The only thing that looks suspect to me is your queue depth.
You'll notice that the actual queue depth being used for your
hard drive is 1:
> Default Tag Queue Depth: 8
>     Tagged Queue By Device array for aic7xxx host instance 0:
>       {255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255}
>     Actual queue depth per device for aic7xxx host instance 0:
>       {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}

I'd think it should be 8 however. The tape drive, being sequential, is
appropriate to have a depth of 1.

If I look at the same specs on my AIC-7860 (pretty similar to your card),
it looks like this at the same spot:

Default Tag Queue Depth: 8
    Tagged Queue By Device array for aic7xxx host instance 1:
    {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}
    Actual queue depth per device for aic7xxx host instance 1:
    {1,8,8,8,8,1,8,1,1,1,1,1,1,1,1,1}

This reflects my bus with HD's at ID's 1-4 and 6, a tape drive at
ID 0, and a DVD-ROM at 5. I've never had reason to complain about
drive performance with this configuration. The significance of your
255's as opposed to the 0's in my config is a mystery to me.

How to fix this is another matter. I would guess that it involves
going into the Adaptec BIOS setup utility which should require a CTRL-B
at some point in the boot process. Dig around in there and look for
something that might be forcing it to not assign higher queue depths
to HD's.

Hope that helps.

-- 
-Duane
[EMAIL PROTECTED]
--
I am having FUN...  I wonder if it's NET FUN or GROSS FUN?
I don't speak for HP, yadda, yadda, yadda.

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