NFS
==============================

**NFS (Network File System)** is a network file-sharing protocol that allows the nodes of an HPC cluster to access remote directories as if they were local.

It is served over a fast interconnection InfiniBand (IB).

NFS at the moment is available on cluster **XCRESCO** with only a scratch space per user.

- **SCRATCH space**, with high performances, large quota and a delete policy for older files and no backup. The file systems are local to ENEAGRID sites and they are not accessible directly over wide area. The environment variable name is ``$PFS_SCRATCH1`` in the cluster and the link in the HOME is ``~/PFS/tmp``. The file systems characteristics are:

.. list-table::
   :header-rows: 1
   :widths: 30 25 25

   * - CLUSTER
     - QUOTA
     - DELETE POLICY

   * - XCRESCO
     - Unlimited
     - Not implemented