I'm using forever forward incremental jobs and I'm planning an upgrade from v8 to v9.5.
KB1956 (https://www.veeam.com/kb1956) recommends to enable it with Data Domain (the last bullet in the "Backup Mode" section)
but the Veaam best practice guide (https://bp.veeam.expert/job_configuration/backup_job.html#) recommends to disable it:
When to avoid? When using deduplication storage, it is recommended to disable the "Defragment and compact". As deduplication appliances are fragmented by their very nature, and have very poor support for random I/O workloads, the compacting feature will not enhance backup or restore performance.
What would be the recommended option? I'd be glad to hear some recommendations from the field about enabling this option with Data Domain
Shoud per-vm backup file chains be considered when deciding whether to enable compacting or not?