M #-: Update dependencies for stand-alone backup servers

Author: rsmontero

source/management_and_operations/backups/restic.rst

@@ -26,6 +26,7 @@ To setup the server perform the following steps:
 - Check that ``oneadmin`` can SSH access the server **without being prompt for a password** from the front-end and hosts.
 - Create the following folder in the backup server ``/var/lib/one/datastores``, change the ownership to ``oneadmin``.
 - Mount the storage volume in ``/var/lib/one/datastores``.
+- Finally make sure **rsync** and **qemu-img** commands are installed in the backup server.
 
 The following example showcases this setup using a dedicated 1.5T volume for backups:
 

source/management_and_operations/backups/rsync.rst

@@ -18,6 +18,7 @@ Perform the following steps:
 * Verify that the front-end and ALL hosts can SSH to the `RSYNC_HOST` as the `RSYNC_USER` without a password.
 * Create the folder `/var/lib/one/datastores` on the rsync server, and change ownership to the `RSYNC_USER`.
 * (Optional) Mount a storage volume to `/var/lib/one/datastores`, or to the Datastore ID directory under that.
+* Finally make sure **rsync** and **qemu-img** commands are installed in the backup server.
 
 Step 1. Create OpenNebula Datastore
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