Optimized duplication is used to copy data from an MSDP storage server to a Cloud Catalyst storage server (preferred use case)
This is the preferred Cloud Catalyst use case. In this scenario, the NetBackup environment contains two media servers: one is an MSDP storage server and one is a Cloud Catalyst storage server.
First, client data is backed up to the MSDP storage server, which is used for short-term data retention. In subsequent backups, the data is deduplicated. (See Figure: Flow of data from an MSDP storage server to a Cloud Catalyst storage server.)
A storage lifecycle policy then copies the data to a Cloud Catalyst storage server using optimized duplication. Data is uploaded from the Cloud Catalyst local cache to the cloud when an MSDP container file is full. This occurs soon after the backup or duplication job begins, but not immediately.
The cloud storage is used for long-term data retention. Deduplication makes it possible for subsequent jobs to transfer substantially less data to the cloud, depending on the deduplication rate.
This use case is preferred to backing up directly to a Cloud Catalyst storage server. (See Backups go directly to a Cloud Catalyst storage server.)
See Configuring a Cloud Catalyst storage server for deduplication to the cloud.