{"uid":"cap_Nz8YNoeK1Dksj4TnAZDmb","slug":"raid-capacity-calculator-e3cdc28f","name":"RAID Capacity Calculator","description":"RAID 0/1/5/6/10 and ZFS RAID-Z usable capacity, efficiency, fault tolerance, write penalty and rebuild read-error risk.","url":"https://data-calc.x402tookit.com/raid-capacity?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":["level","disks","diskTb"],"properties":{"disks":{"type":"integer","description":"Number of disks in the array, 1 to 128"},"level":{"type":"string","description":"One of jbod, raid0, raid1, raid5, raid6, raid10, raidz1, raidz2, raidz3"},"diskTb":{"type":"number","description":"Capacity of each disk in decimal terabytes (1 TB = 10^12 bytes), 0.001 to 1000"},"spares":{"type":"integer","description":"Hot spares, not counted in capacity (default 0)"},"ureBits":{"type":"number","description":"Unrecoverable read error rate as 1 error per this many bits read (default 1e14 consumer; enterprise 1e15)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"asOf":{"type":["null","string"]},"disks":{"type":["null","number"]},"label":{"type":["null","string"]},"level":{"type":["null","string"]},"rawTb":{"type":["null","number"]},"diskTb":{"type":["null","number"]},"source":{"type":["null","string"]},"spares":{"type":["null","number"]},"reasons":{"type":["array","null"],"items":{"type":"string"}},"rebuild":{"type":["null","object"],"properties":{"terabytesRead":{"type":["null","number"]},"ureOneErrorPerBits":{"type":["null","number"]},"probabilityOfReadError":{"type":["null","number"]}}},"summary":{"type":["null","string"]},"verdict":{"type":["null","string"]},"degraded":{"type":["boolean","null"]},"usableTb":{"type":["null","number"]},"usableTiB":{"type":["null","number"]},"disclaimer":{"type":["null","string"]},"notChecked":{"type":["array","null"],"items":{"type":"string"}},"faultTolerance":{"type":["null","number"]},"efficiencyPercent":{"type":["null","number"]},"randomWritePenalty":{"type":["null","number"]},"disksTotalInstalled":{"type":["null","number"]},"faultToleranceBestCase":{"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_PZ2fBCPCb50NKaVcimqzO","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 usable capacity, storage efficiency, fault tolerance, write penalty, and rebuild read-error risk for RAID 0/1/5/6/10 and ZFS RAID-Z arrays.","exampleAgentPrompt":"What's the usable capacity, storage efficiency, write penalty, and rebuild read-error risk for a RAID 6 array with 10 disks at 4TB each, using consumer-grade drives?","exampleUseCases":[{"title":"NAS storage planning for home lab","prompt":"I'm building a NAS with 6 x 6TB drives and want to use RAID-Z2 — how much usable space will I get, what's the efficiency, and how risky is a rebuild if I lose a drive?"},{"title":"Enterprise SAN capacity sizing","prompt":"We're configuring a RAID 6 array with 12 x 8TB enterprise drives and 2 hot spares. What's our usable capacity in TB, storage efficiency, fault tolerance, and rebuild read-error probability using an enterprise URE rate of 1e15?"},{"title":"RAID level trade-off comparison","prompt":"Compare RAID 5 and RAID 6 for me with 8 disks at 4TB each — I want to see the usable storage, efficiency, write penalty, and how likely a read error is during a rebuild on consumer drives."}],"resultDescription":"Returns a structured JSON object containing: usable capacity in decimal TB and binary TiB, raw total TB, efficiency percentage, fault tolerance (number of drives that can fail), write penalty, degraded state indicator, rebuild statistics including total terabytes read and probability of an unrecoverable read error, a human-readable summary, verdict, and disclaimer. Also includes the RAID level label, disk count, disk size, and spare count echoed back for verification.","failureModes":["Invalid RAID level string returns error — must be one of jbod, raid0, raid1, raid5, raid6, raid10, raidz1, raidz2, raidz3","Insufficient disk count for chosen RAID level (e.g. RAID 6 requires at least 4 disks) returns validation error","Disk count outside 1–128 range returns parameter error","Disk size outside 0.001–1000 TB range returns parameter error","Missing required query parameters (level, disks, diskTb) returns 400 bad request","Payment failure or expired x402 token returns 402 payment required"],"whenToPreferThis":"Choose this endpoint when you need a quick, authoritative calculation of RAID or ZFS RAID-Z usable capacity and risk metrics without manually applying formulas. It is ideal for capacity planning workflows, storage system design automation, comparing RAID levels, or evaluating rebuild risk before provisioning. Prefer it over general-purpose math tools when the RAID-specific logic (write penalty, URE rebuild probability, RAID-Z parity math) is needed in structured, machine-readable form.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T13:14:25.399Z","isFirstParty":false,"canonicalSlug":"raid-capacity-calculator-e3cdc28f"}