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Promise SX4000 Slow!

M

mikecel79

Platinum Member
Here's the specs of the machine

Dell Precision 220
PIII 800 Mhz
512MB RDRAM
Promise FastTrak SX4000 IDE RAID Controller /w 128MB ECC PC100
(3) 40GB WD 8MB Cache drives

Now I setup a RAID 5 array (32KB stripe) with the 3 WD drives. Install went through ok but the performance of the drives is not what we expected. In Sandra Max3 I was getting something like 23,000KB/sec! That is slower than a single 80Gb 7200RPM drive! I was expecting at least double that, possibly more. We plan on using the machine as a temporary Exchange server while we do consolidation of our company.

Just to test the card I set it up as a RAID 0 array (32KB stripe) with all 3 drives and the performance does go up a bit (32,000kb/sec) but it's still really bad. Anyone have any ideas why it's so slow? I made sure I have the latest BIOS on the card and the latest drivers too.
 
So I decided to try another benchmark besides Sandra this time. Used this program called DriveBench that runs in Windows. Gave me much better results! More what I was expecting. Decided to run some tests using Exchange and a client simulator. The machine handled almost double the amount of clients with the RAID 5 config vs just a single drive. Seems like Sandra has a problem with the Promise SX4000 controller.
 
Originally posted by: shuttleteam
Seems like Sandra has a problem with the Promise SX4000 controller.
Click to expand...

Sandra has a problem with just about everything. Avoid its use, especially for disk benchmarking!

-DAK-
Click to expand...
Now all we have to do is wait for more AIDA32 benches! 🙂
 
Originally posted by: shuttleteam
Now all we have to do is wait for more AIDA32 benches!
Click to expand...

Cough (is there a spoon in my stomach?)

-DAK-
Click to expand...
I got a nice laugh from that response at least.
Though there are a few too many benchmarking programs out there,
 
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