We plan to migrate our Exchange servers to 2K3 and install HBA's on the servers to run Exchange off a Hitachi SAN.
We are planning our LUN sizes and array configs but are unsure of the performance benefits of having more disks in the array.
Is it better to have more disks in the array hence there will be more heads to read off? Is this more important than whether the disks are 10k or 15k?
Thanks in advance