You are correct in that a single disk failure in RAID5 is rebuilt from the other members in the raid group - no actions needed at the lun level. VMAX systems contain hot spares, so the drive rebuild is automatically performed to the hot spare typically. This all occurs transparently to the host environment. Should there be multiple drives fail in the same RG, you should contact EMC support immediately. The array will dial home anyway provided there is connectivity and a maintenance contract in place. It may be possible for EMC support to rebuild the raid group without going to backup, but yes, it is quite possible that you will face a data-loss situation and require a recovery from backup. Note that in an SRDF/S environment where the VMAX is replicating to a remote array, the remote array acts as an additional mirror, so less chance of data loss in a compromised RAID group scenario.
hi, in solaris i see that a disk is failed.so i replace it in vmax 40k.After i replace the disk physically should i execute further things in SAN like recreate LUN or others.the pool is raid5.tnx.
disk