I have a XenServer 5.6 Free setup with 5 VMs (Windows and Linux) using about 1.5TB of directly attached storage.
Because our virtualisation needs have grown a bit, we currently are preparing a faster XenServer 6.0 Free machine with more RAM and a more storage. Again, directly attached disks.
How can I migrate the VMs between XenServer machines?
I don't need to keep the machines up and running during migration, but using VM export and import would definitely take too long.
Would making a VM with the same configuration on new host and dd'ing the LVM volume over network be the only quick and least painful solution? Are there any "gotchas" I should look out for when doing something like this? The old machine has an AMD Phenom II, the new has Intel Xeon E5 CPUs.
Answer
I think that the fastest way to do the migration is to use a disk imaging software. In the company i work almost all the machines are hosted in XEN and VMWARE servers. We are facing this situation very often. We use Active@ Boot Disk that is very fast and reliable. At first boot with the cd in the server you want to transfer and backup to a network folder your server image. Then at the new XEN server, boot and restore that image to the new server. I hope this help.
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