Design a backup plan for the following scenarios. Assume that each computer has a 500GB disk and that users home directories are stored locally. Choose a backup device that balances cost vs. support needs and explain your reasoning. List any assumptions you make.

a. A research facility has 50 machines. Each machine holds a lot of important data that changes often.

b. A small software company has 10 machines. Source code is stored on a central server that has 4TB of disk space. The source code changes throughout the day. Individual users home directories do not change very often. Cost is of little concern and security is of utmost importance.

c. A home network has two machines. Cost is the most important consideration, and the users are not system administrators.

d. Design a restore strategy for each of the above three situations