Intel Matrix Storage Manager 8.9 with ICH9 Raid Controller.
Set to Raid 1.
Randomly, sometimes several times per week, will report "Raid Drive degraded"
Can be on EITHER Port 0 or Port 1 - no particular pattern here.
Right click the bad drive, select "Mark as Normal"
Mirroring rebuilds in about an hour. All is well till next time.
First go around I was faked into believing that one of the drives failed, but I don't think so.
Rebuild works fine. Next occurance may be other drive. Both failing same week - astronomical odds.
What is Storage Manager seeing that makes it think a drive is bad? Can't find a log...
I experienced it yesterday and today and did not yet know about "mark as normal". After verifying my drive as OK using manufacturer's diagnostic tool, I started to rebuild and then the other drive dropped out when the rebuild was 97% complete. So now I think this array is completely hosed.
My RAID shows degraded about once a month. I delete it and then rebuild it. Took me quite a while to figure out how to do that since the nvidia control panel software didn't always show the storage component.
Having to rebuild has finally gotten to the point that I may just skip the RAID and backup more frequently. I use an online backup service so I should be OK if I do have a drive failure.
I'm curious if you ever found a solution to the degradation problem or if you just build whenever the status shows degraded.