HP Lto 5 Manual

							01234567
Reserved(0)3
WORMModeLabelRestrictions(01h)4
WORMModeFilemarkRestrictions(01h)5
Reserved(0)6–31
WORMModeissetto1whenthereisaWORMtapeloadedinthedrive.Default
is0.NotchangeablebyaMODESELECTcommand.
WORMM
Thedeviceserverdoesnotallowsometypesofformatlabelstobe
overwritten.
01hWORMModeLabelRestrictions
Thedeviceserverallowsanynumberoffilemarksimmediatelypreceding
EODtobeoverwrittenexceptthefilemarkclosesttoBOP.
02hWORMModeFileMarkRestrictions
SerialNumberOverridevendor-uniquemodepage
NOTE:Thispageisnotavailableonallvariants.
TheSerialNumberOverridemodepageprovidesameanstooverridethedrive’sserialnumber.
ThepageissupportbytheSSC/RMCDevice(LogicalUnit0),andsoisaccessibleviaACI/ADI
andtheprimaryport.Thisprovidesacommonmethodforchangingthedriveserialnumber.
01234567
PageCode(3Bh)SBF(0)PS(0)0
PageLength(0Eh)1
MSNReserved(0)2
Reserved(0)3–5
SerialNumber(MSB)6
(LSB)15
MODESELECTMODESENSE
ThisisaNO-OP.Thedrive’sserial
numberremainsunchangedandtheSerial
Numberfieldisignored.
Notreported00bMSN
SetstheDriveSerialNumberbacktothe
manufacturer’sdefaultvalue.TheSerial
Numberfieldisignored.
TheSerialNumberfieldcontainstheDrive
SerialNumberbeingusedbythedrive
anditisthemanufacturer’sdefaultvalue.
01b
Sameas00bNotreported10b
TheDriveSerialnumberwillbesettothe
valuesuppliedintheSerialNumberfield.
TheSerialNumberfieldcontainstheDrive
SerialNumberbeingusedbythedrive
anditisnotthedefaultvalue.
11b
AnASCIIserialnumber.MODESELECTdatawillbechecktoensurethatthisfieldcontains
onlyASCIIvaluesintherange20h–7Fh.
SerialNumber
TheModePagepolicyforthispageissharedamongstallinitiatorsonallports,soiftheDrive
SerialnumberismodifiedviaMODESELECT,allinitiators,apartfromtheissueroftheMODE
SELECTcommand,onallportswillreceivedUNITATTENTION—ModeParametersChanged.
MODESELECT15h/55h111 
						

							Similarly,theVPDinquirypages80h(UnitSerialNumber)and83h(DeviceIdentification)supported
bytheSSC/RMCdevice(LUN0)willreturnthesameDriveSerialnumberregardlessofwhich
porttheINQUIRYcommandisissued.
Forexample,iftheDriveSerialnumberismodifiedusinganACIMODESELECTcommand,
subsequentINQUIRYcommandsforpages80hor83hissuedviatheprimaryportorADTport
willreportthesamemodifiedserialnumber.
DeviceTimemodepage
TheDeviceTimemodepageconsistsofthefollowingpageheaderfollowedbythreeTimebase
descriptors:
01234567
PageCode(3Ch)SBF(0)PS(0)0
PageLength(22h)1
PTWTLTReserved(0)2
Reserved(0)3
Power-ontimedescriptor
01234567
TimebaseIdentifier(00h)4
TimebaseFieldLength(06h)5
CurrentPower-onCount(MSB)6
(LSB)7
Power-onTime(MSB)8
(LSB)11
Worldtimedescriptor
01234567
TimebaseIdentifier(01h)12
TimebaseFieldLength(06h)13
NTPUTCReserved(0)14
Reserved(0)15
WorldTime(MSB)16
(LSB)11
Librarytimedescriptor
01234567
TimebaseIdentifier(10h)20
TimebaseFieldLength(06h)21
Reserved(0)22
LibraryTime(hrs)23
112Commands 
						

