
398 5.5 Storage Optimization for Exchange 2003
is therefore necessary to get back to basic calculations for which a request
rate has to be satisfied from the Microsoft Exchange server to the storage
back-end components, regardless of whether they are locally, networked, or
SAN attached.
A more modern and accurate approach consists of evaluating the I/O
workload generated by a possibly representative user set and working out,
using simple arithmetic, the needed spindle count. In the monitoring chap-
ter, we describe which parameters to monitor and how to determine proper
values, but for this particular section, let’s assume the following case:
1 × server ...