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gregransom
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Full Name: Greg Ransom
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Backup job failed. Discovery phase failed. Cannot

Post by gregransom » Nov 15, 2017 1:57 am

Hi,

We are having an issue with backing up one of our Virtual Windows servers (windows server 2003 -yes I know it should be replaced) running on a Vmware ESX 6.0.0 host. This particular ESX host suffered a failed motherboard during a routine maintenance power cycle. Motherboard was replaced but since then one of Virtual Machines refuses to backup using Veeam.

Our environment is using
Veeam Backup & Replication 9.0 (9.0.0.902)
VMware Hosts, ESXi 6.0.0 (20151004001)
Direct Attached Storage for ESX.
Backup Destination are NAS units.

The error it displays is:

Code: Select all

Failed to prepare guest for hot backup. Error: VSSControl: -2147212521 Backup job failed. Discovery phase failed. Cannot add volumes to the snapshot set. Cannot add a volume to the snapshot set. Volume name: [\\?\Volume{2a9866d5-2497-11e4-a304-806e6f6e6963}\]. Cannot add volume to the set of volumes that should be shadowed. VSS error: VSS_E_MAXIMUM_NUMBER_OF_SNAPSHOTS_REACHED. Code:0x80042317
Error: VSSControl: -2147212521 Backup job failed. Discovery phase failed. Cannot add volumes to the snapshot set. Cannot add a volume to the snapshot set. Volume name: [\\?\Volume{2a9866d5-2497-11e4-a304-806e6f6e6963}\]. Cannot add volume to the set of volumes that should be shadowed. VSS error: VSS_E_MAXIMUM_NUMBER_OF_SNAPSHOTS_REACHED. Code:0x80042317
In Vmware vSphere client the Virtual Machine does NOT show any Snapshots in Snapshot Manager. I also ran the consolidate of the snapshots to no effect.
Any suggestions would be appreciated.

Kind regards,
Greg

veremin
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Re: Backup job failed. Discovery phase failed. Cannot

Post by veremin » Nov 15, 2017 12:40 pm

What is your support ticket ID for this issue (it's requested when you click New Topic)? Thanks.

gregransom
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Re: Backup job failed. Discovery phase failed. Cannot

Post by gregransom » Nov 27, 2017 1:57 am

Hi, this was raised under support ticket: 02383759.

Since I posted this I have been on holiday and my colleagues have been progressing this and all parties came to the conclusion that the issue stems from Windows Server 2003 server is now incompatible with our version of Veeam. It's still odd in that this particular server was backing up just fine in the same environment just prior to an ESX host failure.

veremin
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Full Name: Vladimir Eremin
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Re: Backup job failed. Discovery phase failed. Cannot

Post by veremin » Nov 27, 2017 11:49 am

Does your 2003 server have at least SP1 installed or not? Thanks.

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