Reverse replication direction for some nodes

smp

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server1(tsm1) 8.1.10
stgpool tsm1container
stgpool tsm2container

server2(tsm2) 8.1.10
stgpool tsm1container
stgpool tsm2container

We are performing cross replication between tsm1 and tsm2.

tsm1 backup data goes to tsm1container on tsm1.
tsm1 replication data goes to tsm1container on tsm2.

tsm2 backup data goes to tsm2container on tsm2.
tsm2 replication data goes to tsm2container on tsm2.

We want to move some of the nodes that are currently backing up to tsm1 in tsm1container and have them back up to tsm2 in tsm1container.

Example:
node1, node2, node3, node4 are currently backing up to tsm1 tsm1container and are replicated to tsm2 tsm1container.

We want node1, node2 to continue backing up to tsm1 tsm1container and replicate to tsm2 tsm1container.
We want node3, node4 to now backup to tsm2 tsm1container and replicate to tsm1 tsm1container.

On tsm1:
rem replnode node3, node4
upd node node3, node4 replstate=enabled replmode=syncreceive

On tsm2:
rem replnode node3, node4
upd node node3, node4 replstate=enabled replmode=syncsend

Change the client options file for node3, node4 to point to tsm2.

Questions:
1. Will tsm2 be able to perform incremental backups for node3 and node4 and know what has been changed since the last backup which was performed on tsm1?

2. We are currently running protect stgpool tsm1container on tsm1. What do we need to do as far as protect stgpool tsm1container on tsm2 since it will now contain both replicated data from tsm1 and backup data from tsm2?

3. Replicate node * on tsm2 will now replicate nodes node3 and node4 because they have a replmode=syncsend. Are there any other considerations for replicating nodes from tsm2 to tsm1?

4. Do you have other suggestions to help us accomplish our goal?

Our goal is to change the backup server for some nodes while using all of the existing backup data and replication data for those nodes.
 
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