Live tool

IOPS Sizing Helper

Estimate read/write IOPS mix and throughput targets from practical storage workload assumptions.

Live 1 performance estimates Storage / RAID Helper Storage Performance IOPS Planning Throughput Estimation
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Input

Estimate storage workload shape from IOPS target, read/write mix, and average I/O size.

Reset

Result

Planning-level IOPS mix and throughput estimate from the selected workload assumptions.

Input 10,000 target IOPS · 70% read · 30% write · 8 KB I/O
Total IOPS 10,000
Read IOPS 7,000
Write IOPS 3,000
Throughput 78.13 MB/s
Profile Balanced mix · small-block

What this means

This workload shape implies about 7,000 read IOPS and 3,000 write IOPS, with an estimated throughput target of 78.13 MB/s.

The throughput estimate is derived from target IOPS multiplied by average I/O size. This is a planning approximation, not proof of real-world storage behavior.

Use this to frame early storage requirements, shortlist service tiers, or sanity-check whether a workload is mostly throughput-driven or IOPS-driven. Do not mistake it for benchmark truth.

Common presets

OLTP 10k IOPS Read-heavy 25k IOPS Write-heavy 15k IOPS Backup / ingest

IOPS sizing quick guide

IOPS alone means very little without workload mix and block size. Anyone quoting raw IOPS without that context is hand-waving.

Read / write mix

A 90/10 read-heavy workload and a 30/70 write-heavy workload are not operationally equivalent, even with the same total IOPS target.

Block size matters

Larger I/O sizes push more throughput per operation. Small-block workloads are often more purely IOPS-sensitive.

Planning only

This is a workload-shape helper, not a benchmark engine. Real latency, queue depth, caching, and storage design still matter.

Related tools

Continue into adjacent storage planning helpers.

Open RAID Capacity Estimator Open Usable Storage Calculator