Retention Policy Question We do not use the “ keep # of versions” as that complicates our retention scheme.
If we set the plan to keep 30 versions, A file that changes every day will have 30 versions in 30 days. For files that change once per month, it willl keep 30 months of versions.
We set our retention for file backups to 90 days, with one “full” each month and daily block level backups.
In the above example we would have 90 versions of the daily- updated file, and 3 versions of the monthly-updated file.
Because we do “full” ( what MSP360 calls incremental) backups only once per month, it takes an extra 29 days for the oldest set of full/ block-level versions to age to 90 days. If we did a full (incremental) each week, we would only have an extra week to wait until the oldest set is purged. The trade-off is that we would be storing 12 “full” versions vs 3 and if there are large, frequently updated files ( pst, Quickbooks files, etc) it can increase your storage consumption even more than keeping an extra 21 days of block level backups.
Confusing? Yes.
But it has worked well for us.
Happy to discuss further.
-Cloud Steve