I recently worked on a performance turning for the backup solution with below components:
- EMC Avamar as the backup server at DC1 and DC2;
- Data Domain as the backup target storages at DC1 and DC2; and
- Backup datasets are replicated between DC1 and DC2.
The backup client is Avamar NDMP node at both sites. The 50TB ISILON CIFS shares can be backed up in 2 hours by Avamar through NDMP. However, the replication of the daily backup to peer DC can take more than 24 hours.