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Adaptec U160 tuning



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Folks,
I'm running a SCSI rig with one of the Adaptec U160 cards -- uses the aic7xxx 
driver, I think (I'm at work; the box is at home).  Each device is running at 
half its possible speed, though: my 80MB/sec drives all show up in boot logs 
as being initialized at 40MB/sec; even my CD-R is initializing at a transfer 
rate of 10MB/sec.  I've got the correct cabling and everything works great, 
I'd just like to wring every ounce of speed out of these drives.

Best,
d.
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