Spectra T950 - Using DLM to Test a Drive

Chapter 13 — Drive Troubleshooting Using DLM to Test a Drive
November 2016 User Guide—Spectra T950 Library
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USING DLM TO TEST A DRIVE
Overview BlueScaleDriveLifecycleManagement(DLM)letsyoumonitor
theDLMhealthinformationofeachdriveinthelibraryandhelpsyou
identifydrivesthatexperienceahighnumberoferrorsorotherproblems
duringoperation.SeeChapter10–UsingDriveLifecycleManagement,
beginningonpage322fordetailedinformationaboutusingDLMto
monitorthehealthof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.
Note: TheDLMDriveHealthVerificationtesttakesapproximately15
minutestocomplete.
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.
 Ascratchtapemustbeavailableinthepartition’sentry/exitpool.The
scratchtapemusthavethefollowingqualities:
 Itmustbethesamemediatypeandgenerationasthedrivebeing
tested.
 ItmusthaveacartridgehealthofGood(green)foranMLM‐enabled
cartridgeorUsableforacartridgethatisnotMLM‐enabled.
 Itmusthaveabarcodelabel.
 IfthescratchcartridgeisencryptedwithBlueScaleencryption,the
keymustbestoredinthelibrary
Note: 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 test fails if the scratch tape does not meet the conditions listed above.