GRT backups to disk complete with exception One or more virtual disks contain volumes that do not support Granular Recovery Technology (GRT).
Article ID: 100006319
Updated On:
Description
Error 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.
The following Warning is displayed in the System Log on the Backup Exec Media Server during the job:
System Log Warning:
Log Name: System
Source: partmgr
Event ID: 58
Level: Warning
Keywords: Classic
Description:
The signature of disk
Cause
This failure occurs due to the Backup Exec Media Server disks and the Virtual machines disks having the same disk signature. When a VMware or Hyper-V agent backup to disk takes place the Virtual Machines disk files are temporarily mounted out of the Backup Exec Media servers Back-to-Disk or deduplication location. If any of the disk signatures on local disks on the Backup Exec media server match the disk signatures sing natures inside the Virtual disk file a disk signature collision occurs and the Operating System Returns a warning and Backup Exec is unable to mount and read the Virtual disk file to collect the GRT information.
Disk Collision conflict can occur after using 3rd Party utilities to convert a Physical Server to a Virtual Server or cloning utilities.
Resolution
Check and Fix the Disk Signature Conflict.
To check Disk Signature or ID use the Windows DISKPART utility commands "detail disk" and "uniqueid".
https://technet.microsoft.com/en-us/library/cc770877(WS.10).aspx
Note: Before attempting to fix the disk signature conflict backup the Virtual Machine using the Backup Exec remote agent (AWS) by installing the remote agent inside the guest or copy the Virtual machines (VHD files) to another directory or volume.
Contact Microsoft Support for further assistance changing the Disk Signature/ID.
Please note that this article references sites not owned or maintained by Veritas and, as such, Veritas is not responsible for the content portrayed on such sites, including any revisions to or deletions of content or third-party software on which this article relies. User is responsible for conducting all necessary due diligence prior to following the instructions described in this article.
Issue/Introduction
