Tag Archives: virtual machine

Change VM MoRef ID in Veeam B&R database

1 Reply

Nothing revolutionary here, but I thought I’ll document the procedure as I happen to use it every now and then.

All VMs are assigned with a MoRef id when they are added to a vCenter deployment.

When you want to backup a VM using Veeam B&R, you add it into a pre-configured job using its name, however on the backend Veeam associates the VM with that job using the MoRef id.

If the VM which is being backed up by Veeam B&R is removed from the vCenter inventory (because you removed a whole host from vCenter or a VM was in an invalid state), the MoRef id for that VM will change when the VM is added back into the vCenter. Veeam will not register the MoRef id change automatically and kick off a new full backup (on the next backup cycle) for the same VM it previously backed up – thinking it’s a completely new VM (due to the unique new MoRef id).

To avoid a new full backup, you need to manually update the MoRef id for that VM in the Veeam database prior to the next backup cycle.

Note that the following steps are not supported by Veeam officially. Mess with the Veeam database at your own risk!

Continue reading →

Enable Hot Add vCPU and Memory on VMs using PowerShell (V2)

1 Reply

This is a script which will allow you to enable the Hot Add vCPU and Memory feature on all or a sub set of your VMs.

IMPORTANT NOTE – the script will recursively power off each VM defined in CSV (unless Hot Add is already enabled), apply the config then power each VM back on. So make sure you run this script in an outage window.

When creating the CSV, make sure to include the header row – Name.

The script will also generate a log file.

Continue reading →