							01234567
LibraryTime(mins)24
LibraryTime(secs)25
Reserved0)26–27
Cumulativepower-ontimedescriptor
01234567
TimebaseIdentifier(18h)28
TimebaseFieldLength(06h)29
Reserved(0)30–31
CumulativePower-onTime(MSB)32
(LSB)35
Fielddescriptions
MODESELECTMODESENSE
1tosetLibrarytime(ignoredifthetarget
portisnotADT)
Librarytimeisinvalid.0LT
Librarytimeisvalid.1
1tosetworldtimeWorldtimeisinvalid.0WT
Worldtimeisvalid.1
IgnoredPower-ontimeisinvalid.0PT
Power-ontimeisvalid.1
IgnoredThenumberoftimesthedrivehasbeenpowered
on.
CurrentPower-onCount
IgnoredThenumberofsecondssincethedrivehasbeen
poweredon.
Power-onTime
IgnoredifWTis0.
Setto1ifUTCWorldTimeisbeingused.
Thelocaltimezonehasbeenused.0UTC
WorldTimeisUTC.1h
IgnoredifWTis0.
Setto1ifWorldtimeisNTP-synced.
UnsureifNTP-synced.0NTP
WorldTimeissetfromNTPsource.1h
IgnoredifWT=0.Thenumberofsecondsfrom00:00:00on
January1,1970
WorldTime
IgnoredifthetargetportisnotADT.Thetimeinhrs:mins:secssetbytheautomation
controller.
LibraryTime
IgnoredThenumberofsecondssincethedrivewas
poweredonfortheveryfirsttime.
CumulativePower-on
Time
ExtendedResetvendor-uniquemodepage
01234567
PageCode{3Dh}0
PageLength{02h}1
MODESELECT15h/55h113 
						

							01234567
ResetBehaviorReserved(0)2
Reserved(0)3
ControlsthebehaviorofthedrivewhenitdetectsatargetorLUNresetmessage.ResetBehavior
Normalresetbehavior(thisisthedefaultvalue).00b
ThedrivewillflushandpositionitselfatBOTupon:
•FCdrives:aLogicalUnitResetorTargetReset.
•SASdrives:aLogicalUnitResettaskmanagementfunction.
01b
Noautomaticflush.Logicalpositionismaintained.10b
Reserved11b
CD-ROMEmulation/DisasterRecoverymodepage
ThispagecanbeusedirrespectiveofwhetherthedriveisactingasatapeoraCDdevice.
01234567
PageCode{3Eh}0
PageLength{02h}1
CDmodeNon-AutoReserved(0)2
Reserved(0)3
CD-ROMEmulation/DisasterRecoverymodepagefields
Whenasystemrestartsafterbootingofftape,thedrivedetectstheSCSIresetsissuedduringreboot
and,inconjunctionwithknowingthatmorethan100blockshavebeenreadinCD-ROMemulation
mode,willrevertbacktobehavingasatapedevice.Thisisthestandardmethodbywhichthedrive
automaticallyrevertstobeingatapedriveinorderthatabackupapplicationcandofilesystemrecovery.
Themethodofreversioninvolvesafirmwarereboot,sothedrivemightbecomeunavailableforafew
secondsduringits“power-on”followingtheSCSIreset.(NotethatnormalSCSIresetresponsedoesnot
involveafirmwarereboot).
Settingthisflagto1inhibitsthisautomaticreturntotapedrivebehavior;thedrivewillremaininCD-ROM
modeirrespectiveofblocksreadandSCSIresets.
Non-Auto
Thedriveisintapedrivemode.0MODESENSECDmode
114Commands 
						

							ThedriveisinCD-ROMemulationmode.1
ThisflagcanbeusedtoswitchthedrivebetweennormaloperationandCD-ROM
emulationmode:
•Ifthisbitissettoitsexistingvalue,thereisnochange.
•Ifthisbitischangedfrom0to1,thedrivewillenterCD-emulationmode.Itwill
changeitsInquiryandModedataappropriatelyandcachethefirst250KBof
theCDimageofftape.CD-ROMsupportcommandswillbeenabled.This
transitionisprimarilypresenttosupportautomatedfunctionaltesting.Ifthebit
ischangedfrom1to0,thedriveleavesCD-ROMemulationmodeandreverts
tonormaltapedrivemode.
•Ifthisbitischangedfrom1to0,thedrivewillleaveCD-emulationmode.The
InquiryandModedatawillreverttothatforatapedriveandCD-ROMcommand
supportwillstop.Thetapewillbereloadedandthelogicalpositionwillbe
BOP.Backupapplicationscanusethistransitiontoswitchtoanormalmode
ofoperationforfilesystemrecoveryofftape.Notethatoperatingsystemsthat
pre-loadclassdriversatbootmightnotbepreparedtotalktotheerstwhile
CD-ROMdrive
MODESELECT
MODESENSE1Ah/5Ah
MODESENSEallowsthedrivetoreturnitscurrentconfigurationandreportwhichconfiguration
parameterscanbechangedthroughMODESELECT.
Themodesenseheader,blockdescriptor(optional),andzeroormoreofthearesenttothehost.
Modepagescontaindriveconfigurationparameters.Someoftheseparametersarefixed,others
areconfigurable(throughtheMODESELECTcommand).ThehostshoulduseMODESENSEto
determinewhichdriveparametersareconfigurableandwhattheircurrentvaluesarebeforeusing
modeselecttoalterthem.
NOTE:See“MODESELECT15h/55h”(page86)forfulldescriptionsoftheModeParameters.
IfaMODESENSEcommandisissuedwhilstanimmediatereportedLoadcommandisexecuting
orclosetocompletingthenthevaluesofsomeparametersinsomemodepageswhichdependon
theresultsoftheloadmaybeundefined.Similarly,thewrite-protectfieldintheModeParameter
Headerwillbeunstableunlessacartridgeispresentandmediumremovalisprevented.
Pre-executionchecks
UnitAttentionDeferredErrorReservationIllegalField
Thepagecodefieldmustcontainavalidmodepagecodeorthevalue0orthevalue3Fh.Ifit
doesnotthenCHECKCONDITIONstatusisreported.SensedatawillbeasdescribedintheIllegal
FieldChecks.
Commanddescriptorblock(6–byteversion)
01234567
OperationCode(1Ah)0
Reserved(0)DBDReserved(0)1
PageCodePC2
SubPageCode3
AllocationLength4
Control5
MODESENSE1Ah/5Ah115 
						

