// multi-utility computation suite · offline · instant · precise
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│ [c] calcalyst_ │
│ computation suite │
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dev.cli-disk-iops Calculator
Calculates required disk IOPS from database write-ahead log volume, index maintenance, and checkpoint frequency in a CLI tool and script development context. SSD IOPS range from 3,000 (gp2) to 64,000 (io2 Block Express) — IOPS limits cause query latency spikes when the queue fills, often before CPU or memory is saturated.
Inputs
Tps
Reference formula or conversion factor shown for context.
Io Per
Reference formula or conversion factor shown for context.
Lat
Reference formula or conversion factor shown for context.
Results
required IOPS
IOPS (input/output operations per second) -- storage throughput capacity. SSDs: 10,000-500,000+ IOPS. HDDs: 50-200 IOPS. Critical for database performance.
I/O queue depth
The computed depth.
MB/s (4KB blocks)
Throughput in megabytes per second.
daily p99 budget
99th percentile latency -- only 1% of requests are slower. Captures tail latency that affects the worst-case user experience.
throughput (MB/s)
Amount of work completed per unit time — requests per second, MB/s, or transactions per second.