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AWS fsx documentation change

Service: fsx · 2025-08-16 · Documentation medium

File: fsx/latest/ONTAPGuide/how-snaplock-works.md

Summary

Added section about SSD capacity decrease limitations with SnapLock volumes

Security assessment

Documents operational constraints to maintain SnapLock compliance requirements (6-month audit log retention). While related to data governance, there's no evidence this addresses an active security vulnerability.

Diff

diff --git a/fsx/latest/ONTAPGuide/how-snaplock-works.md b/fsx/latest/ONTAPGuide/how-snaplock-works.md
index 0b5dceb13..6c5449ec6 100644
--- a//fsx/latest/ONTAPGuide/how-snaplock-works.md
+++ b//fsx/latest/ONTAPGuide/how-snaplock-works.md
@@ -5 +5 @@
-Retention modesSnapLock administratorSnapLock audit log volumesAccessing your data in a SnapLock volume
+Retention modesSnapLock administratorSnapLock audit log volumesAccessing your data in a SnapLock volumeSnapLock and SSD capacity decrease operations
@@ -125,0 +126,15 @@ You can also replicate SnapLock data with SnapMirror, but the source and destina
+## SnapLock and SSD capacity decrease operations
+
+Consider these points about SSD decreases before creating a SnapLock volume:
+
+  * Amazon FSx will reject SSD capacity decrease requests on file systems that contain SnapLock volumes.
+
+  * You can't create SnapLock volumes during an SSD capacity decrease operation.
+
+
+
+
+These limitations exist because ONTAP enforces a minimum retention period of 6 months for the SnapLock audit log volume, which would prevent file system deletion during that period if a SnapLock volume were moved as part of an SSD decrease operation.
+
+If you need to decrease SSD capacity on a file system with SnapLock volumes, you would need to migrate your data to a new file system with smaller SSD capacity. For more information about SSD capacity decrease operations, including limitations and considerations, see [Updating file system SSD storage and IOPS](./storage-capacity-and-IOPS.html#increase-primary-storage).
+