							Commanddescriptorblock(10–byteversion)
01234567
OperationCode(5Ah)0
Reserved(0)DBDReserved(0)1
PageCodePC2
SubPageCode3
Reserved(0)4
6
AllocationLength(MSB)7
(LSB)8
Control9
CDBfields
DisableBlockDescriptorsflagDBD
AllowsthedrivetoreturntheMODESELECTblockdescriptor.0
PreventsthedrivefromreturningtheMODESELECTblockdescriptor.1
PageControl—Indicatesthetypeofpageparametervaluestobereturnedtothehost,asshown
inthefollowingtable:
PC
Description67
ReportCurrentValues:thecurrentvaluesoftheparametersarereturned.00
ReportChangeableValues:thepagereturnedhasitsnon-changeableparameter
fieldsclearedto0.Thefieldsthatarechangeablearesettoall1’s.
10
ReportDefaultValues:thepagereturnedcontainsthepower-on/reset/bus-device-reset
valuesofthemodeparameters.
0/11
Thisallowsthehosttoselectanyspecificpage,orallthepagessupportedbythedrive.PageCode
Thedrivereturnsnomodepages,soonlytheheaderandblockdescriptorare
returned.
0
Thedrivereturnsthatpage.Anymode
pagecode
Thedrivereturnsallmodepages.3Fh
Thesub-pagecodeofthepagecodefordatatobereturned.Iftherearenosub-pages,itshould
besetto0.
SubPageCode
SpecifiesthenumberofbytesthatthehosthasallocatedforreturnedMODESENSEdata.AllocationLength
Nodatatransferwilloccur.Thisisnotconsideredanerror.0
Themaximumnumberofbyteswhichthedriveshouldreturninitsdata-outphase.Either
theentiremodepageorallocationlengthbytesofthepagearereturned,whicheveris
least.
n
PERSISTENTRESERVEIN5Eh
PERSISTENTRESERVEINisusedtoobtaininformationaboutpersistentreservationsandreservation
keysthatareactivewithinatapedrivelogicalunit.
116Commands 
						

							Pre-executionchecks
UnitAttentionDeferredErrorReservationIllegalField
Commanddescriptorblock
01234567
OperationCode(5Eh)0
ServiceActionReserved(0)1
Reserved(0)2
6
AllocationLength(MSB)7
(LSB)8
Control9
CDBfields
Theserviceactiontypesthataresupportedare:ServiceAction
ReturnsallregisteredreservationkeysReadKeys00h
ReturnsinformationonanycurrentpersistentreservationReadReservation01h
ReturnsdetailsofthepersistentreservationfeaturessupportedReportCapabilities02h
Returnsregistrationandreservationstatusforeeachregistered
I_Tnexus.
ReportFullStatus03h
Themaximumamountofdata(inbytes)thatshouldbereturnedtothehost.Thedrivewillreturnall
oftherequestedinformationorallocationlengthbytes,whicheverisleast.
Allocation
Length
PERSISTENTRESERVEINreturneddataforserviceactions
ReadKeysserviceaction
Thedrivewillreturnaparameterlistcontainingan8-byteheaderandlistofthereservationkeys
foreachcurrentlyregisteredI_Tnexus.Eachkeyis8byteslong.Theformatofthereturneddata
isasfollows:
01234567
PRGeneration(MSB)0
(LSB)3
AdditionalLength(n-7)4
7
FirstReservationKey8
15
::
LastReservationKeyn-7
n
PERSISTENTRESERVEIN5Eh117 
						

