Tks for your advice.
Follows were the result of googling;
A Tutorial on Using Rsync
Last updated on November 20th, 1999
Easy Automated Snapshot-Style Backups with Linux and Rsync
How to setup rsync for anonymous mirroring - Chapter 2:
Any injection? TIA. Which of the above is more appropriate to my application?
My top preference is to have replication on the USB enclosure whenever a copy of file is saved on local HD (PC HD). It'll save my work to run rsync periodically creating backup on the enclosure.