Clone disk from UnitiServe 1TB

I'd say "not."  The 2tb version has a lot of other features, most importantly the ability to write files to a Downloads folder.  None of that is on the 1tb version or its hard drive.

So . . . . "not" I strongly believe. 

Ok thank you, and if I use a 1TB hard drive only for backup always with clonezilla?

Thank you very much.

The software has a back up feature, let t do the work.

yes of course, but it is too slow, and I thought that with clonezilla is faster.

I can only try, at best does not work

Thank you very much.

Do the initial backup.  After that, it's just a differential backup.  And who cares if it takes 10 minutes or 30 minutes -- it's working in the background and backing up at 3 am whilst I'm sleeping.

The problem with your plan is, in the event that you need to do a restore . . . how are you going to do it?  I have confidence that Naim will support me if I have a proper backup and need to use it.

Yes this is true, but the differential backup, it has created problems. I had changed from ipad few albums, titles and genres differential backup has started to copy so absurd and incorrect. I do not remember how, but I stopped the backup. I will do the checks.
Thank you.

Yes you are correct -- if the differential backup saves "old versions," you can get exactly what you describe.  I do not recall whether this is optional with the Naim servers -- whether you can tell it not to keep the older versions.  If you do this (changing metadata) infrequently, you could just go into the backup and delete the older version.  Not the smoothest, but it'd work.

I just don't think that a cloned hdd is going to really get you what you need, which is the ability to replace the hdd and get back up and running, very easily.  I doubt that Naim would support it and you'd be left with a do-it-yourself project.