Backups
Backup Stategy
Incremental Backups
Full Backups
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| Full Backup Strategy |
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| Typical Weekly Full Backup |
- When doing a typical Full Backup,
if Sunday's full backup Fail, you will NOT be able to restore all files
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Sun
1 |
M |
T |
W |
T |
F |
S |
On Sunday 1st,
Do a Full Backup |
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Sun
8 |
M |
T |
W |
T |
F |
S |
On Sun 8th,
Full Backups failed |
Incremental changes are worthless during this time till Sun 15th |
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Sun
15 |
M |
T |
W |
T |
F |
S |
On Sun 15th,
Full Backups failed |
Incremental changes are worthless during this time till Sun 22th |
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Sun
22 |
M |
T |
W |
T |
F |
S |
On Sunday 22nd,
Do a Full Backup |
Everything is normal after Sun 22nd |
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Sun
26 |
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- Problem: You have 2 weeks of worthless backups
- Problem: For 2 monthly Full backups that fails, You have 2 Months of missing files
- You will NOT be able to restore your data during those 2 weeks or 2 months
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| Weekly 32-Day Incrementals |
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Sun
1 |
M |
T |
W |
T |
F |
S |
On Sunday, Do a Full Backup |
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Sun
8 |
M |
T |
W |
T |
F |
S |
On Sun 8th, Full Backups failed |
To recreate a backup till Sun 15th,
we use the Full Backup on Sun 1st plus the Weekly 8-day Incremental Backups till 15th |
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Sun
15 |
M |
T |
W |
T |
F |
S |
On Sun 15th, Full Backups failed |
To recreate a backup till Sun 22,
we use the Full Backup on Sun 1st plus the the Weekly 32-day Incremental Backups |
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Sun
22 |
M |
T |
W |
T |
F |
S |
On Sunday, Do a Full Backup |
Everything is normal after Sun 22nd |
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Sun
29 |
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- The Weekly 32-day Backups can "recreate" your bad "weekly" Full Backups
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