Spectra T50e - RESOLVING OPERATIONAL ISSUES

Chapter 12—Library Troubleshooting Troubleshooting MLM Issues
August 2017 User Guide—Spectra T50e Library
353
TROUBLESHOOTING MLM ISSUES
Thissectionprovidesinformationaboutpotentialissuesthatyoumay
experiencewhileusingMLM.
Issue Cause Resolution
An asterisk (*)
appears next to the
barcode on the
MLM Details screen
or an MLM report.
Thecartridgewasexportedfromthelibrary. Ifyoudonotintendto
reimportthecartridge,you
candeleteitfromtheMLM
database(see
DeleteMLM
RecordsFromtheDatabaseon 
page268).
An “x” appears next
to a barcode in the
Inventory screen.
Thecleaningcartridgeisexpired. Exporttheexpiredcartridge
orexchangeitforanewone
(see
ExportingorExchanging
Cartridgesonpage207).
The library does not
proactively discover
new cartridges
when they are
imported.
Thediscoveryprocess(MediaAutoDiscovery
orPreScan)cannotbeginwhilethehostsare
activelyloadingcartridgesintoorunloading
cartridgesfromthedrives.Ifyouimport
cartridgesduringthistime,thelibrarypostsa
failuremessagestatingthatnodrivesare
availabletoperformthediscoveryprocess.
Eitherwaituntilthelibraryis
idlebeforebeginningan
importoperationormanually
startthediscoveryprocessfor
importedcartridgeswhenthe
libraryisidle.See
Initiate
MediaDiscoveryManuallyon
page243forinstructions.
The media health
reported by MLM
for LTO-4 media
changed after it was
loaded into an
LTO-5 or LTO-6
drive.
ThealgorithmusedtodetermineMLMmedia
healthinLTO‐5andlatergenerationdrives
differsfromthealgorithmusedforLTO‐4
drives.ForBlueScalesoftwareversionsearlier
thanBlueScale12.0.7,whenLTO‐4mediais
usedinbothLTO‐4andLTO‐5orLTO‐6
drives,themediahealth
reportedbyMLMis
inconsistentbetweenthetwodrive
generations.
BeginningwithBlueScale12.0.7,afteran
LTO‐4cartridgeisloadedintoanLTO‐5or
latergenerationdrive,thelibraryadjuststhe
algorithmusedtocalculatethemediahealth
scorewheneverthecartridgeissubsequently
loadedintoanLTO‐4drive.Thisadjustment
ensuresthatthereportedmediahealthis
consistent,regardlessofwhethertheLTO
‐4
cartridgeisusedinanLTO‐4oranLTO‐5or
latergenerationdrive.
Asabestpracticeforyour
LTO‐4media,SpectraLogic
recommendsthatyou
configureLTO‐4andLTO‐5or
latergenerationdrivesin
separatepartitionsandthat
youdonotroutinelyshare
LTO‐4mediabetweenLTO‐4
andLTO‐5orlatergeneration
drives.