MIB-II (IF-MIB): Basic description of the monitored system, such as the system name, uptime, and network interfaces. For details of this MIB, refer to http://www.net-snmp.org/docs/mibs/interfaces.html and http://www.net-snmp.org/docs/mibs/ifMIBObjects.html.
HOST-RESOURCES-MIB: Computer management information, hardware and software configuration, such as information regarding system initialization, processes, storage, memory, processors, and devices. For details of this MIB, refer to http://www.net-snmp.org/docs/mibs/host.html.
UCD-SNMP-MIB: system performance data, such as system statistics and performance. For details of this MIB, refer to http://www.net-snmp.org/docs/mibs/ucdavis.html.
For an H-Series edge filer running on an HPE ProLiant server, you can use the System Insight Manager MIBs to monitor the HPE ProLiant server: https://support.hpe.com/hpsc/swd/public/detail?swItemId=MTX_53293d026fb147958b223069b6.
The MIBs are stored on the SNMP server on the gateway. You can monitor the gateway MIBs using a management tool, such as the tool from https://www.paessler.com/.