Asset ID:	1-72-1297839.1
Update Date:	2011-12-05
Keywords:

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Solution Type  Problem Resolution Sure

Solution  1297839.1 :   VTL - Physical Device (LUN) on VTL Console has a red dot on the icon: Disk offline  

In this Document
  Symptoms
  Cause
  Solution

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Created from <SR 3-2745510651>

Applies to:

Sun StorageTek VTL Plus Storage Appliance - Version: 2.0 - Build 1590d to 2.0 - Build 1656 - Release: 2.0 to 2.0
Information in this document applies to any platform.

Symptoms

On the VTL Console, when selecting Physical Resources>Storage Devices>Fibre Channel Devices, one or more LUNs (Volumes) has a red symbol to the left of the LUN name, indicating "Offline".  

Within NetBackup backup application, the tapes are frozen.   

Cause

According to the ipstor.dat.cache file, it indicates two out of four paths for affected LUN's are offlined, which including the prefer path. Therefore, the console displays a red dot for this LUN.

      <PhysicalDev guid="fa1c040c-b2d9-f54c-8469-bd3379c95ff8" adapter="3" id="0" lun="12" status="offline"/>   //The prefer path
      <PhysicalDev guid="fa1c040c-b2d9-f54c-8469-bd3379c95ff8" adapter="4" id="35" lun="12" status="online"/>
      <PhysicalDev guid="fa1c040c-b2d9-f54c-8469-bd3379c95ff8" adapter="5" id="0" lun="12" status="online"/>
      <PhysicalDev guid="fa1c040c-b2d9-f54c-8469-bd3379c95ff8" adapter="6" id="35" lun="12" status="offline"/>

Solution

Run a rescan for new devices from the VTL Console:
- Right click on "Physical Resources" and select rescan.

Note: It's recommended to do the rescan during low backup activity as to not impact/interrupt backups.

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