VMware has published a patch for ESXi 6.0 that resolves the (new) CBT Bug documented in KB2136854.
Product: VMware ESXi 6.0
Release date: November 25, 2015
Links: KB2137545 | Download
This patch updates the esx-base VIB to resolve an issue that occurs when you run virtual machine backups which utilize Changed Block Tracking (CBT) in ESXi 6.0, the CBT API call QueryDiskChangedAreas() might return incorrect changed sectors that results in inconsistent incremental virtual machine backups. The issue occurs as the CBT fails to track changed blocks on the VMs having I/O during snapshot consolidation.
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The latest ESXi 6.0.0 Build number is now: 3247720
Updated: ESXi Release and Build Number History
Updated: VMware Product Latest Version
Updated: ESXi Image Profiles