What storage type should I choose?

[popey]

I got Hitachi hus-130 array with FC and I'm little confused about choosing storage type. I want to use three of the features: shared storage for online migration,snapshot and backups. What storage type should I focus on?

 

[aaron]

shared storage for online migration,snapshot and backups

If you want shared and snapshots on an external storage, you have to go with a NFS or Samba/Cifs share and store the disks as qcow2 files.

You could use iSCSI LUNs in two ways:
* For each VM disk one LUN but the snapshotting would need to happen on the storage.
* use one big LUN with thick LVM as shared storage, but you won't have snapshots.


Backup is storage agnostic as it is using qemu to get access to the block device to back up.