Linked by Thom Holwerda on Mon 30th Nov 2009 23:45 UTC
Oracle and SUN Yesterday (today if you're in the US), Sun released the latest version of its virtualisation solution, VirtualBox 3.1. Among speed improvements and other smaller features, the biggest news is that Virtualox 3.1 introduces something called teleportation: you can move running VMs between machines - servers or clients, different architectures, different host operating systems, it doesn't matter to VirtualBox. Coincidentally, this reminded me of an idea I once had about moving running applications between machines.
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"You store the actual VM image on shared storage (NFS, CIFS, iSCSI, etc). It's only the in-use memory that is transported from one host to the other.

And what if I need to change/migrate the area in that such VM image is stored ? Is there a way to move it having the VM running ? - this is my understanding of "VM transportation", not only the instance, but the image too.

Then you use storage clustering and multipathing. ;)

Would you really want to try and migrate a 10 GB OS+apps VM image? Even if you trimmed it down to the bare essentials, it would still be more than just moving the used RAM around.

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