HP Q153090901 Bedienungsanleitung

HP Ultr ium tape dr i v es T ec hni cal r ef er ence man ual G ene r a t i on 3 d r i v e s V olume 3—the S C S I interf ace <Bold Header> P ar t Number: Q15 30–909 01 V olume 3 E d ition 6, December 200 4[...]

<Bold Header> Leg al and n otice in formatio n © Copy righ t 2000–2004—Hewlett-P ack ard De v elopment Compan y , L.P . The infor ma ti on contained in this document is subject to change without noti ce . Hewlet t-P ackard makes no wa rr ant y of any kind w ith rega r d to t his mat erial, incl uding, bu t not limi ted to, the im plied w[...]

Cont ents Con ten ts 3 Related docume nts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Documents specific to HP Ultrium drive s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Documentati on map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [...]

4C o n t e n t s Illegal C ommand check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1 Illegal F ield/Request check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Media Acce ss check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [...]

Cont ents Con ten ts 5 Read-Write Error Recovery mode page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 Disconnect- Reconnect page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 SCSI drive s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

6C o n t e n t s Fixed fo rmat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148 Descriptor format 152 Sense data mana geme nt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154 Current se nse . . . . . . . . . . . . . . . . . . . . . . . . . . [...]

Related docume nts 7 R elated doc ume n ts Thi s is one of six vo lumes that doc ument HP Ultr ium dri ves . T his volume pr ov ides bac kg round inf ormation for dr iv er and appli cation de velo pers . The fo llo wing doc uments pr o v ide additional inf ormati on: Doc u ments s pec ifi c to H P Ultr ium dr i ves • Hardw are Integration Guide ,[...]

8 Oper ation Car tri d ges Inte rface Opti mizi ng perf orma nce (SCS I only) 1 HW In tegr atio n: ch. 8n / a 2 SW I n t e g ra t i o n : ch. 4 UNIX configurati on 5 UNIX Confi g SCS I D rive s FC Driv es External dr iv es (SCSI only) 1 HW Integration: ch. 5n / a In L ibrari es 1 HW Integ ration: ch. 1 In Serv ers (S CS I onl y) 1 HW Integration: c[...]

Related docume nts 9 Maint enance and tr ou bleshooting Dealing w ith err or s Ultrium f eature s SCS I D ri ves FC Drives Cleani ng 2 SW I n t e g ra t i o n : ch. 5 2 SW I n t e g ra t i o n : ch. 7 External dr iv es (SCSI only) 1 HW In tegr atio n: ch. 5n / a In L ibrari es 1 HW Inte gr at i on: ch. 1 In Serv ers (S CS I onl y) 1 HW In tegr atio[...]

10 Gener al doc uments an d standar di z ation • Enhanced Small Compute r S ys tem Interface (S CSI - 2) , ANS I X3T9 .2 -199 3 Re v . 10L , av ailable thr ough ANSI • See http: //www .t10. or g/t1 0_m ain .htm f o r AN S I S CS I - 3 and other spec if icati on s Copi es of doc uments of other standards bodi es can be obtained fr om: Soft ware [...]

The SCSI interface Interface Impl ementation 11 1 Inter face I mp lem enta tion HP Ultrium dri ves use SCSI-3 a s the i nterfac e to c onne ct to th e hos t sy st em. This chap ter gives an o vervi ew of ho w the inte r face oper ates. F ul l det a ils of the messages ar e g i ven in Chapter 2 and o f commands in Chapter 3 and Chap ter 4 . T he S C[...]

Interface Implementation 12 • DIS CONNE CT • IDENT IF Y • IGN O RE WIDE RE S I D UE • INI TIA T OR DE TE CTED ERRO R • M ESSAGE P AR I T Y E R R O R • M ESSAGE RE J EC T • NO-OP (no oper ation) • P ARALLEL PR O T OCOL REQUE S T (PP R ) • RE ST ORE PO INTERS • SA V E DAT A PO I NT E R • S YNCHRON OU S D A T A TR AN SFER RE QUE [...]

SCSI features Interface Impl ementation 13 The fo l lo wing additional commands ar e su pp orted fo r CD -ROM mode: F or implem entation details on these c ommands, se e Chapte r 3, “Comman ds—intr oductio n” and Cha pter 4, “Co mmands ” . SC S I f e a t u re s Desi gn app r oac h The fe atures suppo rted by the dr iv e ar e based on stan[...]

Interface Implementation 14 • A UNIT A T TENTION conditi on is set , based on the type of r eset The d r ive will respond to INQU IR Y , TES T UNIT READ Y , REPOR T L UNS and REQUE S T SENSE wi th in 25 0 ms of the r eset line be ing r eleased . The f irst co mmand fr om an y initiato r (other than INQ UIR Y , RE Q UE S T SENSE and REPORT LUNS ) [...]

SCSI features Interface Impl ementation 15 L UN i dentif i cation (par allel SC SI only) Identify messages are u sed to i dentify the LUN being addr essed by the initiato r , and to identify whi ch L U N is r eselecting the initia tor . The old L UN fi eld in the CDB fr om the SC SI- 2 standar ds is obso lete and should not be used (set t o 0 ). Bu[...]

Interface Implementation 16 If Infor mati on Units is enabled (parallel S C SI only), the dri v e will dr op the bus on detecting a CR C er ror dur ing a LQ_IU. If the CR C err or occurs dur ing the Infor mation Units com mand phase or data out phase , the dr iv e will return CHECK COND IT IO N with a CR C er r or . Additio nal se n se is set t o 4[...]

SCSI features Interface Impl ementation 17 Multi-initiator suppor t All dri ves are design to operate w i thin a m u lti-i nitiato r en vironment . The ma x i m u m number of concur r ently connected initiat ors is as f ollow s: • P arallel S CSI dr iv es: up to 15 initi ators • F ibr e Ch anne l dri v es: up to 3 2 initiat or s shar ed a c r o[...]

Interface Implementation 18 Sense Data , U nit Atten tion a nd Def err ed Err ors ar e maintained f or each initiator . M ode P ar amet ers ar e common to all initia tors . The untagged queuing model implemented by the dri ves guar antees that all commands are ex ecuted in str ict or der of re c e i pt . Certain non-media access t ype commands, suc[...]

Fibre Channel op eration Interface Impl ementation 19 • IEEE C o mpany ID (2 4 b i ts) . Ass igned by IEEE to th e co mp any . • V endor Specif ied ID (3 6 bits) . Assigned by the compan y . Addresse s Ea ch Fibr e Channel port also has a P ort Address wh i ch is assigned dur ing loop initiali zati on and/or Fa bri c Login. This is a 2 4 -bit v[...]

Interface Implementation 20 The values of the na mes can be obtained using the Dev ice Identification Vital Pr o duct Infor mation P age ( part of the INQ UIR Y comma nd) . Implica tions for libraries • Normall y a standalone dr iv e wil l operate us ing its ow n ‘hard’ name s. • The dr iv e kno ws it is in a li b r ar y or other ‘ manage[...]

CD- ROM emu latio n Interface Impl ementation 21 Althou gh ther e are no actual Fie l d Replaceable Units on HP Ultr ium dr iv es, the follo wing sub- assemblies can be replac e d at R epair Centr es: CD-R OM emulati on The One B utton Di saster Reco very (OBDR ) functionali ty in H P Ultrium dri ves enables them to emulate CD-ROM de vices in spec [...]

Interface Implementation 22 • A S CS I bus r e set occ ur s f ollo wi ng the r eading o f at leas t 100 bloc ks of CD-R OM data b y a hos t. • The u ser pow er - cyc les the dri ve or r esets it u sing the for ced-eject mec hanism. NO TE : If the dr iv e ex its CD-RO M mode thro ugh either of the f irst tw o of thes e, the t ape will r emain at[...]

Mes sages 23 2M e s s a g e s This ch apter incl udes all SCS I messages , both supported and unsupported. P arts of this chapter come fr om Section 5, Logical Char acter istics, of the S CSI standar ds ( see page 1 1). The message s y stem pr o vi des an initiator and a tar get on the S CS I bus w ith a means of ma naging communicatio n. The av ai[...]

Messages 24 Mes sage In su ppor t Name Code Suppo r t Command Compl et e 00h This mes sage is sent b y the dri ve at the end of the s tatus phase to indicate that a command is complete . Once the mess age is sent , th e dri ve r eleases the bus and goes to Bus F ree . Disc onnect 04 h T h is me s sage is sent b y the dri ve to indi cate that it is [...]

Mes sages 25 Extended M e ssag e support S y nc hr ono us Data T r ansf er R e q ues t Wide D ata T r ans fer Request Name Code Sup port S ynchr onous Data T ran sfer R equest 01h The dri ve c an initiate a S y n c h r onous data tr ansfer negotiati on. If the message is r eceiv ed after selectio n and befo re the command phase , it wi ll then go t[...]

Messages 26 P ar allel Pr otocol Re quest Fi e l d s : St a t u s A Status b yte is sent fr om the dri ve to the host during the S tatus phase at the end of each com mand a s spec if ie d in th e S CSI s pec ifi catio n, unle ss the comman d ha s been c lear ed b y an ABOR T message , b y a BUS DEVICE RE S ET message , or by a har d re set . 7 6 5 [...]

Status Mes sages 27 The St atus b y tes t hat the dri ve r eturns ar e as follo ws: 00h GOOD: T his status indicates that the dri ve has successfull y c o m pleted the command . 02 h CHECK CONDIT I ON: An y err or , ex ception, or abnormal condition that causes sense data to be set r eturns CHECK CONDIT ION. The REQUE S T SENSE command should be se[...]

Messages 28[...]

Summary Co mm ands—int rodu ction 29 3 C ommands—intr oducti on This chapter contains notes r e lati ng to the S CSI co mmands listed in Chapter . Summar y The foll o win g tabl e is a summ ar y of th e SCSI com mand s for se quentia l acc ess devices, s howing the operation code: C omm and deta ils The command desc r ip tions in Chap ter 4 are[...]

