Hi everyone,

We are trying to achiev a migration and replication of DD, here is our scenario:

Production:

- DD1: DD2500   OS:5.0.6.5

- 10GB ethernet x2 optical (DDBoost)

- 1GB cooper (administration)

- 8GB FC (VTL)

- VTL and DDBoost configured

- Netbackup 7.7

- 2 media servers that manages VTL and DDBOOSt, 1 media servers for other purposes and 1 master.

DR Site has a 1GB network and extended SAN over FC

we just bought a new DD2500 plus one shelf ES30 (not configured yet) with the same characteristics

- DD2: DD2500   OS:5.0.6.5

- 10GB ethernet x2 optical

- 1GB cooper

- 8GB FC

- VTL and DDBoost configured

- Netbackup 7.7

So, we want to:

1. Migrate all the data from DD1 to DD2.

2. Set DD2 + shelf for production enviroment

3. Take DD1 to our DR site

4. From this point, we want to set a native replication between DD. This means that all new backup created on DD2(production) have to be replicated/sync to the DD1 (DR site)

For the migration we have evaluated using Collection Replication or Mtree Replication . So, we already have read some posts here and guides and we have a couple of questions:

- Collection replicacion: Cannot be resynced, It cannot accept any other traffic - no backups, no Mtree replication etc.,Destination DD is read-only. Requires a downtime.

          If we use this option to migrate the data from DD1 to DD2, after the migration is finished no more new data can be written to DD2; is           there a way to change this so the DD2 will be my production DD and has to recieve new backups?

          As both DD are physically installed in the same rack, can we connect them directly each other?

             

- Mtree Replication: can be resynced, I understood that doesnt requiere a downtime.

          Will the Mtree replication copy the permissions and users (DDBoost user)?

          Once the replication is done, will we just have to change the hostname and IP's in order to get the Netbackup recognized this new           DD2 as nothing has changed?

          So, if we want to keep it up to date the new data has to be replicated/sync using Mtree replicataion again? if so, can we schedule           this or has to be done manually everytime we want to be sync?

          Do I have to format or erase the DD1 in order to recieve new replicated/sync data?

          As both DD are physically installed in the same rack, can we connect them directly each other?

 

Once the data is migrated we want to keep both DD synced

      

- Netbackup: Has to be done using Duplication option. As we understand it will take more time as the process expand the deduplicated data then it's copied to the destination and deduplicated there.

          So we are thinking using Netbackup as we have an Extended SAN, is this a good option or what can we do?

Many thanks!