							A32-bitcounterthatismaintainedbythedriveandincrementedeverytimeaPERSISTENTRESERVE
OUTcommandrequestsaRegister,RegisterandIgnoreExistingKey,Clear,Preempt,orPreempt
andAbortserviceaction.
PRGeneration
ReadReservationserviceaction
Thedrivereturnsaparameterlistcontainingan8-byteheaderandthepersistentreservation,if
any,thatispresentinthedrive.Ifnopersistentreservationispresent,AdditionalLengthis0and
noreservationdataisreturned.Ifapersistentreservationispresent,AdditionalLengthis10hand
16bytesofreservationdataarereturnedasfollows:
01234567
PRGeneration(MSB)0
(LSB)3
AdditionalLength(0or10h)4
7
ReservationKey8
15
Obsolete(0)17
19
Reserved(0)20
TypeScope(0)21
Obsolete(0)22
23
Asfor“ReadKeysserviceaction”(page117).PRGeneration
Thekeyunderwhichthepersistentreservationisheld.ReservationKey
IndicatesLU_SCOPE.0Scope
Thecharacteristicsofthepersistentreservationcurrentlyheld.Persistentreservationtypessupported
bythedriveare:
Type
Exclusiveaccess
Exclusiveaccess,registrantsonly
Exclusiveaccess,allregistrants
3h
6h
8h
SeePERSISTENTRESERVEOUTformoreinformationandalsotheappropriatestandards.
ReportCapabilitiesserviceaction
ThisprovidesamechanismforthedrivetoreportwhichfeaturesofPersistentReservationare
implemented.Theformatofthedatareturnedisasfollows:
01234567
Length(0008h)(MSB)0
(LSB)1
PTPL_C(1)Rsvd(0)ATP_C(0)SIP_C
(1)
CRH
(1)Reserved(0)2
118Commands 
						

							01234567
PTPL_AReserved(0)TMV(1)3
Rsvd(0)WE_EXC(0)Rsvd(0)EX_AC
(1)
Rsvd
(0)
WR_EX_RO
(0)
EX_AC_RO
(1)WR_EX_AR(0)4
EX_AC_AR(1)Reserved(0)5
Reserved(0)6
7
PersistThroughPowerLosshasnotbeenactivated0PTPL_A
ThemostrecentsuccessfullycompletedPERSISTENTRESERVEOUTcommandwithRegister
orRegisterandIgnoreExistingKeyserviceactionhadtheAPTPLbitsettooneinthe
parameterdata.
1
Alltheotherfieldsarefixed.RefertothedescriptionofPERSISTENTRESERVEOUTortheappropriate
standardsformoreinformation.
ReportFullStatusserviceaction
Thisprovidesamechanismforthedrivetoreportadescriptionoftheregistrationandpersistent
reservationstatusofeachcurrentlyregisteredI_Tnexus.Theformatofthedatareturnedisas
follows:
01234567
PRGeneration(MSB)0
(LSB)3
AdditionalLength(n−7)(MSB)4
(LSB)7
::
LastFullStatusDescriptor...
n
TheformatofaFullStatusdescriptorisasfollows:
01234567
ReservationKey(MSB)0
(LSB)7
Reserved(0)8
11
R_HolderALL_TG_PT(0)12
TypeScope(0)13
Reserved(0)14
17
RelativeTargetPortIdentifier18
19
PERSISTENTRESERVEIN5Eh119 
						

							01234567
AdditionalDescriptorLength(n−23)20
23
TransportID24
n
TheI_TnexusisaPersistentReservationholder.1R_Holder
SeedetailsinPERSISTENTRESERVEOUT.TransportID
PERSISTENTRESERVEOUT5Fh
PERSISTENTRESERVEOUTisusedtorequestserviceactionsthatcreateapersistentreservation
inalogicalunitwithinthetapedrivefortheexclusiveorshareduseofaparticularI_Tnexus.The
commandusesotherserviceactionstomanageandremovesuchpersistentreservations.
AnI_TnexusperformingPersistentReserveOutserviceactionsisidentifiedbyareservationkey.
Pre-executionchecks
UnitAttentionDeferredErrorReservationIllegalField
Commanddescriptorblock
01234567
OperationCode(5Fh)0
ServiceActionReserved(0)1
TypeScope2
Reserved(0)3
6
ParameterListLength7
8
Control9
CDBfields
Registersorunregistersareservationkeywiththedeviceserver.Register00bServiceAction
Createsthepersistentreservation.Reserve01b
Releasesthepersistentreservation.Release02b
Clearsallreservationkeysandthepersistentreservation.Clear03h
Pre-emptsthepersistentreservationand/orremoveregistrations.Preempt04h
Pre-emptsthepersistentreservationand/orremoveregistrations,
andabortsalltasksforallpre-emptedI_Tnexuses.
PreemptandAbort05h
Registersorunregistersareservationkeywiththedeviceserver.RegisterandIgnore
ExistingKey
06h
RegistersareservationkeyforanotherT_Tnexusandmovesthe
persistentreservationtothatI_Tnexus
RegisterandMove07h
120Commands