Erasure Coding Overhead Calculator
Equal-size shards: integer k=1–1,000, m=1–1,000. Raw capacity >0 to 1,000,000 TB. Overhead=m/k; parity share=m/(k+m); effective=raw×k/(k+m). Optional transfer and rate must both be supplied and positive (≤1,000,000 GB and MB/s). Hours=GB×1,000/MB/s/3,600 using decimal units. This is only the time for your assumed transfer, not a prediction of recovery time, performance or data durability.
A QUICK WALKTHROUGH
How to use this tool
- Equal-size shards: integer k=1–1,000, m=1–1,000. Raw capacity >0 to 1,000,000 TB. Overhead=m/k; parity share=m/(k+m); effective=raw×k/(k+m). Optional transfer and rate must both be supplied and positive (≤1,000,000 GB and MB/s). Hours=GB×1,000/MB/s/3,600 using decimal units. This is only the time for your assumed transfer, not a prediction of recovery time, performance or data durability.
- Calculate
Erasure Coding Overhead Calculator
Equal-size shards: integer k=1–1,000, m=1–1,000. Raw capacity >0 to 1,000,000 TB. Overhead=m/k; parity share=m/(k+m); effective=raw×k/(k+m). Optional transfer and rate must both be supplied and positive (≤1,000,000 GB and MB/s). Hours=GB×1,000/MB/s/3,600 using decimal units. This is only the time for your assumed transfer, not a prediction of recovery time, performance or data durability.
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GOOD TO KNOW
Common questions
Erasure Coding Overhead Calculator
Equal-size shards: integer k=1–1,000, m=1–1,000. Raw capacity >0 to 1,000,000 TB. Overhead=m/k; parity share=m/(k+m); effective=raw×k/(k+m). Optional transfer and rate must both be supplied and positive (≤1,000,000 GB and MB/s). Hours=GB×1,000/MB/s/3,600 using decimal units. This is only the time for your assumed transfer, not a prediction of recovery time, performance or data durability.