Merge pull request #271352 from khdownie/patch-1

Update file-sync-choose-cloud-tiering-policies.md

Author: prmerger-automator[bot]

articles/storage/file-sync/file-sync-choose-cloud-tiering-policies.md

@@ -4,7 +4,7 @@ description: Details on what to keep in mind when choosing Azure File Sync cloud
 author: khdownie
 ms.service: azure-file-storage
 ms.topic: conceptual
-ms.date: 03/26/2024
+ms.date: 04/05/2024
 ms.author: kendownie
 ---
 
@@ -16,7 +16,7 @@ This article provides guidance on selecting and adjusting cloud tiering policies
 
 - Cloud tiering isn't supported on the Windows system volume.
 
-- You can still enable cloud tiering if you have a volume-level FSRM quota. Once an FSRM quota is set, the free space query APIs that get called automatically report the free space on the volume as per the quota setting.
+- If you're using File Server Resource Manager (FSRM) for quota management on server endpoints, we recommend applying the quotas at the folder level and not at the volume level. You can still enable cloud tiering if you have a volume-level FSRM quota. Once an FSRM quota is set, the free space query APIs that get called automatically report the free space on the volume as per the quota setting. However, because the free space reported by the quota setting is based on logical size, the actual amount of volume free space might be different. This could cause endless tiering if Azure File Sync thinks there isn't enough volume free space.
 
 ### Minimum file size for a file to tier