Command s—introducti on 30 Pr e -e x ec uti on chec ks NO TE : In compliance w ith the S CSI spec if icatio n, the dr iv e terminate s a co mmand with a CHECK CONDITIO N status and sets the s ense k ey to ILLEG AL R E QUE ST w hen a re served bit , b yte , f ield or c ode is rece iv ed whic h is not z ero . Bef or e ex ecuting a command , the dr [...]

Pre-execution checks Co mm ands—int rodu ction 31 r eported. If suc h an er r or ex ists, then the dr iv e reports CHE CK CONDITION . The sense data f or the comman d is se t to D EFERR ED ERROR (whic h was gene rated wh en some pr evi ous command f a iled). No te that if a UNIT A TTENTION condition and a DEFE RRED ERR OR condition bo th ex ist f[...]

Command s—introducti on 32 • a r eser ved f ield • the contr ol fi eld • two or mor e fie lds to logically conf licting v alues If a field has been set to an illegal value: • C HECK CONDITION status i s reported to the host w ith a sense k ey of IL LE G AL REQUE S T and additional s ense of 2 400h “inv alid f ield in CDB” . • The s [...]

Pre-execution checks Co mm ands—int rodu ction 33 Media Inf or mati on c heck During pow er -on a nd f ollowing a S CSI r eset, kno wledge of the wher e abou ts o f the cartr idge is unav ailable . It is not possible to e xec ute commands which as sume that this know ledge is av ailable un til the dri ve h as rec ov er ed fr om t he po wer -on o [...]

Command s—introducti on 34 P a ra m e t e r Li s t c h e c k Fo r LO G S E L E C T , MODE S E LECT a nd so me d iagnost ic com man ds, th e asso c iat ed d ata sent to the dri ve is in the form of par a meter lists. These are descr ib ed under the comm and names in the next chapt er . Checks ar e perfo r m ed to test the f ollo wing: • F i xed [...]

Command descri ptor block Co mm ands—int rodu ction 35 C ommand d esc r ipto r bloc k A SCS I command descr iptor block (CDB) is a sequence of 6 , 10, 12 or 16 b ytes sent b y a host to a SC SI target w ith the bus in command phase . The CDB tells the dri ve what action should be pe r for me d. Th e fi n al by te is k n own as th e Control byt e [...]

Command s—introducti on 36[...]

Co mm ands 37 4C o m m a n d s This chap ter descr ibes a ll S CSI command s. P arts of the chapter ar e b ased on sectio n s of the S CSI sp ecificat ion ( see page 11 ). F or general notes on the comm and descr iptions, see Chapte r 3 .[...]

Comm ands 38 ER A SE 19h The ERA SE command is used to er ase data on tape fr om the cu rr ent logical position . The Long bit is used to dec ide whether the ‘ old’ data is ph ysi cally ov erwritten or not . E RA SE comm ands (sh ort or long) to a dri ve containing a WORM cartr idge will not o verwr ite or eras e u s er dat a on tape . Pr e -e [...]

INQUIRY 12h Co mm ands 39 INQUIR Y 12h I NQUIR Y tells the dr iv e to re turn i nf ormati on about the basi c opera ting pa r ameter s to the hos t. Th es e par amet er s cann ot be c hang ed . Th e dr iv e r etur ns In q uiry data t o t he ho st in a data -in phase . NO TE : T h is command is imm u ne fr om most of the pr e-ex ecu ti o n c hecks t[...]

Comm ands 40 INQUIR Y data pages R eturned data: I NQUIR Y retur ns its standar d data if the EVPD bit is z er o , or r eturns a page of data as specif i ed by the P age Code f ield when EVPD is one . Standard Inquiry Data for mat (LUN0) This is the data r etur ned by the dr iv e in r esponse to an Inquiry command with its EVP D bit s et to z er o [...]

INQUIRY 12h Co mm ands 41 The St anda r d In q u iry Data is based on the S C S I 3 standar d for S tandard Inquiry Data. F o r th e L U N to which the drive is atta ched, the P er i ph er a l Qu ali fier field i s set to 00 0b, the P er i pher al D e vi c e T ype fi eld is set t o 0 1h , the R emov able Med ium (RMB) flag is set to 1 and the De v [...]

Comm ands 42 NACA 0 The Norm al A CA flag is 0, indicating that it is not supported . HiSu p 0 T he Hi erar chical Support flag is 0, i ndicating that the hier arc hic al addres si ng model is not supported. Respon se Data F ormat 2 The Inquiry D ata f ormat complies w ith the SCS I-3 standard . Additi onal L engt h The length in by tes of the leng[...]

INQUIRY 12h Co mm ands 43 V endor Spec i f ic data ma y be sent after t he Pr oduct R ev ision Le vel . Produc t Revisio n L evel A v endor-spec ific str ing o f f our AS CII charac ters: “ CNNV ”: • C is the codename ( G for a Ge n 3 SCSI dr ive, L for G en 3 F C d rive) • NN ar e t w o digits that indic a te the build of the var iant. •[...]

Comm ands 44 V ital Pr oduc t D ata pages The fo l lo wing tab l es descr i be the vital pr oduct data pages. Th ese pages are r eturned by the INQU IR Y command when the EVPD b it is set and the appr opri ate P age Code is set in the Command Descr iptor Block . T hey contain v endor -spec ific pr oduct info rmation . Suppor ted V ital Pr o duct D [...]

INQUIRY 12h Co mm ands 45 Unit S er ial Number page The Unit Seri al Number page contain s a single value which is a 10 -b yte ASCII string . T he str ing, with the V endor Identif ication a nd Pr oduct Identif icati on f ields in the standar d Inquir y dat a, un iquely iden tifies the d riv e. De v ice Identif icat ion page The De vice Identifi ca[...]

Comm ands 46 Def in ed identif iers The f ollo wing identif ie rs will be r eturned in the gi ven or der . What P ort Name is retur ned depends on whic h port the Inquiry is sent to . Logical Unit Identifier Po r t N a m e ( F C o n l y ) PIV 1 The Pr otocol Identifi er field is v alid. Th i s is se t f or an Assoc iation value of 1. Associatio n 0[...]

INQUIRY 12h Co mm ands 47 Po r t I d e n t i f i e r ( F C o n l y ) The P ort Identifi er w ill be set t o 1 if the addr essed port is port A, and s et t o 2 if the addr essed port is P ort B. Ta r g e t N a m e Ta r g e t N a m e 7 6 5 4 3 2 1 0 0 Protocol Identifier (0) Code Set (1) 1 P I V (1) Rsv d (0) Assoc iati o n (1) Iden tifi e r T ype ( [...]

Comm ands 48 Extended INQUIR Y Data VP D page This page pr ov ides an applicati o n client with a means of obtaining infor mation about the dr iv e. Sequential Ac c ess De vi ce C apabilities page This page pr ov ides the applicati o n clie nt with a mean s of det ermining w h i ch featur es ar e supported b y the D e vice S erver . 7 6 5 4 3 2 1 0[...]

INQUIRY 12h Co mm ands 49 Dr iv e Component R ev ision Le vels pages The Driv e Compon ent Re vi sion Levels pa ges co ntain d etails of the revisions of each of the m ajor sub a ss embli e s o f the dr i v e. F or an y gi v en pr oduct , if the s e pa g e s ar e the same the n t h e dr i v e has been built with th e s ame com p o nents an d w ith [...]

Comm ands 50 LO A D / U N LOA D 1 B h The LOA D / UNL O AD c ommand allo ws the host to specify that a ta pe cartr idge pres ent in the dr iv e is either made r eady for data tr ansfer (“loaded”) or disabled f or data transfer (if Pr ev ent Media R emo val is s et). It can also ca use t he cartr idge t o be e ject ed fr om the d ri v e (“ unl[...]

LOAD/UNLOAD 1Bh Co mm ands 51 Load/ Unlo ad sp ecif ic stat us: F ollowing a succ essful LOA D command , CHE CK C ONDIT ION is posted to all initiators o ther than the initiato r of the LOA D c omma nd. The sen se ke y is set to UNIT A T TENTION , w i th additi onal sense of 2 800h (not r eady to r eady tr ansiti on). Ther e is an e x cepti on to t[...]

Comm ands 52 4. G OOD s tatus is r epor ted if the tape unloaded su ccessfull y . Otherwise , anot her unload oper ation is initiat ed on behalf of the host that issued the u n load reque st . F ollow ing an unload, an y medi a access commands will be re jected b y the Med ia A cc ess c heck. • If an unload r equest is r e ce iv ed while the tape[...]

LOCATE 2Bh Co mm ands 53 LO C A T E 2 B h The LO C AT E co mma nd moves th e curr e nt lo gical p osi tion to the p osi tion sp ecified by th e command. T he ne w position is spec ifi ed by the off set fr om start of the media in terms o f blocks . The f irst block (that is , BO T) i s bloc k add r ess 0. Any unwr i tten data is wr it ten to tap e [...]

Comm ands 54 Locate specific status: CP Chang e P a rt ition. This f ield is not support e d and should be set to z er o. Immed 0 The dr ive o nly reports status after the Locate command has completed . 1 The dr i ve r eports status w hen it starts the command and contin ues with the positioning in the back gro u nd . BA M 0 This fi eld is not supp[...]

LOG SELECT 4Ch Co mm ands 55 LO G S E L E C T 4 C h The Log Select com mand cau ses log data on the dr ive t o be r eset to its default v alue or t o be set t o an initiator spec ifi c v alue. Pr e -e xec uti on chec ks: Co mma nd de s c r ipto r b loc k: CDB f ields: The follo w ing ar e v a lid combinations of values for the PCR (P ar am eter Cod[...]

