VMware CBT significantly reduces the amount of time the backup software takes to perform incremental backups because it tracks changes in a special log file. This allows you to dramatically reduce the amount of backup data, especially in large environments with hundreds of VMs, and speed up the backup process. CBT is part of VMware vSphere Storage APIs – Data Protection framework first released in version 4.0, which allows third-party data protection applications to leverage CBT to perform more efficient backup and replication.ĬBT works on the ESXi Storage Stack level and allows third-party backup solutions to back up only the blocks of data changed since the last backup, that is, create incremental backups, or the blocks in use instead of the full VM. What Is Changed Block Tracking?Ĭhanged Block Tracking (CBT) is a native VMware feature that logs changed blocks in a tracking file. Download a free white paper to learn the fundamentals of effective planning, determine the recovery objectives, maximize performance and reduce administration effort. ![]() ![]() Maintain high availability and improve ransomware resilience of your VMware infrastructure with these expert tips.
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