Adaptec 2400A Speed on WindowsXP

[Struthio]

hello,

I recently bought Adaptec 2400A IDE RAID Controller, and I have
troubles with it. I saw that many users written on Internet about
this, but i did not seen any solution that is why i am asking.

I have very low transfer speeds form RAID it is about (25 MB/s). I
Have 3 HDD WD800JB 8MB 7200RPM, when i connect drive to normal
Motherboard controller i get transfers about 40MB/s, but when i
connect 3 the same drives to 2400A controller and set RAID 0 for them
i get only 20MB/s Why is that ?

I have the newest available bios from Adaptec website, rest of
configuration

System:
P4 1.8 GHz
ASUS P4B266 Motherboard

RAID 0:
3x WD800JB HDD, connected by cables shipped with controller.
stripe set to 128kb


I read all Knowledge Base on Adaptec page and WDC. Tried all solutions
i can find there with no result. Please help me.

Kind Regards
Jarek

 

[Guest]

WDC IDE hds will only run at 100mb/s max.However to youre problem,you
dont mention a "RAID configuration",is one set up with the 3hds,usually for
pcs,RAID is configured with 2 hds,not 3.More than 2 hds,usually would be
found
on a servers board,you might try 2.Also,if adaptec was added after xp was
installed,you should try reinstalling xp,use the F6 option,add
drivers,install xp.
Also,is RAID configured in the BIOS.....From what you wrote,i doubt RAID is
actually running,you should have the RAID utility set-up,displayed at every
re-
start/start up,another item you did not mention...

 

[DL]

If other users complain about low transfer when using raid striping (raid 0)
with this controller then the only help you are likely to get is from
Adaptec, or their help forums.
It is a discontinued product, you have the latest Firmware & Drivers?
http://www.adaptec.com/en-US/products/_eol/ata_raid/ata_raid/AAR-2400A/

 

[Struthio]

well Adaptec 2400A supports up to 4 drives! So i do not see why i
should not put 3 HDD in array. I configured RAID 0 in Adpatec BIOS
(SMOR). And information that Adapted RAID is available, is shown every
boot (while POST).

 

[Struthio]

As i ahve written in first post i have lastest BIOS. I have also
lastest Drivers (tested with Microsoft and Adaptec Drivers)

 

[DL]

Drivers are not the same as firmware.

Then you are stuffed - perhaps thats why Adaptec discontinued the product,
some time ago