ESXi can access a designated NFS volume located on a NAS server, mount the volume, and use it for its storage needs. You can use NFS volumes to store and boot virtual machines in the same way that you use VMFS datastores.
ESXi supports the following storage capabilities on NFS volumes:
VMware DRS and VMware HA
ISO images, which are presented as CD-ROMs to virtual machines
Virtual machine snapshots
Virtual machines with large capacity virtual disks, or disks greater than 2TB.
When you work with NFS storage, the following considerations apply:
The maximum size of NFS datastores depends on the support that an NFS server provides. ESXi does not impose any limits on the NFS datastore size.
If you use non-ASCII characters to name datastores and virtual machines, make sure that the underlying NFS server offers internationalization support. If the server does not support international characters, use only ASCII characters, otherwise unpredictable failures might occur.