Two things: I think people forget (or don’t know) that adding data storage system to your architecture also involves management, scaling, retention, and backup

Two things: I think people forget (or don’t know) that adding data storage system to your architecture also involves management, scaling, retention, and backup. It’s not free. And second, sometimes you do need to invest in storage to permit failover or to minimize latency but people do it for traffic when they really have little traffic. A server from 20 years ago could push a lot of traffic and systems have gotten only beefier.