Chapter 2: vmPRO Setup and Configuration
vSphere Changed Block Tracking Support
Quantum vmPRO User’s Guide 85
Figure71:CBT Cycle
Note:The CBT files are not complete disk images because they contain only the disk's changed data.
You cannot access the data in CBT files until you perform a full recovery of these files using the
RecoverVirtualMachinesWizard.
CBT Considerations
Keep the following in mind when using CBT:
Versions
l VMs must be running virtual hardware versions 7 or higher.
l We recommend using only paid versions of VMware ESX or ESXi servers. Free versions have
various application programming interface (API) limitations that keep the vmPRO appliance from
functioning as designed.
l The ESX server must be version 4.0 update 2 or above.
If you are using ESX 4.1, reverting a snapshot resets CBT for that VM.
Resolvethereset
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