Spectra T950 - Page 279

Chapter 9 — Configuring and Using Media Lifecycle Management BlueScale Media Lifecycle Management
November 2016 User Guide—Spectra T950 Library
279
WhenMediaAutoDiscoveryisenabled,MLMprovidestwooptionsfor
proactivelydiscoveringmediainapartition:
 MediaAutoDiscovery—Thedefaultprocessthatcollectsinformation
fromthecartridgeMAMandaddsittotheMLMdatabase.TheMedia
AutoDiscoveryprocessonlyoperateson newlyimportedcartridgesthat
are notalreadyintheMLMdatabase.
 PreScan—AnoptionalprocessthatreplacesMediaAutoDiscovery.If
thePreScanfeatureisenabledinapartition,thePreScanprocessruns
insteadoftheMediaAutoDiscoveryprocessandoperatesonallofthe
mediainthepartition,regardlessofwhetheritisalreadyintheMLM
databaseornot.
Inadditiontoaddinginformationcollectedfromthecartridge MAMto
theMLMdatabase,PreScanperformsabasicfunctionalitytestand
healthcheckoneachimportedcartridge(seeUsingPreScanon
page298formoreinformation).
Discovery Process Thediscoveryprocesscaneitherbemanuallyinitiated
byyouorsettorunautomaticallysothatthelibrarydiscoversthe
cartridgesandaddstheirinformationtotheMLMdatabaseshortlyaftera
cartridgeisimportedintothelibrary.Thediscoveryprocessis
independentofanystoragemanagementsoftware.
ThediscoveryprocessdependsonwhetherthelibraryisusingMediaAuto
DiscoveryorPreScan.WithMediaAutoDiscoverythelibraryreadsthe
barcodelabeloneachnewcartridgeinthepartition;withPreScanthe
libraryreadsthebarcodelabeloneverycartridgeinthepartition.Ifa
barcodeisnotalreadyintheMLMdatabase,thelibraryloadsthecartridge 
intoadriveandperformseitheraPreScanorthebasicMediaAuto
Discovery.
 IfthecartridgeisMLM‐enabled,thelibrarycollectstheavailableMLM
informationfromthecartridge’sMAM,includingtheborn‐ondate.If
thecartridgewasusedpreviously,thelibraryalsocollectsmediahealth
andencryptionstatusfromtheMAM.ThelibraryupdatestheMLM
databasetoincludethecollectedinformationandthenameofthe
partitionwhereitcurrentlyresides.AnyupdatedMLMinformationis
alsowrittentotheMAMinthecartridge.
 IfthecartridgeisnotMLM‐enabled,thelibrarycollectsthecartridge
barcodelabelinformation,thecartridgehealthinformation,andthe
nameofthepartitionwherethecartridgecurrentlyresides.Itthenadds
thisinformationtotheMLMdatabase.
Whenthediscoveryprocessiscomplete,thedriveunloadsthecartridge
andthelibraryreturnsthecartridgetoitsoriginallocation.Each
subsequentload/unloadupdatestheMLMdatabaseandthecartridge
MAM,providingongoingtrackingandreportingforthecartridge.