Raid

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Last updated 1:00 PM on 8/15/26
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15 Terms

1
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RAID (Redundant Array of Independent Disks)

combines multiple hard drives into a single system to boost speed, provide backups (redundancy), or both.

2
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Striping

Splitting data across drives to boost speed.

3
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Mirroring

Duplicating data on two drives for safety.

4
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Parity

Using smart math to rebuild data if a drive dies.

5
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RAID 0 (Striping)

Pure speed. No safety—if one drive fails, you lose everything.

6
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RAID 1 (Mirroring)

Pure safety. Clones your data onto a second drive.

7
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RAID 5 (Striping + Single Parity)

Good speed + safety. Can survive 1 dead drive.

8
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RAID 5 (Striping + Single Parity)

Good speed + safety. Can survive 1 dead drive.

9
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RAID 6 (Striping + Dual Parity)

Maximum safety. Can survive 2 dead drives.

10
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RAID 10 (Striping + Mirroring)

High speed AND high safety (requires at least 4 drives).

11
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RAID 10 minimum drives

4 drives

12
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RAID 6 minimum drives

4 drives

13
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RAID 5 minimum drives

3 drives

14
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RAID 0 minimum drives

2 drives

15
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RAID 1 minimum drives

2 drives