IDC Logo

Veeam #1 Worldwide in
Data Recovery & Protection in 2H'22

LEARN MORE
  • Veeam Support Knowledge Base
  • Backup and Replicas of virtual machines running on ESXi 6.0.x with Change Block Tracking (CBT) enabled may not be recoverable

Backup and Replicas of virtual machines running on ESXi 6.0.x with Change Block Tracking (CBT) enabled may not be recoverable

KB ID: 2075
Product: Veeam Backup & Replication
Version: 8.x
Published: 2015-11-17
Last Modified: 2020-08-13
mailbox
Get weekly article updates
By subscribing, you are agreeing to have your personal information managed in accordance with the terms of Veeam's Privacy Notice.

Cheers for trusting us with the spot in your mailbox!

Now you’re less likely to miss what’s been brewing in our knowledge base with this weekly digest

error icon

Oops! Something went wrong.

Please try again later.

Challenge

Leveraging VMware Changed Block Tracking (CBT) data supplied by VMware ESXi 6.0 can potentially render the data in backups or replicas inconsistent or corrupt.

Cause

This is a VMware ESXi issue in CBT logic that affects ESXi 6.0 through ESXi 6.0 Update 1a. It is resolved with VMware ESXi 6.0 patch ESXi600-201511001. Please see VMware KB article for additional information about the issue. 

Solution

Installing the patch alone is not sufficient, CBT reset is also required for all of your VMs. CBT reset is mandatory in every scenario, because existing CBT maps may already be inconsistent due to the original bug, which in turn may result in inconsistent full backups in future.

Please follow this article to reset CBT. Please note that performing Active Full backups cannot be considered as a substitute to CBT reset with this particular CBT bug.

More Information

To download the patch, please go the VMware KB article KB2137545
To submit feedback regarding this article, please click this link: Send Article Feedback
To report a typo on this page, highlight the typo with your mouse and press CTRL + Enter.

Spelling error in text

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Thank you!

Thank you!

Your feedback has been received and will be reviewed.

Oops! Something went wrong.

Please try again later.

You have selected too large block!

Please try select less.

KB Feedback/Suggestion

This form is only for KB Feedback/Suggestions, if you need help with the software open a support case
By submitting, you are agreeing to have your personal information managed in accordance with the terms of Veeam's Privacy Notice.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Verify your email to continue your product download
We've sent a verification code to:
  • Incorrect verification code. Please try again.
An email with a verification code was just sent to
Didn't receive the code? Click to resend in sec
Didn't receive the code? Click to resend
Start using Veeam:
Download the product
&
Activate the license key
Thank you!

Thank you!

Your feedback has been received and will be reviewed.

error icon

Oops! Something went wrong.

Please try again later.