It is time to refresh our MD3000i Dell SAN iSCSI. We had both 7.2K NLSAS and 15K SAS drives in it. This is the back end for 2 R710 Dell servers in a VMware 5.0 environment, running about 8 VMs including Small Business Server 2003 (to be upgraded to Win2012, Exchange 2010).
I have a quote for a Dell MD3820i iSCSI which is about twice as much as the MD3000i. I started thinking, do I really need a SAN? Can I use a fast NAS instead? Do NAS devices support VMFS?
I'm looking to upgrade to about 6-8 TB, from about 3 TB now.
I need some recommendations, both for the type of storage (NAS, SAN) and suggested vendors/models I may want to look at.
I don't want to spend money on something I don't really need. But I don't want performance issues either.
Thank you for your help and opinions.