SNMP, Openmanage 3.6 & 3.7, OID Disk Storage not Working Correctly

I am attempting to use SNMP to poll the lDiskFreeDiskSpace OID on several Dell PE 4600 servers. These servers have two RAID sets, the first is a RAID5 split between a C: and E: drive and the other is a RAID1 containing the F: drive. When I use SNMP to poll the servers (which are running OM 3.7) I get responses from the C: and F: drives but not the E:. In fact, SNMP cannot even see the E: drive on the machine when I use GETIf.

Has anyone had similar SNMP problems with their servers? If so, what is the fix?

Thanks.

Hunter