> Option 2:
> App Server and Postgres: Dual Xeon 5520 quad core with 12GB ram and
> 2x 146GB 15k RPM SAS (RAID1) disks
>
you didnt mention your dataset size, but i the second option would
be preferrable in most situations since it gives more of the os memory
for disc caching. 12 gb vs 4 gb for the host running pg