New Atlas 10k III not breaking over 40MB/sec...**UPDATE** WinXP Write performance issues

NFS4

No Lifer
Oct 9, 1999
72,636
46
91
I just installed my new 18.4GB Maxtor Atlas 10k III u160 SCSI drive. I'm using a UW2 controller (LSI Sym21002) so it should burst up to 80MB/s. But checking under HD Tach, I'm only hitting 33MB/sec...WTF???

I'm running Windows XP BTW.

I've installed all the latest VIA 4-in-1 drivers and the PCI Latency patch from VIA's website.
 

sharkeeper

Lifer
Jan 13, 2001
10,886
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Make sure disk(s) are recognised as 80MB/S (U2W) devices by HBA.

Make sure termination is correct and proper cables are used.

You should see around ~70 MB/S burst in HD Tach with a drive running in U2W mode.

Cheers!
 

BuckNaked

Diamond Member
Oct 9, 1999
4,211
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NFS4,
You better check this thread... link... Seems there is a problem with SCSI and WinXP that MS seems to acknowledge as an OS problem...

I posted a link to a discussion over at the storagereview website that is a pretty long read, but prett informative...

Dave
 

NFS4

No Lifer
Oct 9, 1999
72,636
46
91
I fixed it...I had the damn cable on Port A...it should have been on Port B:eek:

 

BD231

Lifer
Feb 26, 2001
10,568
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I fixed it...I had the damn cable on Port A...it should have been on Port B

lol, oop's
 

Sundog

Lifer
Nov 20, 2000
12,342
1
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<< I fixed it...I had the damn cable on Port A...it should have been on Port B >>


LOL :) Glad you figured it out.
 

NFS4

No Lifer
Oct 9, 1999
72,636
46
91
Well, I checked my performance, and I'm getting low numbers like everyone else :(

Guess I have to read the whole thread for a solution.
 

Barnaby W. Füi

Elite Member
Aug 14, 2001
12,343
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<< Well, I checked my performance, and I'm getting low numbers like everyone else :(

Guess I have to read the whole thread for a solution.
>>


abandon xp!! better yet abandon windows!! ;)
 

Blackberry Junkie

Senior member
Nov 29, 1999
540
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NFS4, your u2w barely can beat today's latest ATA100 hard drive when it comes to transfer files except u2w can take over ata100 anyday in read access and cpu usage.

When I upgraded from u2w to u160. big difference in file transfer performance.

I will quote from your signature - Of course, that's just my opinion; I could be wrong.
 

NFS4

No Lifer
Oct 9, 1999
72,636
46
91


<< NFS4, your u2w barely can beat today's latest ATA100 hard drive when it comes to transfer files except u2w can take over ata100 anyday in read access and cpu usage.

When I upgraded from u2w to u160. big difference in file transfer performance.

I will quote from your signature - Of course, that's just my opinion; I could be wrong.
>>



UW2 maxes out at 80MB/s
U160 maxes out at 160MB/s

u160 is overkill for a single drive.
 

GoSharks

Diamond Member
Nov 29, 1999
3,053
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i believe that the current fix as mentioned in the thread is to convert the drive into a dynamic disk with the disk management control panel.... not sure if that works for your boot drive though...
 

NFS4

No Lifer
Oct 9, 1999
72,636
46
91


<< i believe that the current fix as mentioned in the thread is to convert the drive into a dynamic disk with the disk management control panel.... not sure if that works for your boot drive though... >>


What does a dynamic disk do??:Q You mean like RAID or something?
 

rockhard

Golden Member
Nov 7, 1999
1,633
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NFS4 - It maybe worth considering getting a U160 controller in the future.
My Atlas III sustains well below U2W but peaks are off the scale so you are probably limiting the peak performance with your U2W controller.
I may be talking complete twoddle though ;)
Im sure someone will put me right if i am.
 

NFS4

No Lifer
Oct 9, 1999
72,636
46
91


<< NFS4 - It maybe worth considering getting a U160 controller in the future.
My Atlas III sustains well below U2W but peaks are off the scale so you are probably limiting the peak performance with your U2W controller.
I may be talking complete twoddle though ;)
Im sure someone will put me right if i am.
>>


I may consider it in the future, but 80MB/s is just fine for now :D
 

Viper22

Golden Member
Oct 9, 1999
1,607
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Anyone have a link to the VIA Latency patch? ive got an IWill KK266-R motherboard and an Adaptec 39160 SCSI Controller. My Cheetah X15 drive only hits 52MB/sec burst using HD Tach. Thanks.

Viper22
 

NFS4

No Lifer
Oct 9, 1999
72,636
46
91


<< Anyone have a link to the VIA Latency patch? ive got an IWill KK266-R motherboard and an Adaptec 39160 SCSI Controller. My Cheetah X15 drive only hits 52MB/sec burst using HD Tach. Thanks.

Viper22
>>


My Atlas 10k III is only bursting 55MB/s in Windows XP in HDTach on a UW2 controller. If you're running Windows XP, that's probably your problem. As far as the PCI Latency patch, you can get it here under RAID performance patch:

http://www.viaarena.com/?PageID=66
 

Sir Fredrick

Guest
Oct 14, 1999
4,375
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NFS4...I remember a thread very long ago (very long thread too) in which you argued against SCSI. I guess you've seen the light. ;)
 

NFS4

No Lifer
Oct 9, 1999
72,636
46
91


<< NFS4...I remember a thread very long ago (very long thread too) in which you argued against SCSI. I guess you've seen the light. ;) >>


Opinions change :D
 

NFS4

No Lifer
Oct 9, 1999
72,636
46
91
As far as Windows XP performance goes, it's not as fast as it should be. I've been reading the thread over at StorageReview, and write performance across the board for everyone in Windows XP compared to Windows 2000 is PITIFUL:

http://forums.storagereview.net/viewtopic.php?t=1758&postdays=0&postorder=&start=0

The last poster in the thread was kind enough to post Read/Write performance of his 2 Quantum Atlas 10K II TY184LDDD6 drives on a Adaptec 29160 controller.

Read performance (comparable to Windows 2000)
http://neilpeartrush.tripod.com/atto/attopics/page1.html

Write performance (pure crap compared to Windows 2000)
http://neilpeartrush.tripod.com/atto/attopics/page2.html


I'd like to load back on Windows 2000 and test this for myself, but I'm so used to Windows XP now that I can't go back:eek: