online backup example
Please note this example is provide for illustration purposes, your
individual needs may differ from this example.
Let's take a look at a 30 day backup cycle. In
this example, Day 1 is Monday.
Incremental - Changed files only since last
Incremental Backup are included in the backup
Full - All files regardless of whether they have
changed or not are included in the backup
|
Backup Reference |
Backup Type |
Overwrite |
|
|
|
|
|
Day 1 |
Incremental |
N/A |
|
Day 2 |
Incremental |
N/A |
|
Day 3 |
Incremental |
N/A |
|
Day 4 |
Incremental |
N/A |
|
Day 5 |
Incremental |
N/A |
|
Week 1 |
Full |
N/A |
|
Day 6 |
Incremental |
N/A |
|
Day 7 |
Incremental |
N/A |
|
Day 8 |
Incremental |
Day 1 |
|
Day 9 |
Incremental |
Day 2 |
|
Day 10 |
Incremental |
Day 3 |
|
Day 11 |
Incremental |
Day 4 |
|
Day 12 |
Incremental |
Day 5 |
|
Week 2 |
Full |
N/A |
|
Day 13 |
Incremental |
Day 6 |
|
Day 14 |
Incremental |
Day 7 |
|
Day 15 |
Incremental |
Day 8 |
|
Day 16 |
Incremental |
Day 9 |
|
Day 17 |
Incremental |
Day 10 |
|
Day 18 |
Incremental |
Day 11 |
|
Day 19 |
Incremental |
Day 12 |
|
Week 3 |
Full |
Week 1 |
|
Day 20 |
Incremental |
Day 13 |
|
Day 21 |
Incremental |
Day 14 |
|
Day 22 |
Incremental |
Day 15 |
|
Day 23 |
Incremental |
Day 16 |
|
Day 24 |
Incremental |
Day 17 |
|
Day 25 |
Incremental |
Day 18 |
|
Day 26 |
Incremental |
Day 19 |
|
Week 4 |
Full |
Week 2 |
|
Day 27 |
Incremental |
Day 20 |
|
Day 28 |
Incremental |
Day 21 |
|
Day 29 |
Incremental |
Day 22 |
|
Day 30 |
Incremental |
Day 23 |
|
i.e. On Day 8, the system will automatically overwrite
data from Day 1. On Week 3, the system will automatically
overwrite data from Week 1.
This model provides the ability to maintain 7 days
worth of backup version history, together with one full backup per
week.
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