You can expand the pool without pausing replication. It looks like you are only using 500GB out of 1,600GB so might not want to expand it just yet, wait until you get to 80-85% full. Keep in mind that it is very easy to expand a pool but you can't shrink it.
Hello,  I added an enclosure and drives to two VNXs for the Recover Point Journal pool. This is the first time since the installation that I am doing this and so I just wanted to ask this basic question. Can I expand the pool while replication is occurring or do I need to pause replication while expanding the pool?  Many thanks in advance! Admingirl
Can you expand the journal pool while replicating?