How Much Hard Disk Space Is Required for Recording?
The required disk space depends mainly on bandwidth, sample format, and number of channels.
A quick rule of thumb:
IQ recording size ≈ 2 × sample rate × bits per sample
Below are typical values for 1 channel (IQ):
Typical disk usage per hour:
| Bandwidth | 8‑bit IQ | 16‑bit IQ | 24‑bit IQ |
|---|---|---|---|
| 250 kHz | ~1.8 GB/h | ~3.6 GB/h | ~5.4 GB/h |
| 1 MHz | ~7.2 GB/h | ~14.4 GB/h | ~21.6 GB/h |
| 5 MHz | ~36 GB/h | ~72 GB/h | ~108 GB/h |
| 10 MHz | ~72 GB/h | ~144 GB/h | ~216 GB/h |
| 25 MHz | ~180 GB/h | ~360 GB/h | ~540 GB/h |
gosignals with Option Wideband Recording
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Add about 10% extra if FFT data is stored.
This speeds up load times when the data needs to be displayed later
Last update on 2026-03-26 by Rolf Haenggi.