HP Lto 5 Manual

							PerformanceDatalogpage
ThePerformanceDatalogpageis34h.Thislogisintendedtoreportdataofinteresttoa
user/applicationonhowefficientlythedriveisbeingused.
UpdatedLengthDescriptionParameter
Aftereach100MBhasbeenphysicallywritten2Repositionsper100MB0
Aftereachdatasethasbeenlogicallywritten2Datarateintobuffer1
Aftereachdatasethasbeenlogicallywritten2Maximumdatarate2
Aftereachdatasethasbeenlogicallywritten2Currentdatarate3
Fixed2Nativedatarate4
TheParameterControlByteis60hforalltheparameters.
Alltheparametersrelatetothecurrenttape.Theyareallclearedatthestartoftapeload,except
Parameter4,whichisnevercleared.Alldatawillberesetwhenthelogpageisreset.The
parametersareasfollows.
Numberoftapedirectionchangesper100MBwritten.Thehigherthefigurethemorewear
occurs.
Repositionsper100
MB
Rateatwhichdataisenteringthebuffer(afterdatacompression),giveninunitsof100KB/s.
Thisisthetrue‘tape’datarate.
Datarateintobuffer
Giventhecompressibilityofthedatathathasbeensenttothedrive,thisisthemaximumdata
ratethatcouldbeachieved,giveninunitsof100KB/s.Thefigureiscalculatedbasedonthe
compressibilityofeachdatasetreceived,anddatasetsthathaveacompressibilitygreaterthan
thecompressionbandwidthofthedrivewillbe‘capped’.
Maximumdatarate
Rateatwhichdataisbeingacceptedbythedrivebeforecompression,giveninunitsof
100KB/s.
Currentdatarate
Thenativerate(thatis,withoutusingcompression)atwhichthedrivewritesdatatotape,given
inunitsof100KB/s:
Nativedatarate
NativeDataRateValueDrive
NOTE:Thesefiguresarefornativemedia
typesandwillvarywhenearlierformat
mediaisloaded
140MB/s0578hLTO-5
DTDeviceErrorlogpage
TheDTDeviceErrorlogpagedefinesloginformationrelatningtohardwareandmediaerrors
reportedbytheDTDeviceviathedrive'sfrontpanel,whereapplicable,and/ortheInterface
ManagerVHFdatafieldsHARDWAREERRORandMEDIAERROR.
01234567
PageCode(35h)SPF(0)DS(0)0
SubpageCode(00h)1
PageLength(n–3h)(MSB)2
(LSB)3
DTDeviceErrorLogParameters4
n
LOGSENSE4Dh81 
						

							DescriptionCodeDTDeviceErrorLogParameters
HardwareErrordata(seebelow)0000h
MediaErrordata0001h
Reserved0002h–7FFFh
Vendor-specific8000h–FFFFh
HardwareErrordatalogparameter
01234567
ParameterCode(0000h)(MSB)0
(LSB)1
Format&Linking(11b)TMC(0)ETC(0)TSD(0)ObsoleteDU(0)2
ParameterLength(16h)3
SenseKeyReserved(0)4
AdditionalSenseCode5
AdditionalSenseCodeQualifier6
HardwareError(MSB)7
(LSB)8
HostIdentification(MSB)9
(LSB)16
Power-onCount(MSB)17
(LSB)18
Power-onTimeofError(MSB)19
(LSB)22
LibraryTimeofError(MSB)23
(LSB)25
Thelasthardwareerrorreportedbythedrive.Settozeroifnohardwareerror
hasbeenreported.
HardwareError
TheNAA-formatWorldWideNameofthehostthatinitiatedthecommand
thatresultedinthehardwareerror,ifknowntotheDTDevice.IftheDTDevice
doesnotknowthehostidentification,thefieldistreatedasreserved.
HostIdentification
Thenumberoftimesthedrivehasbeenpoweredonbeforethehardwareerror
occurred.
Power-onCount
Thelengthoftime(inseconds)theDTDevicehadbeenpoweredonwhenthe
hardwareerroroccurred.
Power-onTimeofError
Thetimethehardwareerroroccurred.Thetimeisexpressedinhours,minutes
andsecondsusingtheLibraryTime,whichmaybesetusingtheDeviceTime
modepage(3Ch).
LibraryTimeofError
HoursByte0
MinutesByte1
SecondsByte2
82Commands 
						

