How-To Geek on MSN

Asynchronous vibrations: The physical reason mixing 5400 and 7200 RPM drives ruins your NAS

Here's why you shouldn't mix different speed HDDs on your NAS ...
XDA Developers on MSN

Stop choosing sides – the smartest NAS setup uses both SSDs and HDDs

Even if you're a hardcore data hoarder, you should opt for a hybrid NAS configuration ...