====== Create Opnsense Backup Image ======

First, need to enable NFS Client:

Create/Add line to rc.conf
<code>nano /etc/rc.conf</code>
This line:
<code>nfs_client_enable="YES"</code>

 Then enable and start NFS Client
<code>service nfsclient enable</code>
<code>service nfsclient start</code>

Now add mount point to /etc/fstab
<code>nano /etc/fstab</code>

 For example:
<code>192.168.1.101:/mnt/nfs-server  /mnt/nfs-client   nfs   rw   0   0</code>

** NFS Share may become unable after router restart and may won't start so better to mount it manually!**

<code>mount -t nfs 192.168.1.101:/mnt/nfs-server  /mnt/nfs-client</code>

**Now find system disk:**
<code>geom disk list</code>

 And start to clone it.

<code>dd if=/dev/nda0 of=/mnt/nfs-client/opnsense.img bs=16k status=progress</code>