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Thursday, February 17, 2011

SSA Disk Replacement Procedure

1) Check the errpt output for disk errors.

2) If the output shows

a) Disk operation error and is of type permanent.
b) SSA Array Degraded error.

3) Check the Array using SMITTY ssaraid -> List/Identify SSA Physical Disks->
-> List Rejected Array Disks

4) To check which array corrupted disk belongs to-> List Disks in an SSA RAID Array -> Select the raid array which is degraded.

5) Exit from SMITTY and Run diag -> Task Selection -> SSA Service Aids -> certify disk -> select the disk you want to get certified -> select certify.

6) If the disk is certified as good disk, you can add it again to the array otherwise try formatting the disk to get certified as good disk.

7) Once the disk is certified as good disk or Replace with a new disk, Add to the degraded array through the following SMITTY menus.

a) SMITTY ssaraid -> Change/Show Use of an SSA Physical Disk -> select the disk you want to make it an Array candidate disk -> Change the status of the disk from system disk to Array candidate disk.

b) Exit back to previous menu and select-> Change Member Disks in an SSA RAID Array ->Add a Disk to an SSA RAID Array-> select the Array to add the disk then -> select the Array candidate disk to the array.

c) Exit back to Main menu and select -> Change/Show Attributes of an SSA RAID Array -> select the adapter ->select the Array you want to check the status-> Now the state option will show Rebuilding.

Note:

If the new disk is replaced for the corrupted disk, following are procedure
to make it available to OS

a) Remove the old disk using rmdev –dl pdisk(x)
b) Add new disk to the system then check if it is configured run the following commands.

cfgmgr –l ssar
lsdev –Cc pdisk

c) Follow the above SMITTY menus to add the disk to the raid array.

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