I have a Dell PowerEdge 2900 with a Perc 5/i disk controller. I have two RAIDS configured:
RAID 1 = 2 x 15K SAS Drives (36GB/Each)
RAID 5 = 6 x 10K SAS Drives (146GB/Each)
I ran the DiskMark and the performance of the RAID5 seems reasonable, but the performance of the RAID1 seems rather low. Does anyone agree that the performance of the RAID1 should be better?
RAID1 DiskMark = 626
RAID5 DiskMark = 2754
I know that mirroring had extra overhead and probably won't be as fast as a RAID5 with 6 disks, but these are 15K drives so I would expect better than 626. I ran numerous tests and this is the average, though each test was within a few points of each other.