low perfomance in a RAID 5 (Netserver tc3100)

[Diego Marquez]

HI !


I create a Raid 5 with 3 hard drives on this Server.
- 3 HD 36gb 10k ultra3
The creation is successfully, but the perfomance in mb/sec is so low !!

With a hard-drive test-speed application the read speed are:

MAXIMUM= 28794 kps
MINIMUM= 9876 kps
AVERAGE= 24274 kps

RANDOM ACCESS TIME= 8.8ms

2 HD are fujitsu and 1 seagate

This perfomance is correct ???

[CA845876]

This sounds low, but it depends on your benchmark, of course. If this is for a large sequential file access, then it should be in the region of 40-60 MB/sec.

Try taking a look at individual SCSI ID's, and make sure that they are not locked at a lower speed than ultra-160.