Hello. The hard drives on R720 should be hot swapable. Drives that are not hot swapable are ones that are cabled. For cabled drives, the server has to be powered down before any drive can be replaced.   Usually, the drive rebuilds automatically but in case that it does not rebuild and slips into a "Ready" state, the use OpenManage Server Administrator (OMSA) or controller BIOS to assign it as a hot spare to trigger a rebuild into the RAID array. In OMSA, go Storage -> PERC -> Virtual Disk -> Physical Disk and under Available Tasks of the replaced disk choose Assign as Hot Spare.
Hi All, my server is 2 months out of warranty and I will get a new warranty, but it will take some time to get management to pay for it. I have a R720 with a Raid 1 setup and 1 drive has failed. Server is up and running. I have two questions that I need answers to: 1 - Can someone confirm that the drive are hot swapable 2 - Will the RAID 1 rebuild it self after added the new drive or do I need to schedule downtime for the RAID to rebuild. Thank You  Devin
R720- Hot Swap and Raid 1 Rebuild