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AWS AmazonRDS documentation change

Service: AmazonRDS · 2025-05-22 · Documentation medium

File: AmazonRDS/latest/UserGuide/custom-managing-sqlserver.storage-modify.md

Summary

Added warning against modifying storage via EC2/EBS console for RDS Custom instances

Security assessment

Emphasizes operational security best practices to prevent configuration mismatches. While not fixing a vulnerability, it adds guidance to avoid security risks from misconfiguration.

Diff

diff --git a/AmazonRDS/latest/UserGuide/custom-managing-sqlserver.storage-modify.md b/AmazonRDS/latest/UserGuide/custom-managing-sqlserver.storage-modify.md
index a5a8d7ec6..08885a881 100644
--- a//AmazonRDS/latest/UserGuide/custom-managing-sqlserver.storage-modify.md
+++ b//AmazonRDS/latest/UserGuide/custom-managing-sqlserver.storage-modify.md
@@ -33,0 +34,2 @@ For more information, see [RDS Custom support perimeter](./custom-concept.html#c
+  * Modify storage only through the Amazon RDS console or AWS CLI. Modifying storage directly from Amazon EC2 or Amazon EBS console or CLI can cause a mismatch between expected and actual storage settings. For Multi-AZ instances, this can result in mismatched volume sizes on the two hosts, leading to an _unsupported configuration_ state for RDS Custom.
+