Slow writing with Raid 0 on KD7-Raid

[Leif]

I�m having problems setting up WinXP on my stripeset ( I use two seagate ST340014A, ATA100 40Gb). I use the 2.32 HPT drivers when I install XP and my motherboard has the latest bios. After installing XP on my striped disks I can�t get any writing speed on the stripe! I can read with pretty good speed but when I write its benchmark is slower than my old ATA33 drive! Anyone seen this problem before? I have a AMD Barton XP2500+ and 512 Ram!

Regards
Leif

 

[TomG]

what size stripe block did you create?

 

[Doug G.]

In article <DxGNa.19277$>,
says...

I�m having problems setting up WinXP on my stripeset ( I use two seagate ST340014A, ATA100 40Gb). I use the 2.32 HPT drivers when I install XP and my motherboard has the latest bios. After installing XP on my striped disks I can�t get any writing speed on the stripe! I can read with pretty good speed but when I write its benchmark is slower than my old ATA33 drive! Anyone seen this problem before? I have a AMD Barton XP2500+ and 512 Ram!

Regards
Leif

Try disabling 'CPU Disconnect Function' in the BIOS.

Doug

 

[Leif]

"TomG" skrev i meddelandet

what size stripe block did you create?

64K

--

Thomas Geery
Network+ certified

ftp://geerynet.d2g.com
ftp://68.98.180.8 Abit Mirror <----- Cable modem IP This IP is dynamic so it *could* change!... over 113,000 FTP users served!
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...

The strange thing is I installed a patch from www.viaarena.com wich supposed to increase performance on raid systems. The instructions told specificly that it was not for my chipset. But i installed it anyway! Now I only have slightly worse benchmark than my WD ATA100 80 Gb drive! Can it be some kind of driver problem?

 

[Leif]

"Doug G." skrev i meddelandet

In article <DxGNa.19277$>,
says...
I�m having problems setting up WinXP on my stripeset ( I use two seagate ST340014A, ATA100 40Gb).
I use the 2.32 HPT drivers when I install XP and my motherboard has the latest bios.
After installing XP on my striped disks I can�t get any writing speed on the stripe! I can read with pretty good speed but when I write its benchmark is slower than my old ATA33 drive!
Anyone seen this problem before?
I have a AMD Barton XP2500+ and 512 Ram!

Regards
Leif

Try disabling 'CPU Disconnect Function' in the BIOS.

Would that affect stripe speed that much? I mean from slower than ATA33 to raid performance? I�ll give it a go!! As i reply to TomG I installed a patch from via......! Strange!

Thanks

Doug

 

[TomG]

you may want to try 16K as that is the size that most of the folks I worked with here in the group, including myself, reported the best results with.

 

[Leif]

"TomG" skrev i meddelandet

you may want to try 16K as that is the size that most of the folks I worked with here in the group, including myself, reported the best results with.

Ok! Thanks for the advice! I heard somewhere that raid manufacturers themself advise to use 64K (thats default when in bios setup). How should I format NTFS then? Do I use 16K clusters? Could the 64K choice explain why my results are similar with a "normal" ATA100 drive?

Leif

--

Thomas Geery
Network+ certified

ftp://geerynet.d2g.com
ftp://68.98.180.8 Abit Mirror <----- Cable modem IP
This IP is dynamic so it *could* change!...
over 113,000 FTP users served!
^^^^^^^

... speed on
the
stripe! I can read with pretty good speed but when I write its benchmark is
slower than my old ATA33 drive!
Anyone seen this problem before?
I have a AMD Barton XP2500+ and 512 Ram!

Regards
Leif

... specificly that it was not for my chipset. But i installed it anyway! Now I only have slightly worse benchmark than my WD ATA100 80 Gb drive! Can it be some kind of driver problem?

 

[TomG]

I would have both drives on 80 conductor cables jumpered as Cable Select (CS or CSEL) with one drive on one channel and the other drive on the other channel. both drive would need to be on the end of the cable in this situation with the blue end of the cable on the mobo.

as for the NTFS cluster size, there are a lot of opinions out there on the best way to set that up and I'll be honest, I just let the OS format the partition and did not attempt to set the size. I'm not saying that is the best way to go but I did not have any issues as a result of going that way.

 

[AJ]

Are we sure it's nothing simple such as the o/s has not enabled DMA for the drives and is using PIO?

