I recently connected a NAS to our virtual infrastruce and provisioned it with two NSF shares. I was able to successfully connect the shares to our 2 ESX 4 hosts and was able to browse the storage. I then created 2 vm's on the shares and all was good. Then, the knuckleheads in compliance thought it appropriate to blast out patches and the NAS (HP X1400 running Windows 2008r2 Storage Server) was rebooted. The NAS reconnected to the ESX hosts but when I try to power on the vm's I get a permission denied error. I did have a permission issue during the initital NFS Share setup which was resolved by adding the ESX hosts IP's into the NFS permissions. Nothing changed prior to the reboot so I'm clueless as to why I would get an permission denied or even where to start troubleshooting. All the hardware is on VMWare's HCL so I'm good there. I followed VMWare's best practice and used a dedicated switch configuration and on a seperate vlan. Any direction or help would be invaluable as I'm supposed to finish this phase of the project by Monday.