- Knowledge Base Listing Page
- 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 |
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
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.
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
Click here to send feedback regarding this KB, or suggest content for a new KB.
To report a typo on this page, highlight the typo with your mouse and press CTRL + Enter.
To report a typo on this page, highlight the typo with your mouse and press CTRL + Enter.
Spelling error in text
Thank you!
Your feedback has been received and will be reviewed.
Oops! Something went wrong.
Please try again later.
KB Feedback/Suggestion
This form is only for KB Feedback/Suggestions, if you need help with the software open a support case
Verify your email to continue your product download
We've sent a verification code to:
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!
Your feedback has been received and will be reviewed.