Hello   The new drive is in an online state. In order for it to be available to assign to a virtual disk it needs to be in a ready state. What has likely happened is that the S100 put the drive into a non-RAID virtual disk once it was inserted. If that is the case then you need to delete the non-RAID virtual disk to make it available to rebuild. Thanks
We have a PowerEdge T310 with S100 controller. 2 Raid-1 Arrays  Array 1 2x2GB Sata drives Array 2 2x250GB SSD One of the drives in array 1 failed. Replaced the dead drive with a new (unformatted blank) and it doesn't rebuild. Tried to assign as hot spare through OMSA but get the error "Storage Management only displays those disks that can be used as a hot spare. There are currently no disks that are available, large enough, or of the correct type to be used as a hot spare for this virtual disk." Old Drive details: ID 0:0Status OKName Physical Disk 0:0State OnlineBus Protocol SATAMedia HDDRevision PA08Capacity 1,863.00GBUsed RAID Disk Space 1,863.00GBAvailable RAID Disk Space 0.00GBHot Spare NoVendor ID DELLProduct ID ST2000NM0011Serial No. Z1P4R4QVSector Size 512BSAS Address 7EB176BB56EB6F1A  New Drive: ID 0:1Status OKName Physical Disk 0:1State OnlineBus Protocol SATAMedia HDDRevision EN02____Capacity 1,863.02GBUsed RAID Disk Space 1,863.02GBAvailable RAID Disk Space 0.00GBHot Spare NoVendor ID DELLProduct ID ST2000NE0025-2FL101Serial No. ZDS02B9KSector Size 512BSAS Address 27B9A680108D7A14  Any ideas?
Replacing HDD, won't rebuild