Real time VMware datastore performance monitoring using PowerShell

I had a scenario where we had to monitor the real time performance statistics of multiple shared VMFS datastores which are part of a multi-node VMware ESXi cluster. So this post is about the short script which uses VMware PowerCLI to get read/ write IOPS and latency details of these shared datastores across all nodes in the cluster. The output format is given below which gets refreshed automatically every few seconds.

Prerequisites:

• VMware.PowerCLI module should be installed on the node from which you are running the script
• You can verify using: Get-Module -Name VMware.PowerCLI -ListAvailable
• If not installed, you can find the latest version from the PSGallery: Find-Module -Name VMware.PowerCLI
• Install the module: Install-Module -Name VMware.PowerCLI

Note:

• I am using PowerCLI Version 11.0.0.10380590

Latest version of the project and code available at: github.com/vineethac/datastore_perfmon

Sample screenshot of output:

Hope it was useful. Cheers!

Reference:

https://www.rudimartinsen.com/2017/07/12/vsphere-performance-data-part-3-get-stat/