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20ms+ random access time for 500GB SATA drive

M

mav451

Senior member
Mobo: DFI NF4 Ultra-D; 6.86nF4 Chipset Drivers

Hey guys:

About two days ago, I installed a 500GB WD5000AAKS SATA2 drive. Immediately I noticed that it wasn't particularly responsive, as I expected. My suspicions were confirmed by HDTach which gave me a hideous 20.3ms random access time. Burst and read were "normal" at 203MB/s and 68MB/s respectively.

Any ideas on why it's so bad?

1) Installed nF4 SATA/IDE drivers. Did nothing.
2) Switched it from SATA port #4 to port #3. No change.
3) Changed Access Mode in BIOS from Auto to "Large". No change.

Maybe it's the cable? I'm using the sexy yellow one that came in the LanParty box...
 
Originally posted by: mav451
Mobo: DFI NF4 Ultra-D; 6.86nF4 Chipset Drivers

Hey guys:

About two days ago, I installed a 500GB WD5000AAKS SATA2 drive. Immediately I noticed that it wasn't particularly responsive, as I expected. My suspicions were confirmed by HDTach which gave me a hideous 20.3ms random access time. Burst and read were "normal" at 203MB/s and 68MB/s respectively.

Any ideas on why it's so bad?

1) Installed nF4 SATA/IDE drivers. Did nothing.
2) Switched it from SATA port #4 to port #3. No change.
3) Changed Access Mode in BIOS from Auto to "Large". No change.

Maybe it's the cable? I'm using the sexy yellow one that came in the LanParty box...
Click to expand...

I hope I don't have the asme problem.. I just ordered that drive
 
Hmm. I've heard several stories about slower-than-average access times on newish Maxtor HDs. I wonder if it could be related?
 
Not sure exactly what your problem is, but somthing certainly isn't right ... I have two 500gb WD5000AAKS's in RAID 1 & two 320gb Seagate 7200.10's also in RAID 1 on my main system & the WD's are slightly faster then the Seagates in this test & noticably more responsive going by feel.

WD5000AAKS: (RAID 1)
Burst: 192.8 mbs
CPU: 3%
RAT: 13.4 ms
Read: 71.4 mbs

7200.10: (RAID 1)
Burst: 196.6 mbs
CPU: 4%
RAT: 13.8 ms
Read: 60.8 mbs


Edit: Both arrays are running on an Asus/Nvidia 590-SLI RAID controller with the Nvidia storage drivers installed & were tested under XP-Pro - CPU is an A64 5000+ @ 2.8ghz.
 
Well I turned off command queuing earlier, but no, "Read Caching" is still on. I'll turn it off and restart.
 
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