Reason why queue depth of 4 used in benchmarking HDDs

HDDs are benchmarked using a queue depth of no more than 4. This article from SanDisk explains why?

Source: Using high queue depth settings when running IOMeter

About the Author

Yogi

21 years of experience in various layers of software. Primarily experienced in system side software design and development on server management software. Interested in linux development in x86 and arm architecture.