N360 Backup Questions

I use N360 Backup on 3 computers and configure it so the Norton Backup Drives are on a network drive. I figure if my C drive crashes at least the backup files will be on a different physical drive. I have a couple of questions:

 

1) If my C drive were to crash and I reinstalled Windows from scratch, would I be able to access those N360 backup files after reinstalling N360?

 

2) Can I access files backed up with N360 from another computer? i.e. Computer A accesses Computer B’s backed up files.

 

3) Should I periodically copy the entire contents of the raw Norton Backup data to another network drive as a precaution? Will I be able to copy it back and access it if the original network drive crashes? Do I need to copy any other system control type files?