NFS or iSCSI

[Al-S]

This forum post may be useful:
http://forum.open-e.com/showthread.php?t=989

[Klug]

This is quite an old thread (2008).

A lot of things have changed since...
ESX 4 then 4.1 (then 4.1 U1) and its new iSCSI implementation.
DSS6 was VMware certified using Block IO while the thread you linked suggests using File IO

That's why I'm asking for a "current" advice, using current ESXi (now "VMware vSphere Hypervisor") and current DSS.