User Guide

Examples

Each day of the past week, each week of the past month

Let us consider a GFS backup scheme that many may find useful.

• Back up files every day, including weekends

• Be able to recover files as of any date over the past seven days

• Have access to weekly backups of the past month

• Keep monthly backups indefinitely.

Backup scheme parameters can then be set up as follows.

• Start backup at: 11:00 PM

• Back up on: All days

• Weekly/monthly: Saturday (for example)

• Keep backups:

o Daily: 1 week

o Weekly: 1 month

o Monthly: indefinitely

As a result, an archive of daily, weekly, and monthly backups will be created. Daily backups will be

available for seven days since creation. For instance, a daily backup of Sunday, January 1, will be

available through next Sunday, January 8; the first weekly backup, the one of Saturday, January 7, will

be stored on the system until February 7. Monthly backups will never be deleted.

Limited storage

If you do not want to arrange a vast amount of space to store a huge archive, you may set up a GFS

scheme so as to make your backups more short-lived, at the same time ensuring that your

information can be recovered in case of an accidental data loss.

Suppose that you need to:

• Perform backups at the end of each working day

• Be able to recover an accidentally deleted or inadvertently modified file if this has been

discovered relatively quickly

• Have access to a weekly backup for 10 days after it was created

• Keep monthly backups for half a year.

Backup scheme parameters can then be set up as follows.

• Start backup at: 6:00 PM

• Back up on: Workdays

• Weekly/monthly: Friday

• Keep backups:

o Daily: 1 week

o Weekly: 10 days

o Monthly: 6 months