What is the possible reason for this issue?

After configuring Smart DR, an administrator is unable see the policy in the Policies tab. The administrator has confirmed that all FSVMs are able to connect to Prism Central via port 9440 bidirectional.

What is the possible reason for this issue?
A . The primary and recovery file servers do not have the same protocols.
B . Port 7575 should be open for all External/Client IPS of FSVMs on the Source and Target cluster.
C . The primary and recovery file servers do not have the same version.
D . Port 7575 should be open for all Internal/Storage IPs of FSVMs on the Source and Target.

Answer: B

Explanation:

Smart DR is a feature that allows share-level replication between active file server instances for disaster recovery. To configure Smart DR, one of the prerequisites is to open TCP port 7575 for all External/Client IPs of FSVMs on the Source and Target cluster. This port is used for communication between the FSVMs and Prism Central. If this port is not open, Smart DR policies will not be visible in the Policies tab in Prism Central.

Reference: Nutanix Files Administration Guide, page 79; Nutanix Files Solution Guide, page 9