Hi,
I would like to know if any of you know a solution to periodically
mirror a running (or not) VM from one XenServer host to another, using
some kind of block changes tracking on the vbd's (vdi's?).
I know there are softwares available like PHD Virtual, SEP or
quartersoft alike that do this but:
1) they're quite expensive
2) they need a dedicated appliance (vm) on each host to handle the mirroring
3) and most important they don't use any block change tracking in order
to read only the changed blocks when doing regulary mirrors.
This third point is really a pain as the whole vm image must be read
each time in order to compare what has to be transfered.
Is there any existing solutions, or any plans to bring this feature to
the next versions of XenServer.
I must admit that I was getting mad when I heard that Hyper-V 3 (I want
to avoid using it) has this feature and having tried it myself I must
admit it works amazingly well.
Now that share-nothing migrations are available on XenServer (since 6.1
i think), the lack of this capability is the missing brick to make even
more awesome it is already :)
Any suggestions?
Cheers,
Sébastien
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