Tag Archives: KB2090639

VMware ESXi CBT Bug – Your data may be at risk

Changed Block Tracking (CBT) is a¬†great feature introduced in ESXi 4.0, that effectively brought incremental backup technology to our virtual machines. Third parties were able to leverage this so backups would only require the processing of blocks that have changed rather than all blocks. This saved inordinate amounts of time, data and effort while allowing vendors to support flexible backup… Read more »