Comm ands 56 PC The Pa g e C o n t r o l field de fines the type of paramete r values to be selected: 00b or 10b N o o p era t io n i s pe r fo rm ed . Th e P ara m et er Li st Le ng t h m u st be zero. If i t i s n ot, ch eck cond ition i n va lid field in CDB is set. 01b T he dri ve w ill clear logs as specif ied by the par ameter dat a. 11b T he[...]

LOG SENSE 4Dh Co mm ands 57 LO G S E N S E 4 D h LO G S E N S E allo w s the h ost t o r ead the d ri v e ’s log s. A si ngle l og is r etur n ed wit h eac h in vo catio n of LO G S E N S E . Pr e -e xec uti on chec ks: The P age Code must matc h one of the su pp ort e d log page codes. If it does not , then CHECK CONDITION status is r eported. S[...]

Comm ands 58 L og page f or mat All log pages e xcept P age 0 consist of a page code header follo wed b y a number of par ameters. The page header has the follo wing for mat: The P age Code specif ies whi c h L og page is being r eturned . T he P age Length indicates the nu mber of additional b ytes in the parameter s. Fo r t h e Log S elect comman[...]

LOG SENSE 4Dh Co mm ands 59 Su pp or ted L og P ages page This S CSI log may be r ecov er ed using a Lo g Sens e com mand wit h the PC f ield set to an ything and the P age Code f i eld set to 00h. T he page lists the page co des of other logs su pported b y the dr i ve . It ca n neithe r be r eset nor wr itten. The page h as the follo wing form at[...]

Comm ands 60 W r ite Err or C ounte rs log page The W rite Err or Cou n ter s log is page 0 2h . T he P age Len gth is 38h. Ther e are sev en p ar ameter s, 0 thr o ugh 6. All fi eld s are f our b y tes long . All these counters ar e updated when the data set is phy sically wr it ten. T hey r elate to the cur rent tape and ar e clear ed when the ta[...]

LOG SENSE 4Dh Co mm ands 61 Sequentia l A ccess Dev ice log page The Sequential Access De v ice L og page is page 0Ch . T he P age Length is 40h . F i v e par ameters ar e supported , all eigh t bytes lo n g . With the e xce ption of 0100h (cleaning r equired), the y are updated when a data set is logically wr itten and clea r ed at the start of ta[...]

Comm ands 62 T emper atur e log page The T emperatur e Log page is page 0D h . The follo wing par ameters ar e supported: D TD Statu s log page The Data T ransf er D e vice (D TD) Statu s L o g page is page 11h. The f ollowing par ameters ar e supported: Pa r m . Desc riptio n 0h T h e c urr ent temper atur e of the dri ve in ºC (b inar y v alue) [...]

LOG SENSE 4Dh Co mm ands 63 Ve r y H i g h F r e q u e n c y D a t a ( V H F ) 7 6 5 4 3 2 1 0 0 (M S B) P arameter Code (0000h) 1 (LSB) 2 DU (0) DS (1) T SD (0) ET C (0) TM C (0) LBIN (1) LP (1) 3 P aramete r Length ( 4h) 4 Rs vd (0) HIU MA cc Cmp r W rtP CRqst CRqr d DInit 5 InXtm Rsvd (0) RA A MPrsnt Rsvd (0) MStd MThr d D Acc 6 T ape Moti o n S[...]

Comm ands 64 V er y Hi gh F r equen cy P olling Del ay The VHF P olling Dela y is 16 milliseconds. D TD Pr imary P ort St atus P aral l el SCSI RRqst R ecov er y R e que st ed. Set to 1 as long as a r ecov er y proc edu r e is available . In these circ umsta nces, InXtn mus t be 0. IntfC Interface C hanged . If set , the interfac e status has c han[...]

LOG SENSE 4Dh Co mm ands 65 Fibr e Chann el Po r t 0 Po r t 1 T apeAler t log page The T apeAlert log page is page 2 Eh. Ther e a r e 64 p ar am eter s numb er ed fr om 1 thro ugh 64. Only par a mete rs 1 thr ough 1 8 , 20 throu gh 2 3, 29 thr ough 3 9 a nd 5 5 hav e def in iti ons for ta pe dri ves witho ut attached loaders. T he rem a ining par a[...]

Comm ands 66 co n dit i on a n d b y a Log Sele ct command. Specif i c fl ags ma y be clear e d when corr ecti v e acti on has r emov e d the condition that cau sed the flag t o be set . The support e d par am et ers are as f ollow s: Pa r a m e t e r Desc riptio n Ty p e 1 Rea d Warn in g Wa r n i n g 2 W rit e W arn ing Wa r n i n g 3 Ha rd E rro[...]

LOG SENSE 4Dh Co mm ands 67 T ape Usage log page The T ap e U sage log page code is 30h. Ther e ar e nine pa r ameters. T hese ar e all r ead directly fr om the L T O-CM T ape Usage Log. This data r elates to the cur rent tape and can be ne it her r eset nor wr i tten . 36 Dr iv e T emper atu r e Wa r n i n g 37 Driv e V olt age Wa r n i n g 38 Pre[...]

Comm ands 68 T ape Capac it y log page The T ape Capacity log page code is 31h. The P age Length is 20h. T h er e are f our parameter s, 1 thr ough 4. P aramet ers 2 and 4 ar e not supported and ar e r etur n ed as z er o . All par ameters a r e 4 b yte s lon g . All paramet e r s are in megab ytes (1, 048,5 7 6 b yt e s) and assume no com pr essio[...]

LOG SENSE 4Dh Co mm ands 69 P erf ormance Data log page The P erf or m ance Data log page is 34h. This log is inte nde d to r eport data of int er est to a user/ applicati on on how effi cientl y the d r iv e is being used. The P a r ameter C ontr ol B yte is 60h for all the par ameter s. All the parameter s r elate to the cu rr ent tape. T hey ar [...]

Comm ands 70 De v ice S tatus log page The De vice S tatus log page is 3Eh, w ith a page length o f 28h. P CB = P ar ameter Con t r ol B yte. Dev ice Status Bits The parameter ha s the follo wing fo rmat: Pa r a m e t e r Desc riptio n Length Upda ted PCB 0 De v ice T ype 4 Obso lete. Se t to all z eros . 40h 1 Dev ice Statu s B its 4 Used to pro v[...]

MODE SELECT 15h/55h Co mm ands 71 M ODE SELE CT 15h/5 5h M ODE SELE CT is used to send conf i gur ation data to the dr i v e . Both 6 -byt e and 10 -b yte v er sions of the comma n d ar e supported. The Mode Sele ct par am et er list is tr ansfer r ed fr om the host to the dr i ve during the data-ou t phase . It contains z er o or mor e bytes o f i[...]

Comm ands 72 10 -b yte version CDB f ields: Specific s tatus : F ollow ing a succ es sful Mode Select command, Unit Attention statu s is posted to a ll initiato r s other than the initiator o f the Mode Selec t command . The sense k e y is set to UN IT A TTENT IO N . A dditional sense is set to 2A01h (mode p ar ameters changed) . Mode pa r ameter p[...]

MODE SELECT 15h/55h Co mm ands 73 Mode pa ge r epr es ent ati on Certain con venti ons a r e used in the follow ing M ode P arameter pages in or der to descr ibe the natur e o f th e p ar amete r s. Mo st par amet e r s ar e giv e n b y na me , f o ll o w ed b y a n umb er in br ack e ts . The br ack ets have the f o llo wing mean ings: Mod e da ta[...]

Comm ands 74 • 18h (FC dr iv es o nly) 18h (S CSI dr i ve s onl y) “SC SI L UN Contr ol mode page” on page 84 • 19h (FC dr iv es o nly) 19h (SC SI dri v es on ly) “S CSI P ort Contr ol Mode page ” on page 8 7 • 1Ch “Inf ormatio n E xcepti ons mode page ” on page 91 • 3Ch “Dev ice T ime M ode P age” on page 9 2 • 3Fh OBD R [...]

MODE SELECT 15h/55h Co mm ands 75 Header fields Mod e D ata Len gth MODE SELECT : Mode Data L ength field mu s t b e z e r o . MODE SENSE: Mode D ata L ength field is set to the number of b ytes of data av ailable to r eturn e xc luding itself (in other wo r ds , the number of actual b ytes av ailable is mode data length + 1 f or 6 - b yte MO DE S [...]

Comm ands 76 Mode blo c k descr iptor The fo rmat of the Mode P ar ameter block desc ripto r is as f ollows : Mod e P arame ter block de sc rip tor fields: Re a d -W ri t e E rro r Re c ove r y m o d e p a g e The R ead- W rite Er ror R ecov er y mode page has the follo wing f ormat: Re a d-W ri t e Er ro r Re cove r y p a g e fi e l ds : 7 6 5 4 3[...]

MODE SELECT 15h/55h Co mm ands 77 PER P ost Er ror . Althoug h this bit is c hangeable , the dri ve’s inter nal beha vior al way s corr esponds to P ER =0. 0 The dri ve d oes no t report CHE CK C ONDIT ION fo r rec ove red e rror s. Th e D T E bit must al so be z ero. 1T h e d r i v e r e p o r t s CHECK C ONDIT ION fo r re c overe d e rro rs. DT[...]

Comm ands 78 Di scon nect - R e con ne ct p age SC S I d riv e s Th e Discon nec t-R econnect page h as the f oll ow ing f or mat f or S CSI dr iv es: Disco nnect-Reconnec t page f ields: NO TE : If the hos t does not gr ant d isco nnect pri vilege in its IDENT IFY m essage these par amet er s be come meaningless . The dri ve w i ll s ta y connecte[...]

