Answer

VMCE training

Forum|Forum|1 year ago
November 21, 2024
6 comments
236 views

asengineer
Not a newbie anymore

Hello,

I’m learning for the VMCE Exam. There’s a question with this correct answer:

Question: An infrastructure with 50 VMs has a power outage. After the VMware cluster hast booted up again, three 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?

Correct answer: Perform a Virtual Disk Restore with the quick rollback feature disabled.

Why it’s not with the quick rollback feature enabled?

Best answer by haslund

Check the text specific to a quick rollback. It specifically states “Do not use this option when recovering from disaster caused by hardware or storage issue, or power loss”

+23

MicoolPaul
Forum|Forum|1 year ago
November 21, 2024

Hi,

Where did you find this VMCE Exam Question?

Michael Paul - Opinions are my own and do not necessarily reflect the opinion of Veeam | https://micoolpaul.com | Mastodon: @micoolpaul@masto.nu | Bluesky: @micoolpaul.com

+14

haslund
Mr. VMCE
Answer
Forum|Forum|1 year ago
November 21, 2024

Check the text specific to a quick rollback. It specifically states “Do not use this option when recovering from disaster caused by hardware or storage issue, or power loss”

Check out my blog on https://rasmushaslund.com - Rasmus is a Veeam Certified Trainer and passionate about all community work.

+21

Chris.Childerhose
Veeam Legend, Veeam Vanguard
Forum|Forum|1 year ago
November 21, 2024

Rasmus is the man to listen to. 👆🏼

asengineer
Author
Not a newbie anymore
Forum|Forum|1 year ago
November 21, 2024

Thank you.

AndrePulia
Veeam Vanguard
Forum|Forum|1 year ago
November 21, 2024

@asengineer Hi, you can use “quick rollback” only when you need to restore from a software failure, such as, delete files, patches.

Pay closer attention on the limitations

For quick rollback, Veeam Backup & Replication uses the Changed Block Tracking technology. Veeam Backup & Replication gets information about the current VM state and compares it with the CBT information in the backup file. This way, Veeam Backup & Replication detects what data blocks must be transported back to the production datastore to rebuild the VM or VM disk to the necessary point in time.

Quick rollback is recommended for resolving issues that occurred at the level of the VM guest OS — for example, if there has been an application error or a user has accidentally deleted a file on the VM guest OS. Do not use quick rollback if the problem has occurred at the VM hardware level, at the storage level, or due to a power loss

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