source: Extensions/NFSen.md # NFSen > The installation of NFSen is out of scope for this document / LibreNMS #### Configuration The following is the configuration that can be used: ```php $config['nfsen_enable'] = 1; $config['nfsen_split_char'] = "_"; $config['nfsen_rrds'] = "/var/nfsen/profiles-stat/live/"; $config['nfsen_suffix'] = "_yourdomain_com"; ``` Set `$config['nfsen_enable'] = 1;` to enable NFSen support. `$config['nfsen_rrds']` This value tells us where your NFSen rrd files live. This can also be an array to specify more directories like: ```php $config['nfsen_rrds'][] = '/var/nfsen/profiles-stat/sitea/'; $config['nfsen_rrds'][] = '/var/nfsen/profiles-stat/siteb/'; ``` `$config['nfsen_split_char']` This value tells us what to replace the full stops `.` in the devices hostname with. `$config['nfsen_suffix']` This value will be removed from the domain name and can be useful if your rrd files are something like `host1.rrd` but your device hostname is `domain.host1.rrd`. You can then set $config['nfsen_suffix'] = 'domain'; You should a new tab for the device called Nfsen.