The set of Real Device(s) that this Virtual Device
virtualizes in this VSAN.
The Real Devices are identified by the instance
identifier object cFcSdvVirtRealDevMapIndex in the
cFcSdvVirtRealDevMapTable.
If a particular bit has a value of '1', then the
corresponding Real Device (indicated by the position
of bit and represented by cFcSdvVirtRealDevMapIndex)
is mapped for virtualization for this Virtual Device.
The bit value of '0' indicates that particular Real
Device is not mapped for virtualization in this
Virtual Device.
This object is read-only; changes to its value
are made by the agent as and when associated
entries are created/deleted in the
cFcSdvVirtRealDevMapTable.
The default value is the zero length string.