A bitmap which represents VSANs starting from
VSAN id 2049 to VSAN id 4096. Discovery will be
carried out on all those VSANs for which the
corresponding bits are set to 1 in this object.
Note that if multiple managers set this object
one after the other, the discovery is carried
out on the union of the multiple requests. When
read, the value of this object is the union of
the in-progress discovery requests.