I've stumbled upon a great presentation created by Nicholas Travers who works as a VMware Technology Consultant at EMC. The presentation is called "Storage Protocol Choices & Storage Best Practices for VMware ESX" and deals with storage considerations like:
How many VMs per LUN?- Standard LUN Size?
- NFS, RDM or VMFS?
- iSCSI, or FC?
- How do I scale iSCSI and NFS?
- Queue Depths?
- I need a 3TB LUN... How?
- Why do I need multi-pathing?
- I need SRM support... How?
The presentation can be downloaded from: Storage Protocol Choices & Storage Best Practices for VMware ESX
