# NFS Pools Overview

NFS Pools enable an HVM Cluster to use an NFS share as a datastore. The exact steps to configure the NFS share will depend on the storage system providing it, but this section will go over the requirements for creating a compatible share and for adding it to the HVM Cluster via the HPE Morpheus VM Essentials UI.

Administrators only need to set up the NFS server, export the desired directories with the proper permissions and options, and ensure the hosts are able to reach it. HPE Morpheus VM Essentials handles everything else, including mounting directories to the filesystem and handling datastore creation.

Compatible NFS shares must meet the following requirements:

- NFS version 3 or 4
- The share must allow read and write access
- The share must be configured with the `no-root-squash` export option

NOTE

NFS version 4 is only supported on HPE Morpheus VM Essentials version 8.0.13 and higher. When using the Migrations feature to move VMware VMs to HVM Clusters targeting an NFS Pool datastore, NFS version 4 must be used.

IMPORTANT

The `no-root-squash` export option is required but typically not set by default. When `no-root-squash` is not set, requests from the NFS client are mapped to an anonymous user on the NFS server, which will result in permissions errors that do not allow the NFS Pool to function correctly. You must set this export option in the `/etc/exports` config file or in a management interface depending on the NFS storage system being utilized.
