Replace failed mirrored internal disk in AIX

The following procedure should be used to replace a failed internal (boot) disk on AIX 5 or higher, with software mirroring.(Note: in these examples, hdisk0 and hdisk1 are doubly-mirrored internal disks and members of rootvg; hdisk1 has failed)1. Identify the failed disk by analyzing the errpt logs. Confirm the failure using lspv by checking if "PV State" is "Missing".2. Break the mirror and