OK, after quite some trying I have hit a brick wall. I have been unable
to get parallel restore to work with Windows threading. No doubt I am
missing something, but I really don't know what. Unless someone can tell
me what I am doing wrong, I have these possibilities:
* run parallel steps on Windows in separate processes rather than
threads, similar to what we do in the server, or
* disable parallel restore on Windows for now.
Time is unfortunately running very short.
Latest attempt is attached.
cheers
andrew