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RAID calculator determines data protection level, usable capacity, and redundancy. Different RAID levels offer various tradeoffs between speed, capacity, and fault tolerance.

공식

RAID 0: Capacity = n×D; RAID 1: Capacity = D; RAID 5: Capacity = (n-1)×D; etc.

단계별 가이드

  1. 1Enter number of drives and drive capacity
  2. 2Select RAID level
  3. 3Calculate usable capacity and fault tolerance

풀어진 예시

입력
4 drives × 2TB each, RAID 5
결과
Usable: 6TB, Can lose 1 drive
RAID 5 parity stripe

피해야 할 일반적인 실수

  • Confusing hot spare with usable drives
  • Not accounting for RAID rebuild time vulnerability

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