this actually happened to a Dell PowerEdge server:

as the office environment expanded and OSes / workstations were upgraded
the company was moved to a Domain from a workgroup

a Dell PowerEdge Server was ordered with Server 2003 standard and the required CALs were purchased
and most of the workstations were pulled and new shiny XP -Pro boxes were deployed
with only a couple of the 2K boxes remaining

after all was said and done that nice shiny new PowerEdge server was stuffed into a non-ventilated, closed & locked cabinet (about the size of an average kitchen cabinet)
several months later after summer was in full swing with 30C + days the IT guy starts getting repeated "warning emails"

Lo and behold Drive 0 was cooked and seized

a new HDD was ordered and installed

when I arrived the day it was being changed out
the dead disk had been sitting on the repair table for a little over 30 min.
when I tried to pick it up it burned me

after the repair, the server was stuffed back into the same cabinet with the goal to find it a new home

about 6 months later it was moved into the phone closet (a much bigger space)
it's still running today as BDC for the Domain as a newer 2008 server was ordered a few years later

but it could have been a worse disaster,
both Drive 0 and 1 could have fried necessitating a full rebuild.