When configured in RAID 5, MS Server 2008 R2, the performance is so poor that the OS freezes during disk writes and users lose contact with a SQL database resulting in errors. Disk writes are approximately 3MB/S.
When configured RAID 1, disk writing of 300MB/s has been observed and no freezing occurs.
Is this normal and if so, why dont Dell inform users that RAID 5 is not recommmended. This has been subject to a support call and the motherboard was swapped out but to no effect.
Any comments?