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chore(kb/aws/rds): review and improve section on automatic backups

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Michele Cereda
2026-02-26 01:14:53 +01:00
parent 76032b8ca6
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1 changed files with 14 additions and 7 deletions
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knowledge base/cloud computing/aws/rds.md
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@@ -345,16 +345,23 @@ Cross-region snapshot copies also incur additional transfer and storage charges
Automatic backups are storage volume snapshots of **entire** DB instances.
Automatic backups are **enabled** by default.<br/>
Setting the backup retention period to 0 disables them, setting it to a nonzero value (re)enables them.
Setting an instance's `BackupRetentionPeriod` to 0 disables them, setting it to a nonzero value (re)enables them.
> Enabling automatic backups takes the affected instances offline to have a backup created **immediately**.<br/>
> While the backup is created, the instance is kept in the _Modifying_ state. This **will** block actions on the
> instance and _could_ cause outages.
> [!warning]
>
> - _Enabling_ or _disabling_ automatic backups takes the affected instances **offline** for some time to make the
> required changes.<br/>
> This **will** cause some downtime.
> - When enabling backups, RDS creates one **immediately**.<br/>
> This **cannot** be avoided.
> - While the first backup is created, an instance is kept in the _Modifying_ state.<br/>
> This **will** block actions on the instance, and _could_ cause outages.
Automatic backups occur **daily** during the instances' backup window, configured in 30 minute periods. Should backups
require more time than allotted to the backup window, they will continue after the window ends and until they finish.
Automatic backups occur **daily** during the instances' backup window, configured in 30 minute periods.<br/>
Should they require more time than allotted to the backup window, they will continue after the window ends and until
they finish.
Backups are retained for up to 35 days (_backup retention period_).<br/>
Backups are retained for up to 35 days (the maximum value of `BackupRetentionPeriod`).<br/>
One can recover DB instances to **any** point in time that sits inside the backup retention period.
The backup window **must not overlap** with the weekly maintenance window for DB instance or Multi-AZ DB cluster.<br/>