MODE SELECT 15h/55h Co mm ands 79 Co n t rol m o d e pa g e The Contr ol Mo de page is defined as f ollows: C ontr ol mode page fi elds: Da ta Compr ession Ch ar acter istic s pag e The Data Com pressi on Chara cteristi c s Mode page is defined as f ollow s : 7 6 5 4 3 2 1 0 0 PS (0) Rsvd (0 ) P age Code {0Ah} 1 Pa g e L e n g t h { 0 A h } 2 T S T[...]

Comm ands 80 Data C ompr ess ion Char act eri stics mode page f ields: DCE Data Compr e ssion Enable. T h is b it contr ols whethe r the dr iv e uses com pres sion w hen w r iting. T h e v alue has no meaning when r eadi ng , that i s , if the tape c ontains c om pre ss ed d a ta, d e co mp re ss io n wi l l o c cu r re g ard l es s o f th e se t t[...]

MODE SELECT 15h/55h Co mm ands 81 De v i ce C onf igur ation page The dri ve supports the Dev ice Configur ation page, which has the f o llo wing format: Pr e -e xec uti on chec ks: The onl y check made when this page is sent in Mode Select data is P aramet er List . Chang eable parameters: 7 6 5 4 3 2 1 0 0 P S (0) R svd (0 ) P age Co de {10h} 1 A[...]

Comm ands 82 Unchan geable parameters: WTR E WORM T amper Read Ena b le . Contr ols the beha vio r o f th e dr iv e when r eading WO RM media if it appears that the integrity of the tape has been compromised by tamper ing. WTRE has no effect on r eads of normal (non-W ORM) media. 0 De fa ult : If no tamper ing h a s been de tected, data is r eturne[...]

MODE SELECT 15h/55h Co mm ands 83 Medium P artitions mode page The Medium P artitions mode page has t h e f ollow ing for mat . Note that none of the f ields ar e changeable . The P artition Siz e will be patroni z e d . None of the fields in this mode page a r e changeable. EEG 0 The Enable E OD Genera ti on flag should be set since E OD gener ati[...]

Comm ands 84 F ibr e Channel L ogi cal Unit Con tr ol mode page This page is supported f o r F ibr e Channel only: S CS I L UN Contr ol mo de page NO TE : T his page is supported f or S CS I dri v es only , fr om Gen 3 on war ds. PSU M 3 P artition Si z e Unit of Measur e: The value of 11b indicates that the units of measur e for the P artition Si [...]

MODE SELECT 15h/55h Co mm ands 85 F ibr e Channel P or t C ontr ol mode page NO TE : T his page is supported fo r F ibre Channel only . The F ibre Channel P ort Contr ol page a llo ws you to set the initializ ation and addressing behav ior of the F ibre Channel interface . 7 6 5 4 3 2 1 0 0 P S (0) Rsvd (0 ) P age C o de {19h} 1 Pa g e L e n g t h [...]

Comm ands 86 RHA R e quir e Ha r d Address . If the dr iv e is not attached t o a n arb itrated loop , the RHA bit is ignored. 0 The dri ve fo llows the normal initiali z ation proce dur e, inc lu ding the possibi li ty of obtaining a soft addres s du r ing the loop initiali z a ti on pr ocess. 1 When attached to an arbitr ate d loop, the dri v e w[...]

MODE SELECT 15h/55h Co mm ands 87 SC SI P o r t C o n t ro l M o d e p a g e NO TE : T his page is supported f or S CS I dri v es only , fr om Gen 3 on war ds. Normal page If the P ort Contr ol mode page (19h) is r e qu ested via the MODE SENSE c ommand w ith the Sub- P age co de set t o z er o, the f ollowing data w ill be r eturned: Sub-pages The[...]

Comm ands 88 Sub-pa ge 01h—Mar gin Con tr ol None of the fi elds ar e supported on this p age , so they should all be z ero . Sub-pa ge 0 2h—Sa ved T r aining C onf igur ati on V alues 7 6 5 4 3 2 1 0 0 Res e r ved (0 ) 1 Dri ver Strength (0) Reserved (0) 2 Dr iver A symmetry (0) Dr ive Pr ecomp ensation (1h) 3 Dri ver Slew Rate (0) Reserved (0[...]

MODE SELECT 15h/55h Co mm ands 89 All the fi elds on this page are v e ndor - spec ifi c. N one ar e su pported, so the y should al l be z er o. Sub-pa ge 03h —Negotiate d Settings 96 AT N Va l u e ( 0 ) 99 100 C/D V alue (0) 10 3 104 I/O V alue (0 ) 10 7 108 MSG V alue (0 ) 111 112 Re s er ve d ( 0) 22 7 7 6 5 4 3 2 1 0 0 Tr a n s f e r Pe r io [...]

Comm ands 90 Sub-pa ge 04h—R eport T r ansfer Capab ilities Tra n s c e iv e r M o d e The c urr ent bus mode: Code Bus M od e 00b Unknow n 01b SE 10b LV D 11b HVD (Note that this will ne ver be reported since the dri ve w ill not oper ate on an HVD bus) Sent PCOMP_EN The v alue of the PC OMP_EN bit sent . This w ill be set if PC OMP_EN has been [...]

MODE SELECT 15h/55h Co mm ands 91 Inf orm ati on Ex cepti ons mode page The Infor mation Ex c epti o ns Mode page is used to contro l e xcepti on reporting thr ough the “T apeAlert log p age ” on p age 6 5 : 7 6 5 4 3 2 1 0 0 PS (0) Rsvd (0) P a ge Code {1Ch} 1 Pa g e L e n g t h { 0 A h ) 2 P erf (0) Rese r v ed (0) DExcp t T est Rs v d (0 ) L[...]

Comm ands 92 Note that if an attempt is made t o set or c lear a f l ag that is not sup p orted b y the d ri ve , CHE CK CONDITION wi ll be r epo rted w ith a sens e k ey o f ILLEG AL REQUE S T a nd additi onal sense of 2 600h (inv alid f ield in par ameter list) . De v i ce T ime mode page The De vice T ime M ode page consists of the f ollow ing p[...]

MODE SELECT 15h/55h Co mm ands 93 P ow e r-on time desc r iptor W or ld time des cr iptor Libr ar y t ime des c ript o r 7 6 5 4 3 2 1 0 4 Timebase Identifier (00h) 5 Timebase F ield Length (06h) 6 (MSB) Cur rent P ow er - on Count 7 (LSB) 8 (MSB) Po w e r - o n T i m e 11 (LSB) 7 6 5 4 3 2 1 0 12 Timebase Identifier (01h) 13 Timebase F ield Length[...]

Comm ands 94 CD-R OM Emulati on/Disaster R e c o very mode page This page can be u sed ir respecti ve of whether the dr iv e is acting as a tape or a CD dev ice . CD-R OM Em u lati on/Disas ter R eco very mode page fie lds: Current P ower-on Count T he number of t ime s the dri ve ha s been po w er ed on Ign or ed Po w e r - o n T i m e T h e nu mb[...]

MODE SELECT 15h/55h Co mm ands 95 MOD E S ELEC T This f la g ca n b e us ed to sw itch the dr iv e between nor mal operatio n and CD-R O M emu lation mo de: • If this bit is s et to its ex isting v alue , th e re is no c h ange. • If this bit is c hanged from 0 to 1, th e dr iv e w ill en t er CD-emulation mode. It w ill change its Inquiry and [...]

Comm ands 96 M ODE SENS E 1Ah/5A h M ODE SENSE allow s the d r iv e to retur n its curr ent confi g ur ation and report whi ch configur ation par ameters can be changed thr ough MODE SELEC T . The mode sense header , bl ock descr iptor (optional) , and z er o or mor e of the ar e sent t o the hos t. Mode pages c ontain dr iv e c onf igurati on pa r[...]

MODE SENSE 1Ah/5Ah Co mm ands 97 10 -b yte version CDB f ields: 7 6 5 4 3 2 1 0 0 Oper ation Code (5Ah) 1 Res er ved ( 0) D BD Re ser ved ( 0) 2 PC P a ge Co d e 3 Su b P ag e Cod e 4 Re s er v e d ( 0) 6 7 (M S B) Al location L ength 8 (LSB) 9 Contr o l DBD Di sable Block Descr iptors flag 0 Allo ws the dri v e to retur n th e MODE S ELECT block d[...]

Comm ands 98 PE RS I ST E N T R E S E RV E I N 5 E h PER S IS TENT R ES ER VE IN is u sed to o bt ain inf o r mati on abo u t pe rsis ten t r eservat i ons an d r e serv a tio n k e y s th at ar e acti v e wit hin a t a p e dri v e log i cal unit . Pr e -e xec uti on chec ks: Co mma nd de s c r ipto r b loc k: CDB f ields: Illegal F ield R eservati[...]

PERSIST ENT RESERVE IN 5Eh Co mm ands 99 R eturned data for se r v ice ac tions: Read K ey s ser vice action The dri ve w ill r eturn a parameter list containing an 8-b y te header and list of each curr entl y r eg ist ered I_T nex us ’ r eservati o n k ey . Each k e y is 8 byte s long. The f ormat o f the r eturned data is as f ollo ws: Read Res[...]

Comm ands 100 Read Capabilities service ac tion This pr o vides a mechanism for the dr iv e to report whi ch featur es of P ersisten t Reserv ation a r e implemented . The for mat of the data ret u r ne d is as f ollo ws: All the oth er fields ar e f ixed. Ref er to the description of PE RSIST EN T R ESE RVE OU T or the appr opr iate standar ds for[...]

PERSISTE NT RESERVE OUT 5Fh Co mm ands 101 PE RS I ST E N T R E S E RV E O U T 5 F h P ER SIS TENT RESER VE OUT is used to r equest serv ice actions that cr e at e a persis tent r eservati on in a log ical uni t wit hin t he ta pe dr iv e f or the ex clu si ve o r shar ed us e of a pa rtic ular I_ T ne xu s. T he comma nd uses other service actions[...]

