In article . com,
Dennis@home wrote:
When someone takes one to bits can they look to see how they ensure
mains doesn't get across the disks when the psu melts?

The PSU can burn because you buy another.

The NAS itself is (mostly) trashed by the fire, but you can take the
drives out an put them in a new NAS and read the data.

The idea is to protect the things (data) that can't be replaced, but
simply to replace the things that can.
--
Cheers,
Daniel.