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Below is this week’s VTT VMCE practice question for this week. Please remember to hide your comment.

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An infrastructure with 50 VMs has a power outage.  After the VMware cluster has booted up again, 3 large VMs seem to be stuck in a boot loop.  Assuming only the OS is installed on the VM OS disk, which method would require the least amount of backup data transferred to allow the VMs to boot?

  1. Perform an Instant VM Recovery with Quick Rollback and Automatic Power On at the end
  2. Use the “Restore Guest Files” option to restore the VM configuration files
  3. Perform a Virtual Disk Restore with the Quick Rollback feature disabled
  4. Perform a Restore VM Files and select only the .vmx file for restore
  1. Perform an Instant VM Recovery with Quick Rollback and Automatic Power On at the end

 

  1. Perform an Instant VM Recovery with Quick Rollback and Automatic Power On at the end

 

under normal circumstances i would go with Quick Rollback - but not if the issue is due to Hardware Problems or an Power Outage (like in this case).
So, it should be c - Perform a Virtual Disk Restore with the Quick Rollback feature disabled

 

under normal circumstances i would go with Quick Rollback - but not if the issue is due to Hardware Problems or an Power Outage (like in this case).
So, it should be c - Perform a Virtual Disk Restore with the Quick Rollback feature disabled

 

Good catch!

  1. Perform an Instant VM Recovery with Quick Rollback and Automatic Power On at the end

 

  1. Perform a Virtual Disk Restore with the Quick Rollback feature disabled


 

 

This is tricky, since A. will not transfer data from backup to production until you need it (storage v-motion). But if you want the VM running from the production storage, then i would say C.

 

This week’s VTT question answer is below…

Markus pretty much hit the nail on the head here. First, determine where the issue is → the problem the VMs are having is within the guest OS (boot-loop issue). Because the issue is within the guest OS, options b. and d. are not correct (they are essentially the same answer) since they suggest restoring a file which doesn’t have anything to do with the guest OS. The VM somehow needs to be restored so it’s OS will boot up properly. You can do this several ways - IR, Entire VM, Virtual Disk. The best way to recover, generally, is doing so using Quick Rollback. What this feature provides is performs restores only using changes since the Backup (Restore Point chosen to restore from) was taken. But, as Markus shared, this isn’t an option to use for a power issue. Because of this, the only remaining option left is c. Perform a Virtual Disk Restore with the Quick Rollback feature disabled. For more info, see below.

URL:
https://helpcenter.veeam.com/docs/backup/vsphere/incremental_restore.html?ver=120

 

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