I’ve tested over 100 storage drives and their speeds with this free tool – why I trust it

CrystalDiskMark 9 is a free, open-source tool for testing your HDD, SSD, and flash drive read and write speeds. Here's how it ...
Techno-Science.net

Best Disk Speed Test Apps for Accurate Performance Analysis

What Are Disk Speed Test Apps? Disk speed test apps help measure the overall speed and performance of a hard drive or solid-state drive (SSD) (internal or external) connected to a computer system.
How-To Geek on MSN

I turned a Raspberry Pi into an automated hard drive testing station that messages my phone

A USB dock, automatic checks, and Telegram results simplify drive intake.
Ars Technica

OSX Hard drive speed test utilty / benchmark?

I want to know how fast my hard drive transfer rates are. Is there a (free) utility to test this and get the results in MegaBytes per second. A arbitrary performance number would be meaningless to me.