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Hard Disk Drive Fundamentals

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Questions and Answers

What is the path traced out by the hard drive read/write head as the disk rotates?

A triangle

A rectangle

A spiral

A circle (correct)

What is the shape formed by the sets of tracks for all the surfaces in a multi-platter disk drive?

A cylinder (correct)

A helix

A cone

A sphere

What is the relationship between the linear velocity of the disk and the constant angular velocity of the drive motor?

The linear velocity decreases with distance from the axis

The linear velocity is constant

The linear velocity is proportional to the square root of the distance from the axis

The linear velocity increases with distance from the axis (correct)

What is the time it takes for the hard-disk read/write head to move from one track to another called?

Seek time (D) Signup and view all the answers

What system performance attribute is most increased by using redundant array of independent disks (RAID)?

Performance (C) Signup and view all the answers

What is the logic used to detect errors in a special fault-tolerant computer system with an array of 3 disks?

Voting system (D) Signup and view all the answers

What is the reason for waiting after the hard-disk read/write head is located over the desired track?

The disk needs to rotate to the beginning of the correct sector (C) Signup and view all the answers

What is the advantage of using mirrored arrays with multiple disks?

Reduced access time for multi-block read (C) Signup and view all the answers

What happens when the data from one disk differs from the other two in a fault-tolerant system?

The data where both match is accepted and the other is flagged as an error (C) Signup and view all the answers

How many disks store exactly the same data in a mirrored array with 4 disks?

All 4 disks (A) Signup and view all the answers

Hard Disk Drive Fundamentals

Choose a study mode

Podcast

Questions and Answers

What is the path traced out by the hard drive read/write head as the disk rotates?

What is the shape formed by the sets of tracks for all the surfaces in a multi-platter disk drive?

What is the relationship between the linear velocity of the disk and the constant angular velocity of the drive motor?

What is the time it takes for the hard-disk read/write head to move from one track to another called?

What system performance attribute is most increased by using redundant array of independent disks (RAID)?

What is the logic used to detect errors in a special fault-tolerant computer system with an array of 3 disks?

What is the reason for waiting after the hard-disk read/write head is located over the desired track?

What is the advantage of using mirrored arrays with multiple disks?

What happens when the data from one disk differs from the other two in a fault-tolerant system?

How many disks store exactly the same data in a mirrored array with 4 disks?

What is the shape formed by the tracks on a single surface of a multi-platter disk drive?

What is the term for the circle traced out by the hard drive read/write head?

In a disk drive with multiple platters, how do the heads on each surface align?

What is the benefit of using a redundant array of independent disks (RAID)?

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