Spectra T50e - Page 234

Chapter 8—Configuring and Using Media Lifecycle Management Media Lifecycle Management Overview
August 2017 User Guide—Spectra T50e Library
232
Automatic Discovery TheMediaAutoDiscoveryfeatureisabackground
processthatloadsMLM‐enabledcartridges intoanLTO‐4orlatergeneration
drive,recordstheMLMinformationtothecartridgeMAM,addsthecartridge
totheMLMdatabase,andreturnsthecartridgetoitsoriginallocation.The
processisperformedbythelibraryindependentlyfromthestorage
managementsoftware.  MediaAutoDiscovery mustbeenabledonthe
library,asdescribedinEnablingMLMandConfiguringGlobalSettingson
page235,beforeitcanbeused.
Notes:  Ifyoudonotwanttouseautomaticmediadiscovery,youcan
waituntilthelibraryloadsandthenunloadseachcartridge
fromanMLM‐capabledriveforthefirsttimeduringnormal
operation.Whenthecartridgeisunloadedfromthedrive,the
librarydiscoversitandrecordstheMLMdatatothe
cartridgeMAMandentersthedataintotheMLMdatabase.
 Afteryouenable MediaAutoDiscovery,importingacartridge
intoapartitiontriggersthediscoveryprocessinthatpartition.
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.
Note: MediaAutoDiscoveryloadsandreadstheMAMinthetape,but
doesnotthreadthetape.Thedriveonlyreportsthemaximum
andremainingcapacityforthetapeafterthetapeisthreaded.
Therefore,thesestatisticsreportasʺ0ʺuntiladrivereadsfrom,
orwritesto,thetape.
 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usingavailable
LTO‐4orlater
generationdrives
inthepartition(seeUsingPreScanonpage245for
moreinformation).
Discovery Process Whenautomaticmediadiscoveryisenabled,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.