We have Exchange 2007 installed on a server in a RAID 1 configuration. We have some Exchange storage groups on a external enclosure (Dell MD1200) in a RAID 10 configuration. If one of the drives in the RAID 10 fails, I assume there is a short period of time until the mirrored drives takes over. During that short period of time, is there any chance of Exchange data being corrupted or any other issues with Exchange because Exchange is unable to read/write to the storage groups? The Exchange metabase would be on the C: drive (RAID 1) and the storage groups would be on the D: drive (RAID 10). Thanks.