Consider the following backup scheme:
Day 1: Copy to a backup medium all files from the disk.
Day 2: Copy to another medium all files changed since day 1.
Day 3: Copy to another medium all files changed since day 1.
This contrasts to the schedule given in Section 11.6.2 by having all subsequent backups copy all files modified since the first full backup. What are the benefits of this system over the one in Section 11.6.2? What are the drawbacks? Are restore operations made easier or more difficult? Explain your answer.