Comm ands 102 P a rame ter data Ty p e The c har acter isti cs of the persiste nt r eservati on cur r entl y held. P ersistent r e servation ty pes supported b y the dri ve ar e: 3h 6h 8h Ex clusi ve acce ss Ex clusi ve acce ss, r egistran ts only E xclu s ive a c c es s, a l l reg i st ra nt s Pa r a m e t e r L i s t Length The amount of data (in[...]

PERSISTE NT RESERVE OUT 5Fh Co mm ands 103 This is a summar y of the f ield validity in the pa r ameter data: Ad ditional p arame ter data Fo r t h e P reempt and Pr eempt and A b o rt se r v ice actions , this field cont ains: n Th e re s er va t io n key o f re g i st rat io n s t o be rem ove d or if this f ield also identif ies a persis tent re[...]

Comm ands 104 Fibr e Chann el T r anspo rt ID P arall el SCSI Tr a nsp ort ID 7 6 5 4 3 2 1 0 0 F ormat Code (0 0b) Reserved (0) Pr oto col Identifier (0) 1 Re s er v e d ( 0) 7 8 (M S B) W orld Wide Nam e 15 (LSB) 16 Re s er v e d ( 0) 23 7 6 5 4 3 2 1 0 0 F ormat Code (0 0b) Reserved (0) Protocol Identifier (1h) 1 Re s er v e d ( 0) 2 (M S B) SCS[...]

PREVENT/ALLOW MEDIUM REMOVAL 1 Eh Co mm ands 105 P REVENT/ALL O W MED IUM REM O V AL 1Eh PREVENT / ALL O W MEDIUM REMO V AL te lls the drive to e nable or d isable the r e mo val of the cartr id ge . When ca rtr idge r emov a l is pr ev ented, the fr ont panel eject but ton is completely disabled (though a ‘for ced eject ’ will stil l w ork). A[...]

Comm ands 106 READ 08h READ tr ansfers z er o or mor e data blocks to the hos t st ar ting at the cur re nt logical p ositi on. Pr e -e xec uti on chec ks: If both the SILI and F ix ed bits ar e se t, CHECK COND IT ION statu s is report e d. Sense data is as descr ibed in the Illegal Fi eld Che c ks. The fi eld pointers indicate the F i xed bit fi [...]

READ 0 8 h Co mm ands 107 descr ibed below). The curr ent position is set after the last block that w as r eturned or partially ret u rn e d SILI Suppres s Incorr ect Length Indi cato r 0 The r ead oper ati on is ter m inated w hen the length of a block (on the tape) differ s f r om the T r an sf er Length. T ransfe r Length bytes of data w ill hav[...]

Comm ands 108 Read sp e c i f ic st atus : NO TE : E arl y war ning end of medium inf ormati on is not r eported on r e ads. R esidue i nf ormati on: The V alid bit w il l be set . The infor m ati on bytes w i ll be as follo ws: Event Status Key Notes SILI error CHE CK COND ’N NO SENSE ILI and V alid bits ar e set . T he infor mati o n bytes w il[...]

READ 6 (CD-ROM m ode) 08h Co mm ands 109 READ 6 (CD- R OM mode) 08 h T ransfer Lengt h bloc ks of data ar e tr ansferr e d to the host , starting fr om the cur r ent logical position specif ied by L ogical Block Addr ess. An y spac i ng perfor med to locate to the specif ied block addr ess is perfor m ed with mar k counting disabled. R e q u es ts [...]

Comm ands 110 READ 10 (CD-ROM mode) 28 h T ransfer Lengt h bloc ks of data ar e tr ansferr e d to the host , starting fr om the cur r ent logical position specif ied by L ogical Block Addr ess. An y spac i ng perfor med to locate to the specif ied block addr ess is perfor m ed with mar k counting disabled. Requests falling within t he f irst 250 ki[...]

READ A TTRIBUT E 8Ch Co mm ands 111 READ A TTRIBUTE 8Ch The READ A T TRIBUTE command allo ws an a pplication client t o r ead at tr ibute values to MAM (Medium A u x iliary Me mory ) . It sh ould b e ex ec uted b efo r e sendi ng a WRIT E A T TRIBUTE comma nd. Pr e -e xec uti on chec ks: In or de r to e x ecut e a REA D A TTRIBUTE co mman d , th er[...]

Comm ands 112 R eturned data for se r v ice ac tions: Attribute V alues service action This servi ce reads the v alues of attr ibutes for the spec ifi ed volume and p artiti on, starting at the F ir st Attr ibut e ID . T he att rib ute s ar e re turn ed in asc endin g nume ri cal or der . Th e fo rma t of the r etur ned data is as f o llo ws: The A[...]

READ A TTRIBUT E 8Ch Co mm ands 113 Attribute List service action This se r v ice actio n is used to r etr iev e the identif ier s of all the attr ibutes that ar e supported and e xist . The F irs t Attr ibute ID fie ld in the CDB is igno r ed . The attr ibut e iden tif ier s ar e r etur ned in asce nding numeri cal order . The fo rmat of the r etu[...]

Comm ands 114 V olume List service action The V olume List s ervice acti on is used to r eport the numbe r of v olumes that t h e de vi ce server supports , w h i ch in the case o f Ultrium dr iv es is 1. The V olume Number , P a rtitio n Number and Attr ib ut e fi elds i n the CDB ar e i gnor ed. T he inf or mati on r etur ned is a s fo llow s: Th[...]

READ A TTRIBUT E 8Ch Co mm ands 115 MAM at tr ibute data Attr ibute da ta sent w ith a WRI T E A TTRIB UTE co mm a nd o r re tu rn e d i n res po n se t o a REA D A T TRI BUTE command has the follo wing f ormat: The fo rmat implies not h ing about the ph ysical r epr esentation of the data in the Medium A ux i liar y Me m ory . 7 6 5 4 3 2 1 0 0 (M[...]

Comm ands 116 Attribute ID values Attr ibutes can be Standar d or V endor -Unique . Ther e are thr ee gr oups of attr ibutes: Dev ice, Mediu m and Host attr ib ut es. Eac h gr ou p has a list of a ttr ibu tes , w hic h ch ar ac ter iz e the gr ou p: W RITE A T TRIBUTES c ommands ar e only accepted for Host type attr ibutes (either Standar d or Ve n[...]

READ A TTRIBUT E 8Ch Co mm ands 117 02 2 4 h–03FFh Res er ve d Rem aining capacity in partitio n and Maximum capacit y in partition Nativ e capac ities in MB , assuming no da ta com p ressi on. Ta p e A l e r t f l a g s The b i ts sp ec if y flags th at w ere set dur ing the pre vi ous load. 1 bit per flag (MSB = flag 1, LSB = flag 64) . Loa d c[...]

Comm ands 118 S tan dar d medium t y pe attr ibu tes St andar d host type attribu tes These onl y ex ist if they ar e initializ ed b y an applicati on: ID Attr ibute Size (bytes) Format Desc ription 0400h Medi um manufa ctur er 8 AS CI I The na me of th e manufacturer . 04 01h Medi um ser ial number 8 ASC I I The ser ial number , left -aligned and [...]

READ A TTRIBUT E 8Ch Co mm ands 119 *0809h and 080Ah are opti onal for L T O dri ves becau se they onl y support a single partition. T ext locali zation indentifiers The T ext L ocal i z ation Identif ier def ines the ch aract er se t used fo r attr ibutes w ith a text f ormat: 080 7h Ownin g host textual n ame 80 T ext The host server from which t[...]

Comm ands 120 READ BL OCK LIMI T S 0 5h R EAD BL OCK LIMIT S tells the dri ve to r eturn dat a de fining the maximum bloc k siz e that it can support . Note that this is the maximum support able, not t he fix ed block si ze . Pr e -e xec uti on chec ks: Co mma nd de s c r ipto r b loc k: R ead Block Limits da ta: Illegal F ield R eservatio n Defe r[...]

READ BUFFER 3Ch Co mm ands 121 RE AD B UFFER 3C h R EAD BUFFER r eads data f rom the memory on the dri ve and sends it to the initiator . The v alue of the M ode f ield determines whether only the 4- b yte descr i pt or is returned , only the data is retur ne d , or whether b ot h ar e r etu r n ed. Pr e -e xec uti on chec ks: If any of the follow [...]

Comm ands 122 Memory si z es: 0 2h SC SI burst buffer RAM 4 bytes 10h CM EEP ROM EEPR OM 1 byte 11h Mec hanical EEPR OM EEPR OM 1 byte 12h Head asse mbly EEPRO M EEPR OM 1 byte 13h P CA EEPR OM EEPR OM 1 by te 20h Main bu f f er segment 0 R AM 4 byte s see belo w for details 21h Main bu f f er segment 1 R AM 4 byte s see belo w for details 2 2h Mai[...]

READ BUFFER 3Ch Co mm ands 123 R eturned data: The f ormat o f t h e 4-byte desc ript or for Mode 00000b is a s follo ws: The f ormat o f t h e 4-byte desc ript or for Mode 00011b is a s follo ws: The fo rmat of the 4-byte E cho buffer desc ripto r for Mode 010 11b is as f ollow s: 400000h 40000h Servo Contr oller ASI C FF8000h 7 0 00h Contr oller [...]

Comm ands 124 READ CAP A C I TY (CD-RO M mode ) 25 h R EAD capac ity transf ers R e ad Capac ity data to the host . Pr e -e xec uti on chec ks: If the dri ve is not in CD-ROM mode , the r equ est w ill ret ur n CHECK COND ITION statu s with a sens e k ey Illega l Command. Co mma nd de s c r ipto r b loc k: CDB f ields: R ead C apac ity data The fo [...]

