Data is obtained from Synology via SNMP protocol.
Note: DSM version 6.1 and older do not support capacity data.

We do not collect data for pools. The reason is:
There are two types of pools:

• "Better performance" = Single volume support
• "Higher flexibility" = Multiple volumes support

SNMP does not provide data for a single volume pool
We only have the "array_total" pool (sum all volumes).

Install Prerequisites

Skip that in case of Virtual Appliance.

• Linux RedHat / Rocky
  

  # umask 0022
  # yum install net-snmp
  # yum install net-snmp-utils
  # yum install net-snmp-perl
  

  Note you might need to allow optional repositories on RHEL to yum can find it

  # subscription-manager repos --list
  ...
  # subscription-manager repos --enable rhel-7-server-optional-rpms
  

  Use rhel-7-for-power-le-optional-rpms for Linux on Power etc ...
  
  
• Linux Debian/Ubuntu
  

  % umask 0022
  % apt-get install snmp libsnmp-perl snmp-mibs-downloader
  

  Assure that this line is commented out in /etc/snmp/snmp.conf

  #mibs :
  

  If apt-get does not find snmp-mibs-downloader package then enable contrib and non-free repositories.

Storage SNMP configuration

Open storage UI ➡Terminal & SNMP:

XorMon NG storage configuration

• Add storage into configuration from the UI:
  XorMon NG UI ➡ Settings icon ➡ Device ➡ Storage ➡ New ➡ Vendor:device ➡ Synology
  
  
• Run "Test" for configured storage device, it must show "OK"
  
  
• Wait about 1 hour, then reload the web browser, you should see it in XorMon NG UI