[ODAVP] How do you make backups of domains & Dom0?

Hi all,

I want to ask you how do you make a backup of following as a small survey:

  - domain u

  - oda base

  - domain 0

For domU and oda base, do you take an online backup? I understand there is a useful document below and offline backups are recommended, but still I want to know if there is a precedent.

ODAVP: HowTo backup/restore your VM Guest (ドキュメントID 1633166.1)

For dom0, how do you take its backup? Do you do it as a usual system backup? (eg: using third party products like Acronis, etc)