best RAID ?

[Videoyogi]

Hi,
What is best way to stripe 4 scsi discs u320 for best performance? I have adaptec 29320r controller and 36MB/s
in Toaster autoconfigure test. Is'nt that a bit slow ?

[wvp]

Paul has posted about this before.
The recommendation is to use Windows (2000 or XP) to stripe the drives. You will get the the fastest sustained rates this way.

[Paul Lara]

Originally posted by Videoyogi
I have adaptec 29320r controller and 36MB/s
in Toaster autoconfigure test. Is'nt that a bit slow ?

No.
It's a LOT slow. :(

Make sure all your drives are set as Dynamic before striping.

[Videoyogi]

Thanks :D . I'll try today. It looks that i have to set brain of my technican to "dynamic"

[Videoyogi]

Hmm. Autoconfigure shows still 36mb/s...
It,s 4 discs Seagate scsi u320 array on adaptec29320r
Do You think that could be problem of controller ?
Guys from my technical support just scratching heads...:confused:

[Paul Lara]

Originally posted by Videoyogi
Hmm. Autoconfigure shows still 36mb/s...
It,s 4 discs Seagate scsi u320 array on adaptec29320r
Do You think that could be problem of controller ?
Guys from my technical support just scratching heads...:confused:

When booting, does the SCSI bios indicate all 4 drives as 320 ?

A bad or improperly terminated cable can do this as well.

[SBowie]

Using an older 68pin ribbon cable (not the newer phenolic twisted pair) can also do this, but often it's simply a bent pin somewhere in the chain that causes such a problem.

[Videoyogi]

THANX for. all. Now is 210 Mb/s. Of course, someone connected the scsi cable to wrong port ( trehe are two if i understood good )
So man's mistake.

Regards

[goodrichm]

Found these suggestions earlier on a post in this discussion forum but can't find them anymore:

1) If the hard drives should be fast enough (SCSI ultra-160) and the drives are still not performing as they should...

-what numbers do you get running disktest.exe on the video raid?
- Make sure the System page file is NOT on the video stripe
- Set page file size to 4MB less than physical RAM
- ensure you're running Windows 200 Service Pack 2

2) Make sure your striped set is not using Win2K's Indexing Service...

-Go to "My Computer" and right click on the drives. Select "Properties" then "General" tab. Make sure there's no check mark for "Allow indexing service..."


Mark G