{"uid":"cap_OJfup-tkfDDw2X-kO_JRV","slug":"systems-capacity-calculators-peak-load-unit-sizing-redundancy-planner-f7845120","name":"Systems Capacity Calculators – Peak Load Unit Sizing & Redundancy Planner","description":"Units needed for a peak load at a target utilisation plus N+k redundancy, utilisation after failures, and growth projection.","url":"https://data-calc.x402tookit.com/capacity-planning?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["peakLoad","capacityPerUnit"],"properties":{"months":{"type":"integer","description":"Projection horizon in months, 1 to 120 (default 12)"},"peakLoad":{"type":"number","description":"Peak load in any unit (requests/s, jobs/hour, GB/s), above 0"},"spareUnits":{"type":"integer","description":"Extra units kept so the cluster survives failures (N+k, default 1)"},"capacityPerUnit":{"type":"number","description":"Maximum load ONE unit (server, node, pod) handles in the same unit, measured at its limit"},"growthPercentPerMonth":{"type":"number","description":"Compound monthly growth of the peak load for a projection (default 0)"},"targetUtilizationPercent":{"type":"number","description":"Highest steady utilisation you will run at, 10 to 100 (default 70)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"asOf":{"type":["null","string"]},"source":{"type":["null","string"]},"reasons":{"type":["array","null"],"items":{"type":"string"}},"summary":{"type":["null","string"]},"verdict":{"type":["null","string"]},"degraded":{"type":["boolean","null"]},"disclaimer":{"type":["null","string"]},"notChecked":{"type":["array","null"],"items":{"type":"string"}},"spareUnits":{"type":["null","number"]},"unitsTotal":{"type":["null","number"]},"unitsForLoad":{"type":["null","number"]},"usableCapacityPerUnit":{"type":["null","number"]},"headroomPercentOverPeak":{"type":["null","number"]},"utilizationNormalPercent":{"type":["null","number"]},"loadAtWhichTotalSaturates":{"type":["null","number"]},"utilizationAfterLosingSparesPercent":{"type":["null","number"]},"utilizationAfterLosingOneUnitPercent":{"type":["null","number"]},"utilizationAtTargetWithNeedOnlyPercent":{"type":["null","number"]}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_GEofLIrAXGbnhfqyz5pGx","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Calculates how many units (servers, nodes, pods) are needed for a peak load at a target utilization, with N+k redundancy, plus utilization after failures and growth projection.","exampleAgentPrompt":"How many servers do I need to handle a peak load of 5,000 requests/s if each server handles up to 800 requests/s, I want to run at no more than 70% utilization, keep 2 spare units for redundancy, and project out 12 months with 3% monthly growth?","exampleUseCases":[{"title":"Kubernetes node sizing for peak traffic","prompt":"We're expecting a peak of 20,000 jobs per hour on our Kubernetes cluster and each node handles 2,500 jobs per hour at its limit. I want to run at 75% utilization max and keep 1 spare node. How many nodes do I need total?"},{"title":"Failure scenario utilization check","prompt":"I have a cluster handling 1,200 requests/s at peak, with each server capped at 500 requests/s, running at 70% target utilization with 2 spare servers. What does our utilization look like if we lose both spare servers simultaneously?"},{"title":"18-month capacity growth projection","prompt":"Our current peak load is 50 GB/s and each storage node handles 8 GB/s. We want 80% max utilization, 1 spare node, and we're growing at 4% per month. Can you project how many nodes we'll need over the next 18 months?"}],"resultDescription":"Returns the number of units needed just for the load, total units including spares, usable capacity per unit, normal operating utilization percent, utilization after losing spare units, headroom percent over peak, the load level at which the total cluster saturates, and optionally a month-by-month growth projection showing when additional units will be required.","failureModes":["peakLoad or capacityPerUnit not provided — returns 400/error","peakLoad <= 0 or capacityPerUnit <= 0 — invalid input error","targetUtilizationPercent outside 10–100 range — rejected","months outside 1–120 range — rejected","growthPercentPerMonth is very large causing overflow in projection — may return extreme values or error","Network or service unavailability — no response or timeout"],"whenToPreferThis":"Use this endpoint when you need to determine infrastructure unit counts for a given peak load with a specific utilization ceiling and redundancy requirement (N+k). 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