							DeviceStatuslogpage
TheDeviceStatuslogpageis3Eh,withapagelengthof28h.PCB=ParameterControlByte.
PCBUpdatedLengthDescriptionParameter
40hObsolete.Settoallzeros.4DeviceType0
40hUsedtoprovideremotestatusofselected
monitoringpointsonthedrive.Seebelowfor
theformat.
4DeviceStatusBits1
60hNumberofloads/unloadsoverthelifeofthe
device.
4TotalNumberofLoads2
40hAccumulatednumberofusesofthelast
cleaningcartridge.Updatedafterthetapeis
loadedandacleaningeventattempted.If
thereisnovalue,FFFFFFFFhisreturned.
4CleaningCartridgeStatus3
40hUniquenumberthatidentifiestheproduct4ProductNumber4
DeviceStatusBits
Theparameterhasthefollowingformat:
01234567
ECTCRCRQReserved(0)0
DeviceStatusTemperatureReserved(0)1
MediumStatusReserved(0)2
Reserved(0)5
CleaningRequiredflagCRQ
CleaningRequestedflagCR
ExhaustedCleaningTapeflagECT
Fieldnotsupported
TemperatureOK
Temperaturedegraded
Temperaturefailed
00b
01b
10b
11b
Temperature
Theoverallstatusofthedrive:DeviceStatus
Fieldnotsupported
DevicestatusOK
Devicestatusdegraded
Devicestatusfailed
00b
01b
10b
11b
Theoverallstatusofthetapecartridge:MediumStatus
Fieldnotsupported
MediumstatusOK
Mediumstatusdegraded
Mediumstatusfailed
00b
01b
10b
11b
LOGSENSE4Dh83 
						

							TriggersforchangesintheDeviceStatusandMediumStatusfields
ThefollowingtablesummarizesthetriggersthatcausetheDeviceStatusandMediumStatusfields
tobesettodifferentvalues:
MediumStatusDevice
Status
FaultTape
Unrecoverable
Fault
Tape
FaultDrive
Unrecoverable
Fault
Drive
Event
GoodFailed0011Power-onself-testfailure
GoodDegraded0001Mechanisminterfacehardware
error
DegradedGood0100Snappedtape
FailedFailed1111Unrecoverablesnappedtape
DegradedGood0100Loadfailurefordriveerrorwith
MediaFaultbitsetinerrorcode
GoodDegraded0001Loadfailurefordriveerrorwith
DriveFaultbitsetinerrorcode
DegradedFailed0110Unrecoverableunloadfailure
errorwithMediaFaultbitsetin
errorcode
GoodFailed0011Unrecoverableunloadfailure
ferrorwithDriveFaultbitsetin
errorcode
DegradedGood0100Unloadfailureerrorwith
MediaFaultbitsetinerrorcode
GoodDegraded0001Unloadfailureferrorwith
DriveFaultbitsetinerrorcode
DegradedGood0100Readorwritetapeerror
DegradedGood0100Cleaningtapeerror
Degraded0001Cleaningdriveerror
DegradedGood0100Cleaningtapeexpired
Degraded0001Mechanismfailure
DegradedGood0100CartridgeMemoryread/write
failure
DegradedGood0100Firmwareupgradeviatape
withchecksumorincompatible
image
DegradedGood0100Loadfailuredueto
unsupportedformat
DegradedGood0100Loadfailurewithinvalid
cleaningmedia
DegradedGood0100Rewindfailurefordriveerror
withtheMediaFaultbitset
GoodDegraded0001Rewindfailurefordriveerror
withtheDriveFaultbitset
DegradedGood0100Medialifeexpired
DegradedGood0100MediaEODinvalid
84Commands 
						

