VM Snapshot Size (GB) alarm incorrectly triggers on virtual machines with no snapshots

Products

• VMware vSphere ESXi

Issue/Introduction

Symptoms:
In VMware vCenter Server 5.1:

• You configured a vCenter Server alarm to send alarms when virtual machines are running from snapshots
• The alarm is falsely triggered even when the virtual machine does not have snapshots
• You created the VM Snapshot Size (GB) alarm in vCenter Server
• You see false alarms for multiple virtual machines in the inventory
• Snapshot Alarms get triggered regardless of Alarm Definition Threshold setting

Resolution

This issue is resolved in vCenter Server 5.1 Update 1. To download vCenter Server 5.1 Update 1

To work around this issue when you do not want to upgrade, disable the VM Snapshot Size (GB) alarm in vCenter Server 5.1.