It should be harmless to run a volume dump. his does Not mean there is a useful backup until it has been successfully restored and used.
Several times i have been asked to help when a "backup" was made and it had problems when the restore was tried.
I tell everyone that until a backup is reloaded and verified, all that exists is some media with questionable content.
Suggest you build a test volume with the same kinds of datasets you will have on a "real" volume, dump it, restore, and verify that the data is intact.
Hope this helps,