https://www.theregister.co.uk/2019/08/26/lun_sans_analysis/

Comment If you mention Storage Area Network and Logical Unit Numbers to IT professionals of a certain vintage, you are likely to encounter eye rolling and invective. The least unprintable of the epithets you'll hear may include "outdated," "pain to manage," and "an impediment to getting real work done."

Are they, though? SANs are often the storage infrastructure underpinning critical business applications. You'll find them serving data to e-commerce web apps, accounting software, CRM systems, and other vital tools. SANs are flexible, resilient, and clearly not disappearing any time soon, so why do some IT practitioners loathe them?