This is the latest version of OMSA:[URL] Download the EXE, then run to extract files. Run C:\Openmanage\Windows\setup.exe, then add yourservernameorip:1311 to IE's Intranet zone. Many things can prevent it from rebuilding automatically. It should begin rebuilding within about a minute of being assigned as a hot-spare. If it doesn't, the disk may not be suitable as a hot-spare (too small, wrong type (SAS/SATA/SSD), incompatible (NAS, desktop/laptop, non-certified), or if the array is damaged. What model disk is it? You ARE able to set it as a hot-spare, right? If not, make sure the drive is not listed on the PD MGMT screen in CTRL-R as "foreign".
Got a T310 here with 4x250GB HDDs configured in a RAID 5. Had one drive fail, and the controller reports the RAID as degraded. I replaced the drive with a known good one. Does the S300 automatically rebuild? I went into the controller menu to make sure it saw the drive, which it did, and I let it sit for a while, but I don't see that the new drive is part of the array. I tried setting it to a hot spare, but it doesn't pick it up to rebuild the array. I'm trying to do this within the controller, because Windows is running extremely slowly at the moment, and I'm hoping it's because the array is down a drive. I tried to install Open Manage, but the system seems to hang when it tries to open the executable.
T310 with S300 in RAID 5 - How do I rebuild after replacing a drive?