RE AD MEDI A SERIA L NUMBE R ABh Co mm ands 125 RE AD MEDIA SERIAL NUMBER ABh R EAD MEDIA SERIAL NUMBER pr o v i des a meth od f or t he host appli cati on to r ead the seri al number of the cartri dge c urr ently loaded in the d r iv e. Pr e -e xec uti on chec ks: Co mma nd de s c r ipto r b loc k: CDB f ields: If ther e is no c artri dge in the d[...]

Comm ands 126 No barcode stored: Ba r cod e store d: 7 6 5 4 3 2 1 0 0 (M S B) Ser ial Nu mber Length (0Ch) 3 (LSB) 4 (M S B) C artri dge S eri al Numbe r 13 (LSB) 14 (M S B) A SCII NU L char acters (00h) 15 (LSB) Car tridge Se ri al Number The se rial number of 1 0 A SCII c haracte rs stor ed in the L T O-CM Cartridge Manufacture r’s Information[...]

READ PO SITION 34h Co mm ands 127 R E A D POSITI O N 34 h The READ POSITION c om m a nd ret u rn s da ta re pre se nt i ng t he cu rre nt lo g ic a l p o s it io n to th e ho s t . The position is the count o f all marks and blocks between BOM and the cur r ent logical position . The f irst block is bloc k 0. The command causes no tape mo vement . [...]

Comm ands 128 Short F or m Block ID Returned data fields: 7 6 5 4 3 2 1 0 0 BOP EOP L OCU (1) B Y CU (1) Rsvd ( 0 ) L OL U (0) PERR Rs vd (0) 1 Pa r t i t i o n N u m b e r ( 0 ) 2 Re s er v e d ( 0) 3 4 (M S B) F irs t Blo c k Locatio n 7 (LSB) 8 (M S B) Last Block Lo c ation (same as First Block Location) 11 (LSB) 12 Re s er v e d ( 0) 13 (M S B)[...]

READ PO SITION 34h Co mm ands 129 Lo n g B l o ck Form I D Returned data fields: 7 6 5 4 3 2 1 0 0 BOP EOP R eserved (0) MP U L ONU (0) Res erved (0) 1 Re s er v e d ( 0) 3 4 (M S B) Pa r t i t i o n N u m b e r ( 0 ) 7 (LSB) 8 (M S B) Block Number 15 (LSB) 16 (M S B) Fil e N u m be r 23 (LSB) 24 (M S B) Set Number(0) 31 (LSB) MPU Mark P osition Un[...]

Comm ands 130 Extended Bl o ck F orm ID 7 6 5 4 3 2 1 0 0 BOP EOP L OCU (1) B Y CU (1) Rsvd ( 0 ) L OLU (0 ) Re served (0) 1 Pa r t i t i o n N u m b e r ( 0 ) 2 Additi onal L e n gt h (1Ch) 3 4 Re s er v e d ( 0) 5 (M S B) Number of blo cks in buffer (0 ) 7 (LSB) 8 (M S B) F irs t Blo c k Locatio n 15 (LSB) 16 (M S B) Last Block Lo c ation (same a[...]

READ TOC (CD- ROM mo de) 43h Co mm ands 131 READ T OC (CD-R OM mo de) 43 h R EAD T OC transfers the T able of Co nten t s data to the hos t . Pr e -e xec uti on chec ks: If the dri ve is not in CD-ROM mode , the r equ est w ill ret ur n CHECK COND ITION statu s with a sens e k ey Illega l Command. The T rack/Sess ion Number must be s et to 0 or 1. [...]

Comm ands 132 Rea d T O C d a ta The fo l lo wing data is alw ay s retur ned: 7 6 5 4 3 2 1 0 0 (M S B) T OC Data Le ngth (12h) 1 (LSB) 2 Fi r s t Tra c k N u m b e r ( 1 ) 3 Last T rack Num ber ( 1) 4 Re s er v e d ( 0) 5 ADR ( 1) Control (4) 6 Tr a c k N u m b e r ( 1 ) 7 Re s er v e d ( 0) 8 (M S B) L ogica l Blo ck A ddr ess (0000000 0h) 11 (LS[...]

RECEIVE DIAGNO STICS RESULTS 1Ch Co mm ands 133 RE CEIVE DIA GNO S T ICS RE S U L T S 1C h R EC E IV E D IAG N OSTI C RE SU L TS tell s the driv e to return dat a fr om the last d iagn ostic te st requ ested thr ough the SEND DIA GNOS TIC command. If none ha s been sent , the data r ef ers to the po w er -on self -te st. Pr e -e xec uti on chec ks:[...]

Comm ands 134 Data r etur ned P age code 7 0 h — Self -T est (Read/W rite) Pa g e F o r m a t f o r Wr i t e : No parameter s are needed. Sending this page is equiv ale n t to a Send Diagn ostic command w ith both the Self T est a nd Un itO fl bit s set. P a ge form at for Rea d: 7 6 5 4 3 2 1 0 0 Pa g e C o d e ( 7 0 h ) 1 Re s er v e d ( 0) 2 ([...]

RELEASE UNIT 17h /57h Co mm ands 135 RELE A SE UNI T 17h/5 7h R ELEASE UNI T en ables the host to r ele ase an y reserv ation it may have on the d ri ve . R eser ving a dev ice is a w ay of ensur ing ex clusi v e access to t hat dev ice fr om a single initiator f or the per iod of the r eser v ation. T he driv e may be r eser v e d using a RESERVE [...]

Comm ands 136 R elease Unit s p ecif ic s tatus: Statu s is retur ned as follo ws: • If the dri ve is not re ser v ed , GOOD status is reported . • If the dr iv e is re served b y another h ost, GOOD s tatus is r eported. • If the dr iv e is r eserved b y this host f or this host , the res er vation st atus is clear ed. Lon gI D This is alw a[...]

REPO RT DEN SITY S UPPOR T 44 h Co mm ands 137 REP OR T D EN S ITY S UP P OR T 44h The Re p o r t D e n s i t y S up p o r t com mand r eturns det a ils about the ta p e f ormats su pp ort e d b y the dri ve . The data is r eturned as a header and a ser ies of descr iptor blocks . Pr e -e xec uti on chec ks Co mma nd de s cr iptor bloc k CDB f ield[...]

Comm ands 138 Desc rip tor bloc ks The header is follow ed by one or mor e Report Density Support descr iptor blocks w ith the follow ing form at : The values reported for Ultrium 3 for mat tapes ar e as f ollows: 7 6 5 4 3 2 1 0 0 Pr imary Density Code 1 Secondary Dens ity Code 2 WRT OK DUP (0) D EFL T Reser ved ( 0 ) 3 Re s er v e d ( 0) 4 Re s e[...]

REPO RT DEN SITY S UPPOR T 44 h Co mm ands 139 If this command is s ent to the HP Ultr ium 3 dr iv e w ith the Media bit se t to 0, thr ee descr ipt or blocks will be r eturn e d w ith ke y values as f ollow s: Medi a W i d th 12 7 T ape wi dth is 1/2” or 12 .6 5 mm . The v a lue in this fi eld is in tent hs of mi lli mete rs round ed to t he n e[...]

Comm ands 140 REP OR T D E VICE I DENT IFIER A3h Desc ri ption: The REP ORT DEVICE IDENTI F I ER command r eturns the identi f ier of the curr ent de vice to the init iat or . Pr e -e xec uti on chec ks: Co mma nd de s c r ipto r b loc k: CDB f ields: Data r etur ned: The re t urned P a r ameter Data is as f o llo ws: Illegal F ield Rese r vati on [...]

REPOR T LUNS A0 h Co mm ands 141 REP OR T L UNS A0h Desc ri ption: The Repo rt LUNS command allows the host to r etr iev e infor mation about what logi cal units the dri ve supports. T he standar d dri ve only has a single LUN. Pr e -e xec uti on chec ks: Co mma nd de s cr iptor bloc k CDB f ields: Illegal F ield 7 6 5 4 3 2 1 0 0 Operation Code (A[...]

Comm ands 142 Data r etur ned: 7 6 5 4 3 2 1 0 0 (M S B) LU N Li s t L e ng t h ( 0 8 h ) 3 (LSB) 4 (M S B) Rese rv ed (0 ) 7 (LSB) Li st of LUN s 8 (M S B) LU N 0 ( 0 ) 15 (LSB)[...]

REPORT SU PPORTED OPCO DES A0h Co mm ands 143 REP OR T S UP P OR TED OP C OD E S A0h Desc ri ption: The REPORT SUPPO RTED OPCOD ES command r eque sts infor matio n on command s supported b y logical unit that is addressed . Pr e -e xec uti on chec ks: Co mma nd de s c r ipto r b loc k: CDB f ields: Illegal F ield Rese r va ti on D ef err ed Error 7[...]

Comm ands 144 Data r etur ned The r eturned P a r ameter Data contains a 4 -byte header f ol l owed b y one or mo r e command descr iptor s: Ea ch com mand desc ripto r c ontains either a support ed O per ation Code or an Oper ation Code/ Servi ce Actio n combina tion . The f orma t of each desc ripto r i s a s follo ws: 7 6 5 4 3 2 1 0 0 (M S B) C[...]

REPORT SU PPORTED TA SK M ANAGEMENT F UNCTIONS A3h Co mm ands 145 REP OR T S UPP OR TED T A SK MANA G EMENT FUNCT IONS A3h Desc ri ption: The REPORT SUPPO RT E D T ASK M ANAGEME NT FU NC TIONS c ommand r eturns infor mation about which ta sk management f unctions ar e supported b y the log i cal unit that is addr essed. Pr e -e xec uti on chec ks: [...]

Comm ands 146 CTS S 1 T he Clear T ask Se t task mana g ement f uncti on is supp o r te d. LUR S 1 The Logical Un it Reset tas k mana gement funct ion is s u pporte d. QTS 0 The Que ry T ask task ma nagement f unction is no t suppor ted. TRS 0 Th e T arget Reset t ask ma nagement function i s not sup por ted. Wa ke S 0 The W akeup ta sk m anagement[...]

