mrtg-ntap-probe is a probe for MRTG 2.x. It retrieves the disk and file (inode) utilization by volume or quota tree name from Network Appliance Filers and NetCache Appliances. You do not need to find the right OID, which might change over time as you add and/or remove volumes and quota trees. It now also retrieves the disk space saved by A-SIS de-duplication by volume name.