Which of me following is true statement?

An administrator removes a volume from an existing volume group which is part of replication. The system generates an error stating that it cannot create a replication session for the volume.
Why does removing the volume generate an error message?

During the discovery step of implementation, an unconfigured PowerStore is unavailable.
Which firewall ports must be open for a successful discovery?

A PowerStore T administrator discovers that only one port on each node is active and passing traffic. The other port is healthy and online, but total bandwidth is only half of what the customer expects.
Which two actions could resolve the issue? (Choose two.)

When does a Protection Pokey have to be removed from PowerStore storage resource? (Choose two.)