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Diag-V is a read-only PowerShell module containing several Hyper-V related diagnostics to assist with managing standalone Hyper-V Servers and Hyper-V clusters.

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Diag-V is a PowerShell Module collection of primarily Hyper-V diagnostic functions, as well as several windows diagnostic functions useful when interacting with Hyper-V servers. Hyper-V functions are cable of automatically detecting if being run against a standalone or Clustered Hyper-V instance. If a cluster is detected, data will be gathered from all nodes in the cluster. Diag-V is a read only, data gathering module that can provide rapid insight into your Hyper-V environment.

Diag-V provides the following functions:


Current Hyper-V and Failover cmdlets are typically scoped to the host they are run on. ie If you run Get-VM it only returns VMs from the host specified.

Diag-V aims to leverage these cmdlets to provide more complete, and rapid operational insights into a Hyper-V environment.

Diag-V can quickly answer questions like these:

  • How many VMs are in this cluster?
  • Where are all the VMs stored?
  • Where are all the VHDXs stored?
  • Does the Hyper-V deployment have enough storage to accommodate dynamic VHD growth?
  • What is the health status of the CSVs?
  • Are any of the VMs using shared VHDXs?
  • What is the replication status of my VMs?
  • Do my Hyper-V servers have enough resources? Do I have room to grow?
  • Can my Hyper-V cluster withstand a node failure?



  • Designed and tested on Server 2012R2 and Server 2016 Hyper-V servers running PowerShell 5.1
  • Nearly all functions require the console session to be running as administrator
  • Diag-V must be run as a user that has local administrator rights on the Hyper-V server
  • If running diagnostics that interact with all cluster nodes Diag-V must be run as a user that has local administrator right to all members of the cluster
#from an administrative 5.1.0+ PowerShell session
Install-Module -Name 'Diag-V' -Scope CurrentUser

Quick start

#import the Diag-V module
Import-Module -Name "Diag-V"
#I need to know where all my VHDX files are, and how much space they could grow to
#could I potentially save a lot of disk space based on my VMs BIN settings?
#I need the current state, and detailed information about my CSVs
#i need to find out how big this folder is, and what's taking up so much space
#what errors did my hyper-v server have in the last 12 hours?
#what version of Integration services are my VMs running (2012/R2) - or what features are activated?
#are any of my VMs using shared VHDs?
#I want detailed VM information for all discovered VMs in my Hyper-V deployment
#I want to know exactly where each component of my VMs are stored
#what is the current replication status of my VMs?
#what is the current status of my VMs?
#I want a complete health report of my Hyper-V deployment
#I want to know if my Hyper-V cluster can withstand a node failure


Jake Morrison - https://techthoughts.info/


Justin Saylor - Logo


This PowerShell project was created with Catesta.

Running Diag-V remotely

Diag-V leverages numerous existing cmdlets to provide rapid operational insight into your Hyper-V deployment. This makes it tricky to make Diag-V fully remote capable as some of these cmdlets support -ComputerName and -Credential while some do not. Diag-V is also cluster aware, and will scope your current or provided credentials to connect to other nodes in the cluster to retrieve operational data. This runs into the 'double-hop' issue as the remote machine has to pass credentials on to the other nodes to get data back.

For best results log into one Hyper-V server in the cluster and run your desired diagnostic. That said, I've enabled the majority of functions with a credential parameter. I've had success establishing a PSSession to a remote Hyper-V server, and I can specify the credential parameter which bypasses the double-hop issue. The configuration of your WinRM may affect your results. Consult each functions help for additional information.

Diag V

Hyper-V PowerShell Diagnostic Utility

Diag V Info

⭐ Stars 12
🔗 Source Code github.com
🕒 Last Update a year ago
🕒 Created 6 years ago
🐞 Open Issues 1
➗ Star-Issue Ratio 12
😎 Author techthoughts2