High Storage Write Latency on NSX Manager Node

Products

• VMware NSX
• VMware Cloud Foundation

Issue/Introduction

• NSX Manager UI reports "Manager Disk Usage High".
• High write latency (e.g., 250 MB/s) observed on a specific NSX Manager node.
  
• Storage latency alarms in vCenter or Aria Operations for the management datastore.
• Asymmetric I/O load across the NSX Manager cluster nodes.

Environment

• VMware Cloud Foundation (VCF) 5.x / 9.x
• VMware NSX 4.x / 9.x

Cause

This issue occurs when Aria Operations data collection for the NSX Management Pack is enabled or configured with aggressive collection intervals, causing high I/O throughput and disk latency on the target NSX Manager node.

Resolution

For immediate Workaround, verify and adjust the data collection settings:

1. Log in to the Aria Operations UI.
2. Navigate to Data Sources > Integrations.
3. Select the VMware NSX integration.
4. Locate the specific NSX Manager node exhibiting high latency.
5. Disable data collection for that node

To have a permanent resolution, please open a support case with  Aria support team. See Contact Support. Scroll to the bottom of the page and click on your respective region.

Additional Information

• Average disk access latency for NSX appliance VMs should be less than 10ms.
• Refer to NSX Manager VM and Host Transport Node System Requirements for detailed storage specifications.