Tom Howarth over at http://planetvm.net/ describes a major bug in ESX4's new changed block tracking feature which is used by vDR and several 3rd party backup solutions.
In a nutshell: If you backup daily with CBT and revert a manual snapshot from a previous day, all your backups for that VM are going to be currupt (and you won't even notice it until a restore).
>Now this this is the worrying part it affects any product that uses CBT, so not only esxPress, but the Veeam products and vDR too.
Read the whole thing at http://planetvm.net/blog/?p=1520.
Can anyone who participated in the vDR1.2 / ESX4 U2 beta confirm whether this bug still exists?
