New disk, Disk balancing and 2748 controllers

["Allen, Stuart" <sallen@xxxxxxxxxxxx>]

Hi all,

On my 720 i've currently got 20x 4gb drives, in two RAID arrays of 10.  Each
array runs off a 2741 controller (one in the system unit, one in the
expansion).

I have a question about how the system will balance the load across these
new disk.  I'll run a DSKBAL after installation; will this a) change the
load so that the % used is the same across all disk, or b) change the load
so that the K used is the same across all disk (ie the 8gb drives will have
half the % used of the others)?

Lastly, is anyone using the 2748 drive controller?  I have a bit of money
left over and am wondering if it'd be beneficial to swap it one of the
2741's. As i'd be using it in a 720 it would only work as Ultra SCSI rather
than Ultra-2, but would still have the 6.5x improvement in cache size.
Anyone got any opinions whether this alone would be worth it?

Thanks in advance,

Regards,
Stuart
                                     
Stuart Allen
European Systems Analyst
Fellowes

mailto:sallen@fellowes.com


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