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Which TCP/UDP port is being blocked by the firewall?

Two new EMC VNX were implemented at a customer’s primary and backup sites. Each VNX has
a single active Data Mover. Multiple VDMs are configured on both VNX, each with a CIFS file
system. The default mapping solution was implemented in a primary-secondary configuration.
The customer completes a security audit and then observes new user authentication fails on the
secondary site. Which TCP/UDP port is being blocked by the firewall?

Why does the customer need to rework this solution?

A customer has an existing DR solution using SRDF between Symmetrix at their source and
backup sites. TimeFinder Clones are also used at the backup site. A new VNX is installed at the
backup site. The customer tries to use Incremental SAN Copy to copy data updates from the
TimeFinder Clone to live web server LUNs on the VNX. The customer reports they are not able to
configure the SAN Copy session. Why does the customer need to rework this solution?