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AJA System Test vs fio: catalog facts
AJA System Test	fio
Free Offered as a free download from AJA's product page.	Free Free and open source.
Windows, macOS	Linux, Command line
Results are given in video terms such as resolution and codec Shows whether a drive can sustain recording and playback	Highly configurable workloads through job files Many I/O engines for different storage paths
Narrow focus on storage speed for video work Product page gives few technical details	Steep learning curve for new users Command-line only, no built-in graphical interface
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-2.0
Not stated if an account is needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.