A customer has two IP Replicated VNX systems: VNXA is the Primary system; VNXB is the DR
system. VNXA is configured with VDMs containing CIFS servers, has secmap cache disabled, and
runs a primary Usermapper. VNXB is configured as a DR target system and runs a secondary
Usermapper.
During failover testing, VNXA is failed over and shut down to simulate a site outage. The small
number of Linux users that access the CIFS data via NFS find that they no longer have the same
permissions as when accessing from the primary site. Additionally, the UID ownership of many
files has changed.
What could be the cause of the change in permissions?

A.
LDAP requires re-configuration and resynchronization when failing over sites.

B.
The ID mappings of the Primary and secondary Usermapper do not match.

C.
The DR site must be promoted to become a primary Usermapper on failover

D.
DNS has not yet re-synchronized to reflect the new CIFS server addresses.