RAID Types Flashcards

A breakdown of the most commonly used RAID configurations.

1
Q

What does RAID stand for?

A

RAID stands for Redundant Array of Inexpensive (or Independent) Disks.

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2
Q

What is RAID?

A

RAID is a method of implementing redundancy on your hard drives. If one disk fails, the other disk(s) can provide the missing information.

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3
Q

RAID 0

A

Disk striping. With RAID 0, the data is split across the drives with no data redundancy. RAID 0 improves read and write performance by writing to multiple drives at the same time. You need a minimum of 2 drives.

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4
Q

RAID 1?

A

Disk mirroring/duplexing. With disk mirroring, the data is written to both drives involved in the mirror in order to provide data redundancy. Windows 7 supports disk mirroring.

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5
Q

RAID 5

A

Disk striping with parity. With RAID 5 volumes, the data is written to multiple drives along with parity information that is used to help recover data if a single drive fails. RAID 5 needs a minimum of 3 disks.

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6
Q

RAID 10 (Also known as 1+0)

A

RAID 10 is mirrored disk striping. Also known as RAID 1+0 because it is a disk striping while mirorring the data written in the stripe.

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