> Anyone have any experiances with the Nike model 20 disc array.
> /snip
> So my question is:  Great we have the capacity for up to 176 GB in
> one raid 5 array......what does loading it up do to overall system
> performance?  Do we need to think about spending another 20k on
> another array?


Jim,
It depends how hard you are using it? Use a performance tool to measure IO and
see how close you are to 20 physical IO's/sec. (I will confirm this figure)
I would not use a Nike for my online systems, but put it in a private volume set
for archive purposes only. I also have this idea that you can use a second SP to
split the array into two SCSI buses, but have not been able to test this.
BTW, apparantly adding extra cache does not help performance.
Regards
Fred