How to Identify Orphaned MCS Catalog Base Disks in VMWare ESX

There are two options to do this:

Option 1

Follow https://support.citrix.com/article/CTX272453


Option 2

First, check if there are any VMs that are pending an image update.

  1. Open PowerShell (run as admin) on any DDC

  2. Load the Citrix snap-ins: asnp citrix*

  3. Run the command: Get-BrokerMachine -ImageOutOfDate $true | select MachineName

  4. Reboot the listed VMs from Citrix Studio

  5. After the VMs are back up from the reboot re-run the same command: Get-BrokerMachine -ImageOutOfDate $true | select MachineName (The resulting output returns nothing so all VMs are up to date)

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Next, identify the active and inactive (orphaned) base disks

  1. Browse the VMWare data store where the VMs are located.

  2. ​Here we see two base disks for the same catalog and need to determine which can be deleted​User-added image

  3. Power off one of the VMs in the catalog and browse to its folder

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  4. Export the *-xd-delta.vmdk file to you local machine

  5. The export will generate 2 files

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  6. Open the *-xd-delta.vmdk with a text editor

  7. You will see parentFileNameHint=(Location of the base disk in use by the catalog) as shown in below screenshot. Since this base disk is in use, do not delete this.


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The other orphaned base disks that were listed in step 2 can now be safely deleted.

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