Acronis Backup for Linux Server - User Guide - Manual (Page 46)

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Here, daily incremental backups will be created on Tuesdays and Thursdays, with weekly and
monthly backups performed on Fridays. Note that, in order to choose Friday in the Weekly/monthly
field, you need to first select it in the Back up on field.
Such an archive would allow you to compare your financial documents as of the first and the last day
of work, and have a five-year history of all documents, etc.
No daily backups
Consider a more exotic GFS scheme:

Start backup at: 12:00 PM

Back up on: Friday

Weekly/monthly: Friday

Keep backups:

Daily: 1 week

Weekly: 1 month

Monthly: indefinitely
Backup is thus performed only on Fridays. This makes Friday the only choice for weekly and monthly
backups, leaving no other date for daily backups. The resulting “Grandfather-Father” archive will
hence consist only of weekly differential and monthly full backups.
Even though it is possible to use GFS to create such an archive, the Custom scheme is more flexible in
this situation.
4.2.6.3 Custom backup scheme
At a glance

Custom schedule and conditions for backups of each type

Custom schedule and retention rules
Parameters
Parameter Meaning
Full backup schedule Specifies on what schedule and under which conditions to perform a full backup.
For example, the full backup can be set up to run every Sunday at 1:00 AM as
soon as all users are logged off.
Incremental backup
schedule Specifies on what schedule and under which conditions to perform an
incremental backup.
If the archive contains no backups at the time of the task run, a full backup is
created instead of the incremental backup.
Differential backup schedule Specifies on what schedule and under which conditions to perform a differential
backup.
If the archive contains no full backups at the time of the task run, a full backup is
created instead of the differential backup.