RAID is a method of combining multiple hard drives to improve performance, redundancy, or both.
Why it matters:
- Protects against data loss if a single drive fails (depending on RAID level).
- Can improve read/write speed for demanding applications.
- Different levels (RAID 0, 1, 5, 10, etc.) balance speed vs. redundancy.
Pro tip: RAID is not the same as a backup — it prevents downtime from drive failure, but doesn’t protect against ransomware or accidental deletion.
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