							MANAGEMENTARMSELF-TESTA3h(1Fh)
TheMANAGEMENTARMSELF-TESTcommandallowsanapplicationclienttoinitiateaspecific
ManagementARMself-test.
NOTE:ExecutingthiscommandrequirestheNetworkInterfacetobere-initializedtoreturnitto
anoperationalstate.
Pre-executionchecks
DeferredErrorReservationIllegalField
AvalidTestIDmustbeprovided,otherwisethedeviceserverterminatesthecommandwithCHECK
CONDITION,asensekeyofHARDWAREERRORandadditionalsenseof4400h(internaltarget
failure),andreportsdriveerror1879h.
Commanddescriptorblock
01234567
OperationCode(A3h)0
ServiceAction(1Fh)Ignored1
ServiceActionQualifier(14h)2
TestID3
Reserved(0)4
8
AllocationLength9
Reserved(0)10
Control11
CDBfields
AvalidTESTIDmustbeprovided.IfaninvalidTESTIDisspecifiedthedeviceservershall
terminatethecommandwithCheckConditionstatus,settheSenseKeytoHardwareError
(04h),theadditionalsensedatatoInternalTargetFailure(4400h)andreportdriveerror
1879h.
TestID
Alltests00h
TestFB101h
TestFB202h
TestFB303h
TestFB404h
MACreg105h
MACreg206h
MACreg307h
PHYreg108h
PHYreg209h
PHYreg30Ah
VIC0Bh
MANAGEMENTARMSELF-TESTA3h(1Fh)85 
						

							Timer0Ch
DRAM0Dh
Tracepoint0Eh
RTC0Fh
Thelengthinbytesallocatedfortheparameterdata.Theactualnumberofbytesreturnedwill
bethelesserofthelengthoftheactualparameterlistandtheallocationlengthspecifiedinthe
command.
AllocationLength
MANAGEMENTARMSELF-TESTreturneddata
Thecommandreturns1byteofresultdataduringthedata-outphasetoindicatetestcompletion
status:
01234567
CompletionStatus0
Success0AhCompletionStatus
Failure0Bh
MODESELECT15h/55h
MODESELECTisusedtosendconfigurationdatatothedrive.Both6-byteand10-byteversions
ofthecommandaresupported.
TheModeSelectparameterlististransferredfromthehosttothedriveduringthedata-outphase.
Itcontainszeroormorebytesofinformation.Ifanyinformationissent,itshouldconsistofaMode
ParameterHeaderfollowedbyzeroormoremodeselectpages.Internalparametersareset
accordingtothevaluesspecifiedintheheaderandpages.Fieldsintheparameterlistarechecked
andtheoperationwillterminateifanerrorisfound.
NOTE:Thedrivedoesnotcheckthattheparameterlistiscorrectbeforemodifyinginternal
parameters.Thelistischeckedastheoperationproceeds,soifthereisanerrorinthelist,all
parametersuptothatpointwillbesettotheirnewvalues,buttheparameterinerrorandlater
parameterswillnotbeupdated.
Pre-executionchecks
UnitAttentionDeferredErrorReservationIllegalField
NOTE:Failuretoflushwrite-behinddatawillbereportedasaDeferredError.
Theparameterlistlengthmustbesuchthatonly“entire”partsofaparameterlistaresent.Itis
illegaltosendapartialmodeparameterheader,apartialmodeblockdescriptororapartialmode
page.Ifthishappens,thenCHECKCONDITIONstatusisreported.ThesensekeyissettoILLEGAL
REQUEST.Theadditionalsenseissetto1A00h(parameterlistlengtherror).
Extrachecksmaybeperformedonthedata,seethedescriptionsfortheparameterlistformore
details.
86Commands 
						

