An infrastructure with a deduplication device for keeping most of the backups.

Recommended settings:

It is not recommended to keep your primary backups on a deduplicated storage, since these devices give poor results with restores involving random reads (like Instant VM recovery or files level restores). Instead you should have a non-deduplicated storage for keeping a short backup chain for fast restores and use BCJ to copy backups to deduplicated storage for long-term keeping.

Create a normal backup job in forward or forever forward incremental mode to keep 7-14 restore points on a non-deduplicated storage. Scheduled it to run every day in the evening.

Create BCJ with copy period of 1 day starting at 0.00. Set main chain retention to higher number of points (for example, 25). “Keep the following restore points for archival” (GFS retention) enabled and set to desired number of points (for example, 6 weeks, 12 months, 8 quarters and 3 years). “Read entire point” option enabled (to avoid synthetic operations on the storage). Health checks can be slow, so should be disabled.

With such configuration, the backup chain will have around 22 full backups and 30 increments