I have a specific situation where I'm urgently needing to get a linux OS
on top of an existing NSS volume. The existing volume is on a SAN.

I don't have space to migrate all the data from the SAN, then re-setup
the SAN with OES(linux)/NSS partitions.

What I'm hoping to do is literally down the server & SAN. Re-setup the
server with OES (linux) and plug the SAN back in afterwards.

Does anyone have a clue whether doing this will work?

I've read about the loss of attributes problem. That in this situation
isn't going to be an issue - there are no special attributes other than
rights, which I can easily re-apply.