							Commanddescriptorblock(6–byteversion)
01234567
OperationCode(15h)0
SP(0)Reserved(0)PFReserved(0)1
Reserved(0)2–3
ParameterListLength4
Control5
Commanddescriptorblock(10–byteversion)
01234567
OperationCode(55h)0
SP(0)Reserved(0)PFReserved(0)1
Reserved(0)2–6
ParameterListLength(MSB)7
(LSB)8
Control9
CDBfields
PageFormatPF
TheMODESELECTparameterdataisnotSCSI-2modepagecompatible.Onlythe
parameterheaderandblockdescriptormaybesent.
0
TheparameterdataisSCSI-2mode-pagecompatible.1
SavePagesSP
Thisbitisnotsupportedandmustbezero.0
Nodataistransferred.0ParameterListLength
ThelengthinbytesoftheMODESELECTparameterlisttobetransferred.>0
MODESELECTspecificstatus
FollowingasuccessfulModeSelectcommand,UnitAttentionstatusispostedtoallinitiatorsother
thantheinitiatoroftheModeSelectcommand.ThesensekeyissettoUNITATTENTION.Additional
senseissetto2A01h(modeparameterschanged).
Modeparameterpages
ModedataisrecoveredfromthedrivebymeansofaMODESENSEcommand.Aftermodification,
itisreturnedtothedriveviaaMODESELECTcommand.Inreal-life,manyhostsdonotuseMODE
SENSEandreturnwhateverMODESELECTdatasuitsthemintothedrive.
MODESELECT15h/55h87 
						

							Modepagerepresentation
CertainconventionsareusedinthefollowingModeParameterpagesinordertodescribethe
natureoftheparameters.Mostparametersaregivenbyname,followedbyanumberinbrackets.
Thebracketshavethefollowingmeanings:
Squarebracketsindicatethattheparametermaybemodified.Thenumberinside
thebracketsisthedefaultvalueforthefield—inotherwords,thepower-uporreset
value.
•MODESELECTmaymodifythisvaluebysendingthepagewithanewvaluein
thefield.
•MODESENSE(currentvalues)willreturnthecurrentvalueoftheparameter.
•MODESENSE(defaultvalues)willreturnthevalueinbrackets[].
•MODESENSE(changeablevalues)willreturnavalueofallones.
Squarebrackets[]
Roundbracketsindicatethattheparameterisfixed.Thenumberinsidethebrackets
isthefixedvalueforthefield.
•MODESELECTmustsettheparametertothisvalue,otherwiseCHECK
CONDITIONwillbereportedwithasensekeyofILLEGALREQUEST.
•MODESENSE(defaultvalues)willreturnthefixedvalue.
•MODESENSE(changeablevalues)willreturnavalueofallzeros.
Roundbrackets()
Modedataformat
Modedataconsistsofa4-byteheader,optionallyfollowedbyblockdescriptorandModeParameter
pages:
01234567
ModeParameterHeader(MSB)1
(LSB)3
ModeBlockDescriptor(MSB)4
(LSB)11
ModeParameterPages(MSB)12
(LSB)n
Modeparameterpages
HPLTOUltriumdrivessupportthefollowingpages:
•01h“Read-WriteErrorRecoverymodepage”(page91)
•02h“Disconnect-Reconnectpage”(page92)
•0Ah“Controlmodepage”(page93)
•0Fh“DataCompressionlogpage”(page79)
•10h“DeviceConfigurationpage”(page95)
•11h“MediumPartitionsmodepage”(page98)
•18h“Protocol-SpecificLogicalUnitmodepage(FCdrives)”(page102)
•18h“Protocol-SpecificLogicalUnitmodepage(SASdrives)”(page102)
•19h(FCdrivesonly):“Protocol-SpecificLogicalUnitmodepage(FCdrives)”(page102)
•19hSASdrives:“Protocol-SpecificPortmodepage(SASdrives)”(page104)
88Commands 
						

