Changed Block Tracking (CBT) enables creating incremental backups of virtual machines. In comparison with conventional VM backups, guest hard drives are synchronized. Using CBT, the hypervisor detects changed blocks and the backup software will only store these blocks. Unfortunately these are some vSphere and backup …
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Every VMware administration knows the following issue - the cluster needs to patched and so the particular nodes need to be rebooted. Fortunately this doesn't bother the users working on the farm becuase the virtual machines can be moved "online" between the cluster nodes.

There might be a little show stopper …

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