On Fri, 2 Nov 2007 08:28:36 MST, os24u{at}wisdomtree.info wrote:

> Had planned on an ide usb external drive for backup with scsi as main
drive.  Should work ok?

Yes, that will work.  Even ide internal will work.  You have to
make sure you tell the bios that the scsi is the boot device
otherwise it may try to boot from ide.

>  Never considered that one could have 2 scsi controllers.   

I have had problems with slot position using 2 HBA's but they are
different manuf.  When I previously used 2 HBA of same manuf there
was not a problem.

>Could always acquire some more cheap scsi cards and experiment with
something other than Adaptec.   

I always buy scsi stuff on eBay and it's not very expensive,
especially the older scsi stuff.  I've had very good luck but I
suppose you could find a lemon.

> What performance improvement is expected?   

I can't say, I can only say what I've read, it's theory.  In the
past I had stuff on the same HBA and didn't really notice a
slowdown.  

>If I stick with ide hard drives could use the Adaptec 2940uw with the
correct adapter cable? 

I'm not sure if they make 68 pin to 25 pin, I know they make 50->25
and 68->50 but this info will be easy to research.  You should
check the availability before buying more stuff.  One place I've
bookmarked is http://www.cable4pc.com/

jon


 
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