From 2ead82fecbff111c58b3bf19fb65394ffae07c6f Mon Sep 17 00:00:00 2001 From: Michele Cereda Date: Thu, 26 Feb 2026 01:14:53 +0100 Subject: [PATCH] chore(kb/aws/rds): review and improve section on automatic backups --- knowledge base/cloud computing/aws/rds.md | 21 ++++++++++++++------- 1 file changed, 14 insertions(+), 7 deletions(-) diff --git a/knowledge base/cloud computing/aws/rds.md b/knowledge base/cloud computing/aws/rds.md index d6469c8..4af9ab6 100644 --- a/knowledge base/cloud computing/aws/rds.md +++ b/knowledge base/cloud computing/aws/rds.md @@ -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.
-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**.
-> 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.
+> This **will** cause some downtime. +> - When enabling backups, RDS creates one **immediately**.
+> This **cannot** be avoided. +> - While the first backup is created, an instance is kept in the _Modifying_ state.
+> 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.
+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_).
+Backups are retained for up to 35 days (the maximum value of `BackupRetentionPeriod`).
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.