Migrating Vms from old to new server...Which method?

[BiagioParuolo]

Hi,

I've rent new servers because I have to switch off old server.
Which Is the best method to migrate/move vms to new server? Backup/Restore or creating a temporanery cluster with new and old node, then migrate machine and remove old node?
Are there any performance issue or problem in running vms on new server with different hw thant old server?
Thanks

 

[tom]

you can use backup restore, but if its possible to join the new servers to the existing cluster it will be easier, as you can use the migration features.

issues: if you live migrate KVM guest it could have issues, caused by different cpu´s, use offline migration in this case.

 

[BiagioParuolo]

Thank you for your reply.
Do you mean backup/restore with offline migration ?

 

[tom]

method 1:
backup and restore

method 2:
join the new server and use migration - depending on your setup live or offline (means a poweroff VM).

 

[BiagioParuolo]

Normally, I made snapshoot backups for all type of vms ( Kvm or OpenVz ).

Are Snapshoot good for KVM machines?

 

[tom]

snapshots are quite ok in most cases.

 

[BiagioParuolo]

Other method maybe..

1) create cluster. Master node ( new server ) and Slave node is old server
2) create a backup job because backup snapshots are send to master storage backup folder( is it true ? )

Th

 

[tom]

Other method maybe..

1) create cluster. Master node ( new server ) and Slave node is old server
2) create a backup job because backup snapshots are send to master storage backup folder( is it true ? )

Th

backups are executed per node.