							•1Ah“PowerConditionmodepage”(page109)
•1Ch“InformationExceptionsmodepage”(page109)
•1Dh“MediumConfigurationmodepage”(page110)
•3Bh“SerialNumberOverridevendor-uniquemodepage”(page111)
•3Ch“DeviceTimemodepage”(page112)
•3Dh“ExtendedResetvendor-uniquemodepage”(page113)
•3FhOBDRFWvariantsonly:“CD-ROMEmulation/DisasterRecoverymodepage”(page114)
•Returnallpages(page3Fh)—forMODESENSEonly
Modeparameterheader
TheModeParameterheadermustalwaysbesentatthestartofModeSelectdata.Itisalways
returnedatthestartofModeSensedata.
6-byteheader
The6-byteModeParameterheaderhasthefollowingformat:
01234567
ModeDataLength0
MediumType[00hor01hifWORMmediaisloadedor80hifinCD-ROMmode]1
Speed(0)BufferedMode[001b]WP2
BlockDescriptorLength3
10-byteheader
The10-byteModeParameterheaderhasthefollowingformat:
01234567
ModeDataLength(MSB)0
(LSB)1
MediumType[00hor01hifWORMmediaisloaded(FCdrives)or80hifinCD-ROMmode]2
Speed(0)BufferedMode[001b]WP3
Reserved(0)4–5
BlockDescriptorLength(MSB)6
(LSB)7
Headerfields
ModeDataLengthfieldmustbezero.MODESELECT:ModeDataLength
ModeDataLengthfieldissettothenumberofbytesofdata
availabletoreturnexcludingitself(inotherwords,thenumber
ofactualbytesavailableismodedatalength+1for6-byte
MODESENSEor+2for10-byteMODESENSE).
Note:Theactualamountreturnedmaybetruncatedtothe
allocationlengthforthecommand.
MODESENSE:
MODESELECT15h/55h89 
						

							Theusualmediumtypewhenthedriveisinnormaltapedrivemode.00hMediumType
WORMmediaisloaded.01h
ThetapedriveisinCD-ROMemulationmodeforOBDR.80h
WriteProtect.IgnoredforMODESELECT.WP
MODESENSE:Thetapeiswrite-enabled0
MODESENSE:Thetapeiswrite-protected1
ThedrivewillnotreportGOODstatusonWriteandWriteFilemarkscommands
untilalldata(blocksandfilemarks)hasbeensuccessfullywrittentotape.
0BufferedMode
ThedrivewillreportGOODstatusforWriteandWriteFilemarkscommandsas
soonasallthedataormarksspecifiedinthecommandhavebeentransferred
tothedatabuffer.Dataformultiplecommandsfromdifferentinitiatorsmaybe
buffered.Thisisthedefaultvalue.NOTE:Itisstronglyrecommendedthatthis
fieldissetto1,otherwisetherewillbesignificantperformancepenalties.A
methodofflushingthebuffertotapewithoutchanginglogicalpositionisavailable
withtheWriteFilemarkscommand.
1
ThedrivewillreportGOODstatusforWriteandWriteFilemarkscommandsas
soonasallthedataormarksspecifiedinthecommandhavebeentransferred
tothedatabufferandallbuffereddatafromdifferentinitiatorshasbeen
successfullywrittentothetape.
2
TheSpeedfieldisnotusedandshouldbezero.0Speed
Onlythevalues0and8arevalid.Anyvalueotherthan0or8,CHECKCONDITION
statusisreported.SeetheParameterListcheckfordetailsofthesensedatagenerated.
BlockDescriptorLength
Noblockdescriptorisbeingtransferred.0
TheModeParameterheadermustbefollowedbythe8-byteblockdescriptor
describedinthenextsection.
8
Modeblockdescriptor
TheformatoftheModeParameterblockdescriptorisasfollows:
01234567
DensityCode0
NumberofBlocks(0)(MSB)1
(LSB)3
Reserved(0)4
BlockLength[0or800h](MSB)5
(LSB)7
ModeParameterblockdescriptorfields
Thisspecifiestheformatofthemedialoadedinthedrive.See“REPORTDENSITYSUPPORT44h”
(page159)fordetails.
DensityCode
ThisindicatesthesizeoffixedblocksforfixedmodeReadandWritecommands.Itisalsousedin
thedecisionprocessonwhethertoreportanillegallengthrecordonreads.
BlockLength
Thedriveisinvariableblocksizemode.0
Thedriveisinfixedblocksizemode,andthisfieldspecifiestheblocksize.Ifthedriveis
inCD-ROMmode,thevaluewillbe0800h.
>0
90Commands