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RAID Calculator

Calculate usable capacity, fault tolerance, and efficiency for common RAID levels

RAID Level

Distributed parity provides fault tolerance for one drive failure.

Number of Drives(min 3)

Drive Capacity

Usable Capacity2.93 TB

Raw Capacity3.91 TB

Storage Efficiency75.0%

Drives That Can Fail1

Read PerformanceGood

Write PerformanceModerate

RAID LevelRAID 5 — Striping with Parity

ExcellentGoodModerate