RAID

Question 1

Explain RAID 0?

Answer 1

Striping without Parity. Spreads the data in a fixed order among all the disks. Its main advantage is to improve performance but Zero Redundancy

Question 2

Explain RAID 1?

Answer 2

Mirroring. Duplicates the data disk to a second disk. Each write operation is duplicated on the second disk in the set, introducing a small performance overhead.

Question 3

Explain RAID 5?

Answer 3

Striping with Distributed Parity. Writes error checking information across all the disks in the array. All normal write operations suffer reduced performance

Question 4

Explain RAID 10?

Answer 4

Combination of both RAID 0 (Striping without Parity) and RAID 1 (Mirroring). This configuration offers excellent fault tolerance but carries the same 50% disk overhead that mirroring does

Question 5

You are installing a Redundant Array of Independent Disks 1 (RAID 1) and want to ensure that the controller card is not a single point of failure. What technique do you need to employ in this configuration?

Answer 5

Disk Duplexing