Forum Discussion
How exactly did you specify the exclusion of a disk from a VM?
This disk was excluded using Include/Exclude rules. I've seen some articles and discussions about exclusion rules too, but we use them into another environment with no problems. All the excluded VMDK files were never backed up.
To verify this I've created a test backup of our SQL server with an additional VMDK which is excluded from the backup. You can see the selection list on the following screenshot:
On the next screenshot you can see the "Selection details" tab of this selection list:
And here are the results of Full and Incremental backups of this VM:
As you can see, only one VM disk was backed up with no errors during Full and Incremental backups. Actually, this is not an RDM disk but this test confirms that we can use exclusions for VMDK files during VM backup.
Anyway, I don't think that any exclusion is a real reason of shadow copy failure. It seems like this error appears while vCenter processes a snapshot of VM while there is another VSS shadow copy for a volume in a VM. I'm really wondering why do we loose shadow storage configuration and a shadow copy of the volume while Microsoft VSS supports up to 64 shadow copies of the volume.
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