Q. I automatically take daily snapshots on the RDS and keep them for 14 days. How can I create two snapshots per day if only one snapshot is set at a specific time?
1. Date based on Backup
Automatic RDS backups are per day.
Unfortunately, there is no way to do it twice a day yet(as of January 2020).
2. Automatic backup range
RDS backups do not back up only partially, but back up the entire DB instance.
(eg, backups from 10:00 to 15:00/ 16:00 to 20:00 should not be divided.
This includes everything before 16:00.)
3. How to apply automatic backups more than once
If you have an essential reason to split backups twice a day,
You need to work manually or develop a Lambda script.
RDS takes a lot of backup time and are a little underperforming,
we do not recommend to do multiple times a day.
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This document is based on February 2020.
Please leave a comment if document needs an update.
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