Here I have a Dell Poweredge T110 II - RAID5 PERC S100/S300 with Windows Server 2008R2
Foundation 64-bit.
It has a 3-disk RAID 5 configuration of 500GB drives.
The drives appear as a 1TB drive (or nearly).
I didn't set this up and have rare opportunities to see these things.
I've dealt with a RAID 1 disk failure in the past and it was a simple matter of replacing the failed HD.
Recently, the system started running very very slowly. It's virtually unusable.
In looking at the RAID configuration, I see this:
The RAID 5 is shown as "DEGRADED".
There are the 3 drives: 0,1,2
Drive 0 is shown as part of the RAID array
Drive 1 is shown as READY
Drive 2 is shown as part of the RAID array.
From this, I conclude that Drive 1 is at least out of sync OR is bad to one degree or another.
In order to make progress, I added:
Drive 3, a 1TB drive
And physically disconnected:
Drive 1 (at least temporarily)
The system still boots into Windows Server but now Drive 3 is shown as "READY" and, of course, Drive 1 isn't listed.
It appears that this did no good.
The RAID 5 is still shown as "DEGRADED".
There are the 3 drives: 0,2,3
Drive 0 is shown as part of the RAID array
Drive 2 is shown as part of the RAID array.
Drive 3 is shown as READY.
In reading about this, there are mentions of OMSA fixing the problem when a new HD is introduced.
I have tried to install OMSA but there's been no success in doing that.
I believe I found the correct version:
http://www.dell.com/support/home/us/en/04/Drivers/DriversDetails?driverId=28KFC
I wonder if the Foundation edition is compatible?
I wonder if there isn't any other way to introduce a new hard drive into this RAID 5 array?
I can't afford to lose the operational hard drive so drastic measures aren't acceptable.
Still, I wonder if I can clone the "virtual"? drive and go to a single (1TB) hard drive on this system or maybe RAID 1?
I'll keep looking for solutions but figure someone on EE would have some quick insights and suggestions.