---
title: "New Features in 5.3.3"
slug: "new-features-in-533"
updated: 2026-10-27T17:24:19Z
published: 2026-10-27T17:24:19Z
canonical: "docs.vastdata.com/new-features-in-533"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.vastdata.com/llms.txt
> Use this file to discover all available pages before exploring further.

# New Features in 5.3.3

The following features are first introduced in VAST Cluster 5.3.3:

- SMB

  - [SMB Change Notifications for Subdirectories](/docs-5-3/docs/en/new-features-in-533#smb-change-notifications-for-subdirectories)
- BLOCK

  - [Live Monitoring of Block Volumes](/docs-5-3/docs/en/new-features-in-533#live-monitoring-of-block-volumes)

## SMB Change Notifications for Subdirectories

VAST Cluster 5.3.3 enables an SMB client to get notifications if a change occurs on any file or directory contained beneath the directory where the client has subscribed for change notifications. In previous releases, SMB change notifications were supported for the top-level directory only.

This feature is referred to as *SMB recursive change notifications*. To subscribe to such notifications, the client sets the SMB2_WATCH_TREE flag in the SMB2_CHANGE_NOTIFY request.

This feature is by default disabled. To enable it on your cluster, contact VAST Support.

The following limitations apply:

- SMB recursive change notifications are not available for paths for which Global Namespace is configured.
- Using SMB recursive change notifications for nested SMB shares may entail unexpected behavior.

## Live Monitoring of Block Volumes

VAST Cluster 5.3.3 offers performance metrics and live monitoring for block volumes.

Real-time collection of performance metrics can be enabled and disabled per volume. To do so:

- In VAST Web UI, go to Element Store -> Volumes, right-click a volume and select Toggle Monitoring.
- In VAST CLI, use the `--enable-live-monitoring` and `--disable-live-monitoring` options on the `volume modify` command in VAST CLI.