Wednesday, December 2, 2020

SAN LUNs/Disks are not detecting by OS post SAN storage Power outage.

SAN LUNs/Disks are not detecting by OS post SAN storage Power outage.

 

Recently one of the Customer experienced SAN power outage. Many Servers with make HP, IBM, CISCO and various OS flavors were impacted. Post SAN Storage (Fiber Channel) recovery SAN disks were automatically discovered after the Server reboot.

 

However, for many IBM Servers mainly BladeCenter HS22 irrespective of OS, SAN drives did not reconnect after the Server reboot as well.

We had to perform below Steps to reconnect the SAN storage.

  1. Login to IBM bladecenter Advanced management Module
  2. Navigate to I/O Module Task
  3. SelectàAdmin/Power/Restart
  4. SelectàRestart Module(s) and Run standard Diagnostics
  5. ClickàPerform action 
  6. Reboot/Start the Server.












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