I have a server with 2008 SBS installed on a mirrored pair raid 1 configuration; I also have an identical test server.
When I restore the test server from a backup, the server runs incredibly slow. Booting up takes more than 2 hours, logging in takes over 40 mins and opening "my computer" takes 20 minutes.
When the unit is booting up the status of the raid setup says "initializing". When I unplugged one of the hard drives, the status changed to "degraded", but the server acted normally: booted in about 3 minutes, logged in less than a minute, and opened programs quickly once logged in.
I assume that the problem is that the restore is messing with the raid setup somehow and after restoring the OS the mirrored pair needs to be rebuilt.
Is this normal for raid 1 configs?
Does the same thing happen on raid arrays using more disks?
Does anyone have any ideas how to prevent this problem or should I change my emergency restore procedures to include unplugging one of the hard drives for the day and then plugging it back in before leaving for the day and allowing the array to rebuild overnight? Losing one days worth of emails and SharePoint activity (if that single drive should fail) would cause far less problems then the server being almost useless for most of a day.