Identifying the hardware or virtualised resource to satisfy your workload isn’t straightforward, different data access patterns requires different resourcing, for example 1,000 users on an Online Transaction Processing (OLTP) workload may require less...
This has just drove me mad for half an hour; I've just took delivery of a new machine I'm building for my client - 2 x 146GB SAS in RAID 1 and 4 x 300GB SAS in RAID 10 - going through the DELL install I eventually get to the Windows 2008 x64 Server...