RAID 6 Performance

[klau1]

I've gotten 5 WD 500GB RE3 RAID Edition harddrives in RAID 6.

is this performance level somewhere in the expected ballpark? The HW RAID Card is refurbished so I would like to know if it's working properly. Any suggestions are welcome

Environment:
OS: Windows Server 2003
Mobo: P5E VM DO /w ICH9R (fakeRAID)
HW RAID Controller: Adaptec 3805
RAM: 4GB

HARDDRIVEs:
5x Western Digital SATA RE3 500GB

RAID Configuration:
RAID 6



How does it look?

WHY is HD Tune indicating 70mB/s, so SLOW??

(ABOVE) THIS one really doesn't look right.....

is this performance level somewhere in the expected ballpark? The HW RAID Card is refurbished so I would like to know if it's working properly.

 

[sub.mesa]

Looks perfectly right; don't use raw I/O tests on a RAID array you will see improper results.

Use only benchmarks that run on the filesystem instead, like HDTune Pro File Benchmark, ATTO, CrystalDiskMark, AS SSD, SiSoftware Sandra and others as well.

Do not use HDTune, HDTach, IOmeter with too low queue depth; these will let only one or a few disks in your RAID work at the same time. Filesystems include optimizations like output buffering and read-ahead, to send multiple requests to the device/RAID for each file you are reading or writing.

Your CrystalDiskMark scores look plausible.