When attempting to backup a VMware virtual machine with GRT enabled, the backup may complete with the exception "One or more virtual disks contain volumes that do not support Granular Recovery Technology (GRT)"

Problem

When attempting to backup a virtual machine running Microsoft Windows on an ESX host, the backup may complete with the following exception.

Error Message

Job log message: V-79-57344-38725 - One or more virtual disks contain volumes that do not support Granular Recovery Technology (GRT). Granular restores cannot be performed for these volumes.

Debug Log will show:
[mounter]            - VDiskMounter::MountAllDisks: no drive letter or volume GUID found, volume ignored
[mounter]            - VDiskMounter::MountAllDisks: no drive letter or volume GUID found, volume ignored
[mounter]            - VDiskMounter::MountAllDisks: no drive letter or volume GUID found, volume ignored
[mounter]            - Mount of all disks succeeded
[fsys\ntfs\img_pdi]  + img_pdi_attach.cpp (633):
[fsys\ntfs\img_pdi]  | Error mounting disk(s): E_IMG_FS_NO_GRT_VOLUMES_FOUND (0xe0009745).

Cause

This has been seen due to configuration or environmental issues with the server in relation to DNS and/or resources.

Solution

Check that server is in domain where VCENTER resides.

Check that there is sufficient memory on the server to handle VMware backups.

Either disable GRT for the VMware backup or perform a standard RAWS backup of the virtual machine

 

 

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