With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swFSDriveInfoStackEntry
Switch FS Drive Info Stack Entry
1.3.6.1.4.1.171.12.14.2.4.1
A list of information about each drive of devices stacked with this device.
Back to FILE-SYSTEM-MIB MIB page.
IPHost Network monitor allows you to monitor swFSDriveInfoStackEntry on D-Link device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring D-Link routers right now.