Which of the following is not part of a disk drive: platters, arms, controller, or fan?
Answer: Fan
What is the flying height of modern disk heads?
Answer: 15 nanometers
True or false: The clicking sound coming from disk drives is caused by the head touching the media.
Answer: False. It's the sound of the actuator moving.
What does logical block addressing provide?
Answer: Addressing by sector number in a flat address space, as opposed to having to use cylinders, tracks, and sectors
Where is disk throughput greater: inside tracks or outside tracks?
Answer: Outside tracks
What is MTBF used for?
Answer: MTBFis used to predict the failure rates for many disk drives.
True or false: Multiple applications can access different partitions on a disk drive without regard for performance.
Answer: False
How often should tape heads be cleaned?
Answer: Every 30 hours of operation
True or false: Data compression always cuts the time it takes to run backup in half.
Answer: False. It depends on the data's compressibility.
What are the two major types of tape technologies used in UNIX and Windows environments?
Answer: Linear and helical scan
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