OpenManage Server Administrator 8.3 on Centos has the issue with SNMP module. ( StorageManagement-MIB::virtualDiskDiskCachePolicy or .1.3.6.1.4.1.674.10893.1.20.140.1.1.26) shows INTEGER: 2 (Disabled) but it is Enabled on controller.
When Disk Cache Policy : Disabled
SNMP shows StorageManagement-MIB::virtualDiskDiskCachePolicy.1 = INTEGER: 4
Looks like the multiplication by 2.
My previous post about 8.2 version en.community.dell.com/.../19653595