RAID Configuration for Maximum Speed and Storage Capacity

RAID Types for Joe's Desktop with Three Hard Drives

Question

Joe, a user, wants his desktop RAID configured to allow the fastest speed and the most storage capacity.

His desktop has three hard drives.

Which of the following RAID types should a technician configure to achieve this?

Answers

Explanations

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RAID (Redundant Array of Independent Disks) is a technology that combines multiple physical hard drives into a single logical unit to provide increased performance, fault tolerance, or both.

There are several types of RAID configurations, including RAID 0, RAID 1, RAID 5, and RAID 10, each with its own advantages and disadvantages.

RAID 0 is a striped configuration that distributes data evenly across two or more hard drives, improving read and write performance. However, it does not provide any fault tolerance, and a single hard drive failure can result in the loss of all data on the array.

RAID 1 is a mirrored configuration that writes data to two or more hard drives simultaneously, providing fault tolerance. However, it does not offer any performance benefits, and it requires at least two hard drives, reducing overall storage capacity.

RAID 5 is a parity-based configuration that distributes data and parity information across three or more hard drives, providing both performance and fault tolerance. It requires at least three hard drives and can withstand a single hard drive failure without losing data.

RAID 10, also known as RAID 1+0, combines the benefits of RAID 1 and RAID 0. It requires at least four hard drives, and data is mirrored across two or more sets of striped hard drives. It provides both performance and fault tolerance, allowing multiple hard drive failures without losing data.

Given that Joe wants the fastest speed and most storage capacity with three hard drives, RAID 0 may provide the fastest speed but does not offer fault tolerance. RAID 1 would provide fault tolerance but would reduce overall storage capacity. RAID 5 provides both performance and fault tolerance but requires at least three hard drives. RAID 10 provides both performance and fault tolerance and requires at least four hard drives.

Therefore, the RAID type that a technician should configure to achieve Joe's requirements is RAID 0 if speed is the most important factor, or RAID 10 if both speed and fault tolerance are equally important.