Hello jr429 If a replacement drive does not automatically start rebuilding then you should go into the controller BIOS and manage the secondary disk. Add the new drive to the array. Performing the replacement with the hot spare method will leave PD 0 in a missing state. The array will function normally, but I'm not aware of a way to clear the missing state on slot 0 without inserting a drive into that slot and adding it to the mirror. I would suggest that you let the rebuild complete, remove the drive, insert the drive in slot 0, and then add the drive to the array. If the hot spare shows as missing then manage hot spares and unassign the hot spare. Thanks
SAS 6/iR controller showed a degraded RAID 1 with Phys Disk 0 failed.  Replaced drive with a new drive and it shows missing in slot 0.  Moved the new drive to slot 4 and added as a HOT spare and it is resyncing the RAID 1 MIRROR. Ran Diagnostics on controller and it shows OK, reseated all cables, drives, backplane and controller card to no avail.  Any ideas on what's wrong with slot 0?
R610 SAS 6/iR slot 0 won't enumerate