"Leif" wrote:

"Doug G." skrev i meddelandet

In article <DxGNa.19277$>,
says...
I�m having problems setting up WinXP on my stripeset ( I use two

seagate

ST340014A, ATA100 40Gb).
I use the 2.32 HPT drivers when I install XP and my motherboard has the latest bios.
After installing XP on my striped disks I can�t get any writing speed on the
stripe! I can read with pretty good speed but when I write its benchmark is
slower than my old ATA33 drive!
Anyone seen this problem before?
I have a AMD Barton XP2500+ and 512 Ram!

Regards
Leif

Try disabling 'CPU Disconnect Function' in the BIOS.

Would that affect stripe speed that much? I mean from slower than ATA33 to raid performance? I�ll give it a go!! ...

 

[TomG]

if he is using a Highpoint controller, it is viewed as a SCSI controller and you do not get the option for DMA mode as it is always in DMA mode.

 

[Doug G.]

In article <dgRNa.19308$>,
says...

"Doug G." skrev i meddelandet

In article <DxGNa.19277$>,
says...
I�m having problems setting up WinXP on my stripeset ( I use two seagate ST340014A, ATA100 40Gb).
I use the 2.32 HPT drivers when I install XP and my motherboard has the latest bios.
After installing XP on my striped disks I can�t get any writing speed on the stripe! I can read with pretty good speed but when I write its benchmark is ...

It affected file copy speed drastically on two different KD7 Raid boards for me. Also as Tom said, you will get better benchmarks with 16k blocks.

Doug

 

[Leif]

"TomG" skrev i meddelandet

I would have both drives on 80 conductor cables jumpered as Cable Select (CS or CSEL) with one drive on one channel and the other drive on the other channel. both drive would need to be on the end of the cable in this situation with the blue end of the cable on the mobo.

That�s how i did it!

as for the NTFS cluster size, there are a lot of opinions out there on the best way to set that up and I'll be honest, I just let the OS format the partition and did not attempt to set the size. I'm not saying that is the best way to go but I did not have any issues as a result of going that

way.

As I said I use 64 K block in the raid. For c: I use NTFS default 4k but another partition on the stripeset I use NTFS 32k. The 32k is much faster reading an aprox 450 Mb file, than the c:. What really bothers me is that i got a better performance installing the VIA raid enhancement patch, wich specificly said it was NOT for my chipset! That really confuses me!

Tomorrow I reformat 16k and do a new benchmark!

--

Thomas Geery
Network+ certified

ftp://geerynet.d2g.com
ftp://68.98.180.8 Abit Mirror <----- Cable modem IP
This IP is dynamic so it *could* change!...
over 113,000 FTP users served!
^^^^^^^

... only have
slightly worse benchmark than my WD ATA100 80 Gb drive! Can it be some kind
of driver problem?

 

[Leif]

"AJ" skrev i meddelandet

Are we sure it's nothing simple such as the o/s has not enabled DMA for the drives and is using PIO?

Well, the raid bios setup say its ATA100 drives!

in message

"Doug G." skrev i meddelandet

In article <DxGNa.19277$>,
says...
I�m having problems setting up WinXP on my stripeset ( I use two seagate ST340014A, ATA100 40Gb).
I use the 2.32 HPT drivers when I install XP and my motherboard has the latest bios.
After installing XP on my striped disks I can�t get any writing speed on
the
stripe! I can read with pretty good speed but when I write its benchmark is
slower than my old ATA33 drive!
Anyone seen this problem before?
I have a AMD Barton XP2500+ and 512 Ram!

Regards
Leif

... to raid performance? I�ll give it a go!!
As i reply to TomG I installed a patch from via......! Strange!

Thanks

Doug

 

[Leif]

"Doug G." skrev i meddelandet

In article <dgRNa.19308$>,
says...

"Doug G." skrev i meddelandet

In article <DxGNa.19277$>,
says...
I�m having problems setting up WinXP on my stripeset ( I use two

seagate

ST340014A, ATA100 40Gb).
I use the 2.32 HPT drivers when I install XP and my motherboard has the latest bios.
After installing XP on my striped disks I can�t get any writing speed on the
stripe! I can read with pretty good speed but when I write its benchmark is
slower than my old ATA33 drive!
Anyone seen this problem before?
I have a AMD Barton XP2500+ and 512 Ram!

Regards
Leif

Try disabling 'CPU Disconnect Function' in the BIOS.

Would that affect stripe speed that much? I mean from slower than ATA33 to raid performance? I�ll give it a go!!
As i reply to TomG I installed a patch from via......! Strange!

It affected file copy speed drastically on two different KD7 Raid boards for me. Also as Tom said, you will get better benchmarks with 16k blocks.

Doug

Doing it tomorrow! Bye XP for the fourth time!