What steps should you follow to replace a failed hdisk?


1. Remove all allocated logical volumes (if not mirrored) or LV copies (if mirrored).
rmlv <lv_name> or unmirrorvg <VG_Name> <hdiskX>

2. Remove disk from the volume group.
reducevg -d <VG_Name> <hdiskX>

3. Remove disk definition
rmdev -dl <hdiskX>


4.   Have IBM CE to physically replace disk
diag (Task Selection --> Hot plug Task --> Scsi and Scsi raid hot plug manager --> Identify Device (it will show hdiskX as populated - means removed from AIX system  or no more detected in System), then F3, then Replace /Remove option,select appropriate disk and hit enter, get a Replace or Remove window... Here wait for CE to replace hdisk, after getting the approval from CE hit enter.

Note: Hard disk will be replaced at this stage by IBM Field Engineer... then hit enter


5. Run cfgmgr.
            # bootinfo -s hdiskX

6. Add disk to volume group and recreate LVs or LV copies.

              # extendvg <VG_Name> <hdiskX>
              # mirrorvg -s <VG_Name>
              # lsvg -l <VG_Name>