Data Redundancy

Question 1

What does RAID (Redundant Array of Independent Disks) do?

Answer 1

Combines multiple physical storage devices into a single logical storage device recognized by the operating system

Question 2

What does RAID 0 do?

Answer 2

Provides data striping across multiple disks to improve performance

Question 3

What does RAID 1 do?

Answer 3

Provides redundancy by mirroring data identically on two storage devices

Question 4

What does RAID 5 do?

Answer 4

Stripes data with parity, using at least three storage devices

Question 5

What does RAID 6 do?

Answer 5

Similar to RAID 5 but includes double parity data and requires at least 4 storage devices

Question 6

What does RAID 10 do?

Answer 6

Combines RAID 1 (mirroring) and RAID 0 (striping), featuring mirrored arrays in a striped setup

Question 7

What does Failure-resistant do?

Answer 7

Resists hardware malfunctions through redundant storage devices (e.g., RAID 1)

Question 8

What doe Fault-tolerant do?

Answer 8

Allows continued operation and quick data rebuild in case of failure (e.g., RAID 1, RAID 5, RAID 6, RAID 10)

Question 9

What does Disaster-tolerant do?

Answer 9

Protects data against catastrophic events by maintaining it in independent zones (e.g., RAID 1, RAID 10)