Apple quietly discontinued the Xserve RAID →
https://marco.org/2008/02/19/apple-quietly-discontinued-the-xserve-raid
“The what?” Exactly.
As far as I can tell, Apple only ever sold one of these… to Next New Networks (more specifically, Emil). It’s pretty, but prohibitively expensive for nearly anyone — even server buyers.
I know it as “the $12,000 hard drive upstairs”.