Spectra T50e - Using Dlm to Test an Lto Drive

Chapter 13—Drive Troubleshooting Using DLM to Test an LTO Drive
August 2017 User Guide—Spectra T50e Library
407
USING DLM TO TEST AN LTO D RIVE
Overview BlueScaleDriveLifecycleManagement(DLM)letsyoumonitor
theDLMhealthinformationofeachLTOdriveinthelibraryandhelpsyou
identifydrivesthatexperienceahighnumberoferrorsorotherproblems
duringoperation.SeeChapter9–UsingDriveLifecycleManagement,
beginningonpage272fordetailedinformationaboutusingDLMto
monitorthehealthofLTOdrives.
IfyoususpectthatadriveisexperiencingproblemsoriftheDrive
LifecycleManagementreportindicatesthatadriveisexperiencing
repeatederrors,youcanusetheDLMDriveHealthVerificationwizardto
testthedrive.Thistest,whenusedinconjunctionwithotherDLMdata
andMLMdata,canhelpyoudetermine whetheradriveorthemediaisthe
sourceoftheerrorsyouareinvestigating.
User Privilege Requirements Onlyauserwithsuperuseroradministrator
privilegescanperformaDLMDriveHealthtest.
Requirements for Using the Wizard BeforeyoucanruntheDLMDrive
HealthVerificationwizard,thefollowingrequirementsmustbemet:
 Thedrivemustnotcontainacartridge.
 Thedrivemustbecleanedjustbeforebeginningthetest.
 AscratchtapethatisthesameLTOgenerationasthedrivebeingtested
mustbeavailableinthepartition’sentry/exitpool.Thescratchtape
healthmustbeGood(green)foranMLM‐enabledcartridgeorUsable
foracartridgethatisnotMLM‐enabled.YoucanuseMLMtodetermine
thehealthofthecartridgescurrentlyinthestoragepartitioncontaining
thedriveyouwanttotest(see GenerateMLMReportsonpage255).
 Thescratchcartridgemusthaveabarcodelabel.
 Thescratchcartridgemustnotbewrite‐protected.
 IfthescratchcartridgeisencryptedusingBlueScale encryption,the
encryptionkeymustbepresentonthelibrary.
Notes:  Ifthecartridgehealthisunknown(thatis,itisnotcurrently
listedinthelibrary’sMLMdatabase),thelibraryloadsthe
cartridgeintoadrivetodeterminethehealthbefore
beginningthetest.
Caution
Make sure that the scratch tape does not contain data that you need to retain. The
test process overwrites all data on the tape.
Important
The DLM Drive Health test requires the scratch tape used for the testing to be the
same generation as the drive. If the tape is not the same generation as the drive,
the test fails.
Important
The test fails if the scratch cartridge health is not Good or Usable.