Comprehensive data protection for all workloads
Post Reply
ertuu85
Novice
Posts: 6
Liked: never
Joined: Jun 15, 2016 1:02 pm
Full Name: amiller
Contact:

Should CBT be enabled?

Post by ertuu85 »

I'm doing a vCheck report and I see on my vm's that are being backed up that CBT is disabled on them. Should I enable CBT or does veeam not require it? Or would enabling CBT increase backup speeds?

All our backups are reverse incremental
Shestakov
Veteran
Posts: 7328
Liked: 781 times
Joined: May 21, 2014 11:03 am
Full Name: Nikita Shestakov
Location: Prague
Contact:

Re: Should CBT be enabled?

Post by Shestakov »

Hello,
It`s recommended to enable CBT.
To perform incremental backup, VBR needs to know which data blocks have changed since the previous job run. For VMware VMs with hardware version 7 or later, Veeam employs VMware vSphere Changed Block Tracking (CBT).
Whenever VBR cannot leverage VMware CBT (for example, if your VMs run an earlier version of virtual hardware or CBT is disabled at the ESX host level), it fails over to Veeam’s proprietary filtering mechanism. Instead of tracking changed blocks of data, Veeam Backup & Replication filters out unchanged data blocks.
Thanks!
Post Reply

Who is online

Users browsing this forum: K-SOLdier, kyle.shuberg, Semrush [Bot], ybarrap2003 and 161 guests