Spectra T50e - PARTITION OVERVIEW

Chapter 5—Operating the Library Identifying Drives and Partitions in the Library
August 2017 User Guide—Spectra T50e Library
153
Identify Fibre Channel-Based Partitions
WhenmonitoringconnectionstomultiplelibrariesthroughaFibre
Channelswitch,knowingtheWWNforastoragepartitionisusefulfor
identifyingaparticularlibrary.
EachFibreChannel‐basedpartitioninthelibraryisidentifiedbytheWWN
shownonthePartitionsscreen.ThepartitionWWNisactuallytheWorld
WidePortName(WWPN)forPortAofthe FibreChanneldrivethat
providestheroboticcontrolpathforthepartition(theexportingdriv e). Asa

result,thepartitionhasadirectrelationshiptotheWWNoftheexporting
drive.Forexample,comparetheWWNforPartition1withtheWWNfor
drivefLTO‐DRV2BinFigure96.
PartitionWWNshavethefollowingcharacteristics:
 WhenseenfromtheFibreChannelswitch,eachstoragepartition
definedinthelibraryappearsasanindependentlibraryconnectedto
theFibreChannelarbitratedlooporfabric.
 WhenseenfromtheFibreChannelswitch,theseconddigitofa
partition’sWWNindicateswhichtapedriveportisconnectedtothe
switch.IftheseconddigitfromtheleftintheWWNis1,theconnection
isthroughPortA;a2indicatesaconnectionthroughPort
B.Onlythe
WWNforPortAisshownonthePartitionsscreen.
 Becausetheydonothaveanydrivesassociatedwiththem,cleaning
partitionsdonothaveWWNs.
 SAS‐basedpartitionsarealsoassignedWWNs.TheWWNisbasedon
theSCSIportidentifierforPortA.
Figure 96 Compare the WWN assigned to Partition 1 (shown on the Partitions screen) with the WWN
for drive fLTO-DRV2B, which is the exporting drive for Partition 1 (shown on the Drive Details screen).