Majority Quorum Failure Tolerance Calculator

Method, formula and assumptions

Strict majority = floor(configured voters/2) + 1. Subtract all unavailable voters from membership; compare the remaining count with the majority. Maximum unavailable = membership - majority.

Input definitions and supported units

• Configured voting members: Whole-number count, from 1 to 10000; must be positive.
• Already unavailable voters: Whole-number count, from 0 to 10000; zero is supported where the stated method permits it.
• Additional planned unavailable voters: Whole-number count, from 0 to 10000; zero is supported where the stated method permits it.

Worked example with answer

Five voters require three for a strict majority. One failed plus one planned unavailable leaves three: zero margin, with a maximum of two unavailable at once.

How to use the results

Zero margin still meets a count-based majority but has no additional tolerance. Even membership can add no failure tolerance relative to the preceding odd count.

Results retain full precision internally and display up to four decimal places. Very small nonzero results use scientific notation rather than appearing as zero. Check the labels before comparing values across units.

Limitations and references

Membership protocols, data durability, network partitions and failure domains are not simulated. A voter count is not permission to perform maintenance without vendor procedures.

The method is a self-contained arithmetic, geometric or explicitly stated mathematical model. There are no imported tariffs, empirical presets or equipment specifications; measured values and allowances must come from your own process.

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