In order to assist customers in designing their storage layout for Exchange 2007, we have put together a calculator that focuses on driving the storage requirements (I/O performance and capacity) and what the optimal LUN layout should be based on a set of input factors.

The calculator uses all the recommendations outlined in the following articles, and thus we recommend you read them before utilizing the calculator:

The calculator is broken out into the following sections (worksheets):

This post references http://blogs.technet.com/b/exchange/archive/2007/01/15/3397742.aspx