IBM E16RMLL-I Implementation Guide - Page 582
SAN device discovery support
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In Example 16-20, we define the required paths. Example 16-20 Storage agent path definition to the shared tape drives tsm: ATLANTIC>define path sta_diomede dr00 srctype=server desttype=drive \ cont> library=3582_shared device=mt0.0.0.2 ANR1720I A path from STA_DIOMEDE to 3582_SHARED DR00 has been defined. tsm: ATLANTIC>define path sta_diomede dr01 srctype=server desttype=drive \ cont> library=3582_shared device=mt1.0.0.2 ANR1720I A path from STA_DIOMEDE to 3582_SHARED DR01 has been defined. We review our settings using the query path command, which reveals all defined paths, as shown in Example 16-21. Example 16-21 Defined path summary using query path command tsm: ATLANTIC>query path Source Name ----------ATLANTIC ATLANTIC ATLANTIC STA_DIOMEDE STA_DIOMEDE Source Type ----------SERVER SERVER SERVER SERVER SERVER Destination Name ----------3582_SHARED DR00 DR01 DR00 DR01 Destination Type ----------LIBRARY DRIVE DRIVE DRIVE DRIVE On-Line ------Yes Yes Yes Yes Yes 16.4 SAN device discovery support With Tivoli Storage Manager V5.3 and later, the server and Storage Agent option sandiscovery, if specified, means that the server will perform SAN discovery during both server initialization and if the device path has changed. Essentially, if the SAN device identification has been changed due to SAN environmental changes, such as device, cabling changes, or bus resets, the server or Storage Agent will discover these changes during server or Storage Agent startup or when accessing the paths during operations with the drives and will perform the necessary changes to the path definition, based on the drive serial number. Thus, the path will not go offline. Instead, it stays online and available for the operation. On Windows platforms this option is set by default. On other platforms enable SAN discovery using the SANDISCOVERY on option in the server options file 552 IBM Tivoli Storage Manager Implementation Guide
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