Desert Schools Credit Union is about to install an EMC Summetrix storage
system and I would like to get some configuration recommendations from those
of you who have been down this path.

Summit, our software provider, recommends spreading our databases over many
disk drives to maximize the potential for I/O concurrency.  Even though the
logical disks configured on the 3000 don't directly correspond to spindles
on the Summetrix, I speculate that this is still good practice so that the
3000 can maximize the number of requests passed to the storage array.  Is
this correct?

As I understand it, each FWD SCSI controller can be configured with up to 15
target IDs and each ID may be configured with up to 16 logical devices.  Is
it better to use a few SCSI IDs with lots of logical devices, or use lots of
IDs with fewer devices?

Any other insights would be greatly appreciated.

Thomas M. Root <[log in to unmask]>
Desert Schools Federal Credit Union
Phoenix, AZ

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