REQUEST SENSE 03h Co mm ands 147 RE QUE S T SENSE 0 3h The REQUE S T S EN SE command tr ansfer s s ense data held within the dr i ve to the host dur ing a data- in phase . The data is valid in the f ollow ing cir cumstances: • Aft er rep o r t in g CHECK CON DITION status to the host . • After a command has terminat ed with an une xpected BUS F[...]

Comm ands 148 R e quest Sen se data Sense data is r e co ve r ed f r om th e dr iv e by means of a REQUE S T SEN SE comma nd foll ow ing the rep o r ti n g o f CHECK CONDIT ION b y the dri ve . Ther e are two f ormats in which the data can be r eturned: F ix e d and Descr iptor . F ixed fo rm at The F ix ed format of t he r eturned data is as follo[...]

REQUEST SENSE 03h Co mm ands 149 71h Indicates that the er ror is de ferr ed . A d eferred error o ccurs w h en t here i s a failure f or an operatio n that has alr eady been terminated w ith a GOOD status, or w hen failure oc curs in “ cleanup ” acti v ity follo wing an operati on that was te rminated by BUS RELEASE . The command for wh ich CH[...]

Comm ands 150 71h Indicates that the er ror is de ferr ed . A def err ed er ror occ urs w hen there is a failure f or an operatio n that has alr eady been terminated w ith a GOOD status, or w hen failure oc curs in “ cleanup ” acti v ity follo wing an operati on that was te rminated by BUS RELEASE . The command for wh ich CHECK COND ITION statu[...]

REQUEST SENSE 03h Co mm ands 151 BPV Bit P ointer V alid 0 The Bit P ointer f ield is in valid . 1 The Bit P ointer f ield is v alid . If the SK S V bi t is s et then the BPV b it m us t be set as w ell . Bit P ointe r Identifies the bit positi on o f the fie ld in err or , whether it is a command desc r iptor or a command parame ter list f ield. W[...]

Comm ands 152 Desc riptor f ormat The Descr iptor f o r mat of the re turned data is a s f ollows: R eturned S ense dat a fi elds: 7 6 5 4 3 2 1 0 0 V al id Response Code 1 Re s er ve d ( 0 ) S e n se Key 2 A dd iti onal Se nse C ode 3 Ad diti onal Sen s e C od e Qual ifi e r 4–6 Re s er ve d ( 0) 7 Addit ional Sense Length ( n –7) 8 (MSB ) Sen[...]

REQUEST SENSE 03h Co mm ands 153 Inf ormati on Sens e data des cr iptor Sen se K e y Spec i fi c Sense d ata d escr ip tor Only one o f these is report ed: Fie ld P ointer or Pr ogr e ss Indi cation . Fie l d P o in te r The Sen se Ke y is set to Ill egal Reques t . Pr ogres s Indication The Sen se Ke y is set to No S ense or Not R eady . 7 6 5 4 3[...]

Comm ands 154 S tream Commands Sense d ata de scr iptor Dr iv e Er r or Cod e Se n se dat a de sc r ipto r (V endor S p ec ifi c) Cleaning Needed Se nse data desc ri ptor (V en dor Spe c i fic) Sense data management The dr iv e maintains thr e e sets o f sense data f or ev er y initiator o n the bus. F or a single host t he follo wing sense data is[...]

REQUEST SENSE 03h Co mm ands 155 • It is c lear ed in r esponse to the ar ri val o f any c ommand other than REQ U E ST SE NSE or INQUIR Y . • It is cle ared foll o wing ex ec utio n of a REQUE S T SENSE co mmand. • If the c urr ent command f ails, s ense is set accor ding to the f ailure and CHE CK COND ITIO N is r epor ted to the host that [...]

Comm ands 156 It is possible for multiple UNIT A T TENTION conditio n s to ar ise (for e xample , after a pow er -on follo wed b y a tape load) , such that the initiat or does not read one condition befor e the next occu rs. In this case a prio riti zing scheme is u sed. If a UNI T A TTENTION condition e xists and a ne w one occ urs, t hen the UNI [...]

REQUEST SENSE 03h Co mm ands 157 r epor ted . When the host r eads sense data with a RE QU E ST SE NSE , it will see an er ror f or the WRI TE w ith resi due infor m ation indi cating data lost f or that wr ite and pr ev iou s wr ites. • If the command is not a w rite command a nd the Def err ed Err or chec k is perf ormed as part of the pr e -ex[...]

Comm ands 158 5h ILLE G A L RE QUE ST T he last comm and sent to the dr ive or the data assoc iat ed with the command vi olated conditions impose d b y the dr i ve on its acceptance . S ee also the Illegal Co m mand , Illegal F ield , F ix ed Bit , Re ser vati on an d P arameter L ist pre -e xec ution ch eck s. 1A00h, 2000h, 2 400 h , 2 50 0 h, 26 [...]

REQUEST SENSE 03h Co mm ands 159 Ad d itional S e nse codes This secti on contains a list of all the additional sense codes that an HP Ul tr ium dr i ve can r e tur n , in numeri ca l or der . The Sense K ey s under whic h each code could appear are also listed . The AS CQ b ytes are pr esent at byt es 1 2 and 13 of the sense data . Code Descr ipti[...]

Comm ands 160 14 03h En d of data not found A r ead-type operation failed becaus e a format vi olation r elated to a missing E OD data set , or ther e was an attemp t to r ead a br a nd ne w tape . 1A 0 0h P arameter list length err or T h e amount of data sent in a Mode Select or Lo g S el e c t command is incorr ect or T h e Mode Header indicates[...]

REQUEST SENSE 03h Co mm ands 161 2A 0 4h Reservations r eleased The or iginal persistent r eservati on has been r eplaced w ith another of a differ ent type or remo ved completely . 2A 05h Registratio n s pre-empted A PERS IS TENT R E SERV E OU T command was e xecut ed and al l re gi st ra ti o ns re move d. 2C 00h Command s equence inv alid T he u[...]

Comm ands 162 3E 0 0 h Logical unit has not s elf -conf igur ed yet The dr iv e has just po we red on and has not completed its self-test sequence , so it cannot process commands. 3F 0 1h F irm war e upgraded The f irm ware in the dri ve has just been changed by a Wri t e Buf fer com mand. 3F 05h D e vice i d enti fier chang ed The D ev ice ID h as[...]

REQUEST SENSE 03h Co mm ands 163 Er r or codes The er r or codes that can be r eported in bytes 16 and 17 ar e listed in Chapter 10 of the Ha rd wa re Integration Guide , V olume 1 of the HP Ultr ium T echnical R efer e nce Manual . 55 0 4 h I n su f fici en t re g i st ra tio n res ou rc es FC inter face only: Ther e is only space f or reque sts f[...]

Comm ands 164 RE SER V E UNIT 16h/5 6h This command enables the host to r eserve the dr ive . R eser v in g a de vice is a wa y of ensuring ex cl usive acc ess to that device fr om a s ingl e in itia tor for t he pe r iod of the reservat ion. Once r eserved, the dri ve will ex ecute com mands r e cei ved fr o m the r eser v in g initiator or fr om [...]

RESERVE UNIT 16h/56h Co mm ands 165 10 -byte 7 6 5 4 3 2 1 0 0 Operation Code (56h) 1 Reserved (0) 3 r d Pt y Reserved (0 ) LongID(0) Rsvd(0) 2 Re s er v e d ( 0) 3 Thi rd -P ar t y Device I D 4 Re s er v e d ( 0) 6 7 (M S B) Pa r a m e t e r L i s t L e n g t h 8 (LSB) 9 Contr o l[...]

Comm ands 166 RE WIND 01h R EWIND causes the dri v e to wr it e all buffer ed logical objects t o tape and then positi ons the tape at BOM (begin ning of media) . Once a r ew ind i s start ed, it will complete ev en if the S CSI oper ation is aborted (fo r e xample , if the host selects and sends a n abo rt message). Pr e -e xec uti on chec ks: Co [...]

SEEK (CD-ROM mode) 2Bh Co mm ands 167 SEEK (CD-ROM mo de) 2Bh S EEK is e x ecuted for 2Bh when the d r iv e is in CD -ROM mod e . When out of CD- ROM, th e LO C AT E command , whic h shar es the opcode , is ex ecut e d . Assumi ng th e pr e-ex ec uti on chec ks ar e pass ed , GOOD status is alw ay s r eported. Pr e -e xec uti on chec ks: Co mma nd [...]

Comm ands 168 SEND DIA GNO S T IC 1Dh S END DIA GNOS TIC tells the dr i v e to perfor m eithe r its standar d self-test , or diagno sti cs specifi ed in the paramete r l ist on itself . The par am eter list is tr ansfer r ed to th e dr ive in a ser ies of data-out phases; each 8-b yte data-out phase spec ifies a diagno stic to be perfor med b y the[...]

SEND DIAGNOSTIC 1Dh Co mm ands 169 Data r equir ed No data is r equired if the standar d self-test is t o be perfor med. Otherwise , a single diagnos tic page must be pr o vided as a par am et er . Specific s tatus Any S en d D ia g no st ic co m ma nd rec eive d wit h a En cl os ure Se r vic es p ag e nu m be r ( 0 1h to 0 F h) wi ll generat e CHE[...]

Comm ands 170 SE T C AP A CI T Y 0Bh This p r ovi des a means of changing the logical length of the c u r ren tly-loaded media . The pr imar y use en visaged is f or testing purposes, altho ugh it may also be used in other cir c umstances wher e a shortened tape may be benef ici al. Note that all data c u r ren tly on the media will be lost f ollow[...]

