| 1: | Name four uses for backup technology. |
| A1: | Answer: Disaster protection, historical archiving, system migration, data sharing |
| 2: | What is offline storage? |
| A2: | Answer: Storage that cannot be accessed without an administrator's making it available |
| 3: | What does backup metadata do? |
| A3: | Answer: It keeps data about backup operations and tapes. |
| 4: | What does tape rotation do? |
| A4: | Answer: It determines which tapes to use and when. |
| 5: | Explain the difference between incremental and differential backups. |
| A5: | Answer: Incremental backups copy data that has changed since the last backup. Differential backups copy data that has changed since the last full backup. |
| 6: | What is hot backup? |
| A6: | Answer: Hot backup operates while the application system is running. |
| 7: | Name two advantages of backing up over the SAN. |
| A7: | Answer: Excellent performance and centralized backup management |
| 8: | True or false: LAN-free backup requires backup data to move through the application servers being backed up. |
| A8: | Answer: True. An application server reads data from a disk LUNin the SAN, stores it temporarily in memory, and writes it to tape drives in the SAN. |
| 9: | A data mover is used in what kind of SAN-based backup? |
| A9: | Answer: Serverless backup |
| 10: | Why does disk capacity for backup scale and tape capacity not scale? |
| A10: | Answer: Disk can use RAIDand other virtualization techniques to create scalable capacity, whereas tape is limited to the capacity of a single cartridge. |