Manuel d'utilisation / d'entretien du produit Q153090901 du fabricant HP
Aller à la page of 196
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,.
<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 .
Cont ents Con ten ts 3 Related docume nts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Documents specific to HP Ultrium drive s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4C o n t e n t s Illegal C ommand check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1 Illegal F ield/Request check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cont ents Con ten ts 5 Read-Write Error Recovery mode page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 Disconnect- Reconnect page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6C o n t e n t s Fixed fo rmat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148 Descriptor format 152 Sense data mana geme nt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 .
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.
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.
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 .
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 .
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.
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 ” .
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 .
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 ).
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 .
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 .
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 .
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.
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.
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:.
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.
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.
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 .
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.
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 .
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.
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 o.
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 .
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).
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” .
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 .
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 .
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.
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 ).
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 .
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 .
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 .
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 .
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 .
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 .
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.
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.
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.
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 .
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.
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).
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).
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.
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.
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 .
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.
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.
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.
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.
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 .
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.
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 .
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 .
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 .
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.
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.
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 .
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 .
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 .
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.
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.
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 .
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 .
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 .
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 .
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 da.
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 .
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.
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 .
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 press.
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.
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 .
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.
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.
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.
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 .
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.
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.
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.
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 .
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 .
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 .
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) .
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 (M.
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 .
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.
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 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 ( .
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 .
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 .
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.
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.
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 .
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 acti.
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 .
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).
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.
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.
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 .
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.
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.
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.
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 .
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 .
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.
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 .
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.
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.
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 .
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.
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 .
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.
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 O.
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.
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.
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.
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 (.
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 .
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) .
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 .
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 .
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.
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) .
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.
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.
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.
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.
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 .
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.
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 .
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 .
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.
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 .
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 .
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.
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.
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 .
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 .
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 .
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 .
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.
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.
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 .
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.
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.
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.
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.
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.
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 .
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 .
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.
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.
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 .
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.
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 .
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).
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.
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 .
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 .
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.
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.
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.
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 .
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 .
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 .
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.
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 .
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.
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) .
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.
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.
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 .
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 .
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 .
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.
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 .
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.
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 .
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 .
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.
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.
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 algo.
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 14.
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, fib.
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 S.
Index 196.
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté HP Q153090901 c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du HP Q153090901 - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation HP Q153090901, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le HP Q153090901 va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le HP Q153090901, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du HP Q153090901.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le HP Q153090901. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei HP Q153090901 ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