SET DEVICE IDENTIFIER A4h Co mm ands 171 SE T D EVICE ID ENT I FIER A4h S ET DEVICE IDENTIFIER allow s a initiato r to set the Dev ice ID inf ormatio n to t h at su pplied in the P aramet er List . This inf ormati on can be later r etr iev ed by the REPOR T DEVICE IDENTIFIER com mand. Upon suc cessful comp letion t he command w ill post se nse ke y[...]

Comm ands 172 SP A CE 11h S PA C E pro v i des a var i ety of positio ning functio ns that are deter mined by Code and Count f ields in the Command Descr iptor Block . Both forw ar d ( to war ds EOM) and r ever se (tow ards BO M ) positioning ar e pro vi ded. An y u n wr it te n data in the buffer is f l ushed to ta pe bef ore th e space is started[...]

SPA CE 11 h Co mm ands 173 CDB f ields: Spac e specific status : If the dri ve f a ils to space eithe r f rom a medium err or or fr om some sort of non-f atal dr ive er ro r , CHE CK C ONDIT ION statu s is r eported . The sense k ey w ill be set to MEDIUM ERR OR . Addi tio nal sense depends on the nature of t he err or . The t w o most common addit[...]

Comm ands 174 res po n d wit h GOOD s tatus to a r equest to space to E OD, and with CH ECK C ONDIT ION to an y other fo r war d spac ing r equest . Additio nal sense is s et to 140 3h ( End of da ta not found ). • E arly w arning end of medium infor mation is not reported . • If a space r ecords or space f ilemarks command fails then the s ens[...]

START/STOP ( CD-ROM mode) 1Bh Co mm ands 175 ST A R T / S T O P (C D-ROM mode) 1Bh S TA R T / S T O P is e xec uted for 1Bh when the dr iv e is in CD-ROM mode . When out of CD-ROM mode, the LOA D / U N LO A D command , which shar es the opcode , is ex ecut e d . Assuming that the pre-ex ecution c h ecks ar e passed, GOOD sta tus is alwa ys r eporte[...]

Comm ands 176 TE S T UNI T RE AD Y 00h T EST U N IT R EA D Y checks if the dr ive is r eady f or com mands t h at access the t ape. This is done b y the pr e -ex ecutio n Media Access chec k ; it is not a r equest f or a se l f -test . If the dr iv e has a tape loaded, t he c ommand r eturns a GOOD statu s. Otherwise , CHECK CO NDITION i s r eporte[...]

VERIFY 13h Co mm ands 177 VERIFY 13h V ERIFY v erif ies one or m ore bloc ks be ginning wit h the next bloc k on the tape. T he ve rif icati on i s media ve rif ication onl y . It reads data f rom the ta pe as it w ould for a r ead b ut then immed i ately discards it . No data is transf err ed bet ween the host and dri ve . The com mand is identica[...]

Comm ands 178 WRI TE 0A h Ze ro or mor e bloc k s of data ar e tr a nsf err ed fr om the host to ta pe starting at the c urr ent logical positio n. It is r ecomm ended that the Bu ffer ed M ode f ield of the MODE SELECT P aram eter i s set to eith er 1 or 2 so that Immediate r eporting is enabled; upon a w rite command the dri ve will r eport GOOD [...]

WRI TE 0A h Co mm ands 179 W rite specific stat us: See a ls o the “ Additional Sense codes” on page 15 9 for a v ariety of possible hard er ror s. An attempt to wr ite to a wr ite -pr otected cartridge w ill produce a CHEC K CONDIT ION with a sen se key o f DATA P R OT E C T and additional sense of 2 7 00h (wr ite-pro tected) . An attempt to w[...]

Comm ands 180 WRI TE A T TRIBUTE 8Dh The WRITE A T TRI BU T E command a llo ws an applicatio n cli e n t t o writ e attr ibute values to MAM (Me dium Au x il iary Memory) . Applicatio n clients sho u ld issue READ A TTRIBUTE commands be for e using this command to discov er what support the dev ice server has f or MAM. Pr e -e xec uti on chec ks: F[...]

WRITE ATTRIBUTE 8Dh Co mm ands 181 P arameter list f o rm at : The par ameter list has the follo w i ng f ormat . The attr ibutes should be sent in ascending numer ical or der . F o r details of attr ibute data see “MAM attribu te data” on pag e 115. If the paramete r data cont a ins an attribute w ith an Attr ibute Length of z ero , one of the[...]

Comm ands 182 T he par ameter data attempts to change a r ead- only attribut e , that is, o ne that has the R ead- Only bit (see “MAM attr ibute data ” on page 115) set to one w hen read w ith the READ A T TRIBUTE command . None of the attribut es are c h anged . ILLE G AL REQUEST 2 600 h ( invalid field in par ame ter li s t) The paramet er da[...]

WRITE BUFFER 3Bh Co mm ands 183 WRI TE BUFFER 3Bh W rite Buf fer is used to transfer data into me mory on the d r ive for the purposes of d iagnostics, tests or fir mw ar e upgrade . The data is placed int o one of the dr iv e buff ers depending on th e M ode and Buff er ID f iel ds of the command . CA UTION : Do no t at tem p t to use the bu ffer [...]

Comm ands 184 04h T his mode is used to tr ansfer ne w firm ware t o the dr iv e. T he dri ve r ecei ves Allocation L eng th b y tes of data fro m the hos t . The data is stor ed in the dri ve’s buffer .The location in the buffer at whi c h the data is wr itten is determined b y the f i r mw are . T h e f i rm w a r e image i s di vided into a nu[...]

WRITE BUFFER 3Bh Co mm ands 185 Memory si z es Main buf fer memory: The Ma in Buffer memory is 128 M B. Ar ea s of the Main B uffer memory ar e us ed b y the f irm w ar e . The se shoul d not be w r it t en to an d shou ld no t be expe cted to r e tai n value s that are writte n to th em. Any W rite a nd Read Bu ffer te sts can be perfor me d while[...]

Comm ands 186 WRI TE FI LEMARK S 10h W RITE FILEMARK S causes the sp ecif ied number of f i lemarks to be written begi nning at the c urr ent logical po sition on ta pe. If the Immed bit is se t , GOOD status ma y b e r eported and the marks left in the data buff er . Otherwise , all buffer e d data and mar k s ar e written bef ore status is r epor[...]

Glossary Glossar y 187 Glo ssar y alg orithm ri gor ou s s et of r ules f or a pr ocedur e . In the conte xt o f data compr es sion , the r ules ar e fo r transf orming the w ay data is r epr esented. ANSI Amer ican National St andar ds Institute , whic h sets standar ds for , amo ngst other things , SC SI and the s afety of elec tri c al dev ices [...]

Glossary 188 ECMA Eur opean Comput er Manufactur ers Assoc iati on. T he Eur opean equi valent of ANSI . enhanced commands S CSI commands that are vendor -unique and n ot part of the common S CS I set . EOD End Of Data. An area that si gnifies the end of the v alid data . If ne w data is wr itten o v er a larger quantity of old data , it is possibl[...]

Glossary Glossar y 189 SCSI S m all Com puter S y stem Inte r f ace—a standard co mmand specif icati on and command s et that enables compu ters and per ipherals to c ommunicate w ith each other . H P’s Ultr ium dri v es adher e to the S CSI spec ifi cations (see Chapter 1, “Interface Im plementation ” in V olume 3, The S CS I Interface , o[...]

Glossary 190 Ultr a SC SI supports both SE and L VD interfaces . In nor mal situations , slow er de vi ces can coex ist w ith fa ster dev ices , and narr o w dev ices can be u sed on the same S CSI bu s as w ide dev ices using a suitable adapter . HP’s Gener ation 1 Ultr ium dri v es are Ult ra2 , wi de SC SI-3 compatible de vic es. The y can be [...]

Inde x Index 191 A abort handling 14 Aborted Command 158 additional sense codes 149 , 150 , 15 2 , 159 addressing, fibre channel 18 algorithms 187 comp ress ion 80 decompression 80 ANSI 7 , 187 append error 162 ASC/Q 159 asy nchro nous 187 asynchronous data transfer 11 asy nchron ous tr ansfer s 187 attribute data 115 attributes ID values 116 stand[...]

Index 192 SET DEVICE IDENTIFIER 171 SPACE 172 START/S TOP 21 , 175 supported 12 VERIFY 177 WRITE 178 WRITE ATTRIBUTE 180 WRITE BUFFER 183 WRITE FIL EMARKS 186 compatibility 16 1 comp ress ion 187 algorithm 80 ratio 187 cont rol b yte 35 cont rol f ield 35 Control Mode page 79 current sense 154 cle aring 155 D Data Compression Capable bit 80 Charact[...]

Inde x Index 193 G GOOD st atus 27 group code 35 H HARDWARE ERROR 157 heads, cleaning 151 hold bit 50 hold position 50 , 79 Host 188 I IDENTIFY message, invalid bits 161 identifying LUNs 15 ILI bit 149 , 150 Illegal Command ch e ck 31 Illegal Field check 31 ILLEGAL REQUE S T 158 immediate mode 188 during writing 178 Information Exceptions Mode page[...]

Index 194 Read-Write Error Recovery page 76 SCS I LUN Contro l Mode page 84 SCSI Port Control Mode page 87 monitoring condition 65 , 190 MOVE MEDIUM command 105 multi-initiator support 17 N names, fibre channel 18 Negotiated Settings mode sub- page 89 NO SENS E 157 NOT READY 157 O opcode 35 unre cognize d 160 overlapping commands 162 P paced transf[...]

Inde x Index 195 descriptor format 152 fixed format 148 management 154 sense data des criptors Cleaning Needed 154 Drive Error Code 154 Information 153 Sens e K e y Sp ecific 153 Stream Commands 154 Sense Key Sp ecific sense data descriptor 153 sense ke ys 149 , 150 , 157 specific bytes 149 , 150 sequential access 190 Sequential Access command set [...]

Index 196[...]