HP Lto 5 Manual

Standardself-test
IfSelf-Test=1andUntOffl=0,atestisperformedthatdoesnotaffectthecontents
ofthetape.Thistestisamoreextensivesetofthetestscarriedoutatpower-on.
IfUntOffl=1,thetapecontentscanbeoverwrittenandwillbeundefinedafter
thetest.Ausercanre-usethetapeafterthetest.
Withatapeinserted:
Thesameself-testwillbeexecutedregardlessofthesettingofUntOffl.
Theresultsofanyself-test(poweronornot)canbedeterminedbyreadingthe
Self-Testdiagnosticpagebeforeexecutingadiagnostic(whichwilloverwritethe
result)....

NotethattheLTOformatenforcesaminimumtapelength.Avaluethatwouldresultinatape
lengthbelowthisminimumwillbesilentlyroundeduptotheminimumpermittedlength.
ThefollowingtablegivestheminimumacceptableCapacityProportionValuesandtheapproximate
capacitytheywillgive:
Max.capacityResultantapprox.min.capacityMin.capacityproportionvalueCartridge
400GB33GB151AhLTO-3
800GB51GB1055hLTO-4
1500GBTBDGBTBDhLTO-5
NOTE:Capacitiesareapproximateandcanbeaffectedbydefectsthatreducetheactualcapacity...

SETDEVICEIDENTIFIERreturneddata
TheformatoftheDeviceIdentifiersuppliedintheParameterListisasfollows:
01234567
Identifier(MSB)0
(LSB)n
SETIPCONFIGURATIONA4h(1Fh)
TheSETIPCONFIGURATIONcommandrequeststhedeviceservertosettheInternetProtocol
configurationsheldinnon-volatilememory.Thechangewillnottakeeffectuntilthenexthardreset.
Thecommandisaserviceactionqualifierforthevendor-specificserviceactionofthe
MAINTENANCEOUTcommand.
Pre-executionchecks
UnitAttentionDeferredErrorReservationIllegalField...

Pre-executionchecks
UnitAttentionDeferredErrorReservationIllegalField
Commanddescriptorblock
01234567
OperationCode(A4h)0
ServiceAction(1Fh)Reserved(0)1
HPLTOVUMIOpcode(0Ah)2
Reserved(0)3–5
ParameterListLength(MSB)6
(LSB)7
Reserved(0)8–10
Control11
Thismustbe1Fh.ServiceAction
Thismustbe0Ah.HPLTOVUMIOpcode
Thelengthinbytesoftheparameterlisttobetransferred.ParameterListLength
SETSNAPSHOTCOMMANDSparameterdata
Theformatoftheparameterdataisasfollows:
01234567
CommandDescriptorList
CommandDescriptor(first)0...

DatasetIdentifierValidDIV
TheDatasetIdentifierfieldisignoredandanySCSIdataorstatusproduced
fromtheexecutionoftheSCSIcommanddefinedintheCDBfieldisnotrecorded
inanySnapshotlogproducedfromtheSnapshotcommandsetspecifiedby
thiscommand.
0
TheDatasetIdentifierfieldidentifiesanySCSIdataandstatusintheSnapshot
logproducedwhenthecommandspecifiedintheCDBfieldisexecuted.
1
ThenumberofbytesintheSCSIDatafield.SCSIDataLength
Thedatasetidentifierusedtoidentifythesnapshotdataproducedwhenthiscommand
isexecuted....

01234567
ParameterListLength(0008h)(MSB)6
(LSB)7
Reserved(0)8–10
Control11
Thismustbe1Fh.ServiceAction
Thismustbe0Bh.HPLTOVUMIOpcode
Thelengthinbytesoftheparameterlisttobetransferred.ParameterListLength
SETSNAPSHOTCONFIGURATIONparameterdata
Theformatoftheparameterdataisasfollows:
01234567
SOCCSOUReserved(0)MMLL0
Reserved(0)1–2
MaxLogLength(MSB)3
(LSB)5
Reserved(0)6–7
ModifyMaximumLogLengthMMLL
Thecurrentmaximumloglengthispreserved.TheMaximumLogLengthfieldisignored.00b
Reserved01b...

SETEnhancedSNAPSHOTCONFIGURATIONA4h(1Fh)
TheSETEnhancedSNAPSHOTCONFIGURATIONcommandisusedto:
•configuretheeventsthattriggerthecreationofSnapshotlogs
•savetracestoflash
•setthemaximumsizeofSnapshotlogscreated
•clearallSnapshotlogsstoredinthedrive
ThiscommandissupportedinLTO-5productsonwards.Itspecifiestriggerconditionsforcreating
SnapshotlogsandSaveTraceToFlash(STTF)logs,whichareSnapshotlogsstoredinnon-volatile
flashmemory.However,thetapedrivewillnotcreateaSnapshotlogwhenatriggercondition...

01234567
AdditionalSenseCode8
AdditionalSenseCodeQualifier9
DriveErrorCode10
11
ModifyMaximumLogLength.TogetherwiththeMaxLogLengthfield,thismodifiesthemaximum
loglengthasfollows:
MMLL
Donotmodifythecurrentmaximumloglength.TheMaximumLogLengthfield
valueisignored.
00b
Reserved01b
SetthemaximumloglengthtothevaluespecifiedintheMaximumLogLength
field.AllSnapshotlogsarecleared.
10b
Setthemaximumloglengthtothedefaultlength.AllSnapshotlogsarecleared.
TheMaximumLogLengthfieldvalueisignored.
11b...

ThedriveinitiatescreationofanewSnapshotlogwhenadeviceserverreturns
CHECKCONDITIONstatustoacommand,oranunloadoperationfailswith
thesensedataspecifiedintheDriveErrorCodefield.
IftheDriveErrorCodefieldissetto00h,thedeviceserverwillterminatethe
commandwithCHECK-CONDITION,asensekeyofILLEGALREQUESTand
additionalsense2400h(invalidfieldinCDB).
1
IftheSnapshotonUnloadbitissettoonethetapedrivewillinitiatethecreationofanew
Snapshotlogwhenthetapedriveunloadsmediaexceptinthefollowingcircumstances:...

SETTIMESTAMPparameterdata
01234567
Reserved(0)0–3
Timestamp(6bytes)4
9
Reserved(0)10–11
Theinitialvalueofthetimestamp,whichisthenumberofmillisecondsthathaveelapsedsince
midnight,1January1970UT.IfthehighorderbyteinthefieldisgreaterthanF0h,the
commandwillterminatewithCHECKCONDITION,sensekeyofILLEGALREQUEST,and
additionalsenseof2600h(invalidfieldinparameterlist).
Timestamp
SPACE11h/91h
SPACEprovidesavarietyofpositioningfunctionsthataredeterminedbyCodeandCountfields...