1.Hourly rsync application software betw'n production and DR 2. Bourne shell script will detect which is production and which is DR server, 3. Monitor heart beat between Production server and Dr server; 4. As production server fails, DR server will become production server; DR server's DR script will be erased and replaced by production server's Production script. How best the above could be accomplished ? I thankBourne Shell experts in advance for coding and their advice.