Data Redundancy

Question 1

What is a RAID?

Answer 1

Redundant Array of Independent Disks

combine multiple physical storage devices into a single logical storage device

Question 2

What is RAID 0?

Answer 2

provides data striping across multiple disks, and it’s used to increase your performance

Key word: Striping

Question 3

What is RAID 1?

Answer 3

Mirrors data for redundancy across two drives or SSD’s

Keyword: Mirroring

Question 4

What is RAID 5?

Answer 4

Stripes data with parity, using at least three storage devices

Key word: Striping with parity

Question 5

What is RAID 6?

Answer 5

Uses data striping across multiple devices with pieces of parity data

Key word: striping with double parity

Question 6

What is RAID 10?

Answer 6

combine the advantages of a RAID 1 and a RAID 0 into a single RAID array.

Key word: Striped array of mirrored arrays

Question 7

What is Failure-Resistant?

Answer 7

Use of redundant storage to withstand hardware malfunctions without data loss

Question 8

What is Fault-Tolerant?

Answer 8

Use of RAID 1, 5, 6 & 10 for uninterrupted operation during hardware failures

Question 9

What is Disaster-Tolerant?

Answer 9

Protects data from catastrophic events