The diagram below illustrates the main components and processes within the backup infrastructure when tape support is implemented in Veeam Backup & Replication:
For designing tape backups consider the following requirements:
- You must have Veeam Backup & Replication Enterprise license or higher installed.
- You can’t backup directly to tape but you need to have at least one pre-configured (primary) backup job or backup copy job to create backups which can be archived to tape afterwards.
- The primary backup job must have at least 2 restore points on disk.
- The primary backup copy job must have at least 4 restore points on disk.
You can also only archive full (VBK) and incremental (VIB) backups to tape. Other backup types like Reverse Incremental (VRB), log backups and application backups can’t be archived to tape.
For the highest throughput, enabling parallel processing for the Backup to Tape is recommended. You need to size the servers and storage connections accordingly. It can be helpful to create multiple partitions with 2-4 tape drives and add these partitions to different tape servers. Adding these libraries to the media pool and enabling parallel processing will distribute the load across multiple drives and tape servers.
Perform a POC to test throughput of tape and disk. If you have no opportunity to test speed, assume that the lowest speed for backup to tape jobs with LTO5/6 is 50MB/s as a conservative estimate. We highly recommend to do a POC to evaluate real throughput to avoid additional hardware costs.