The number of physical spindles do make a difference. Also, the number of
devices on your SCSI card makes a big difference (SE no more than 5, FW no
more than 10, YMMY.)  Also, BUY MORE MEMORY! The less swapping you do the
better off you are and too many systems are memory starved, even in these
days of cheap memory.



>The new disk configuration estimate right now will probably be
>increased to 20 to 25g.  My question is with 9g drives available, 3
>of these new drives will fulfill my needs, can I get the same IO
>performance as I do with 7 2g drives?  Does having 6 4g drives
>produce more IO/sec (evenly Balanced) than 3 9g drives?  With these
>high speed access drives does this issue even an issue anymore with
>the amount of caching done within the operating system?  Does the
>number of physical spindles make a difference anymore with todays
>disk technology?  Thanks in advance for your comments.
>
>Kimber Renk
>
>