RAID calculator
RAID capacity and risk calculator
Choose a RAID level, disk count, disk size and hot spares to estimate usable storage and overhead.
The comparison table shows RAID 0, 1, 5, 6 and 10 side by side with simplified yearly and rebuild-window risk indicators.
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The tool runs directly in the browser and is ready for quick checks without installing software.
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Input can be cleared and recalculated immediately, which is useful for repeated small tasks.
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Use fullscreen mode when you need more space for long text, structured data or large result blocks.
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Copy buttons are available on generated output so results can be reused in code, documents or support chats.
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Most operations are deterministic: the same input and options produce the same output.
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For sensitive content, prefer local browser tools and review the result before sharing it further.
