On 12 Jan 2011 at 22:28, Curt @ Atari Museum wrote:
  The datacenter was always at 62 degree's, after
working 4-5 hours in
 there, your knuckles started to stiffen up and you'd feel the cold
 from the floor come up into your shins... ah.... good times, good
 times :-)      I loved the quietness, all you heard was the sounds of
 fans whirling away, it was a deafening kind of quiet background noise,
 I miss that. 
The previous generation had lots of 7 and 9 track tape drives.  The
vacuum pumps in those were anything but quiet, particularly if you
had 16 or 24 or more of the damned things.  It was like a very loud
white noise (maybe 80 dB or so); you had to raise your voice above a
normal conversational level to be heard.  Over an 8 hour session, you
felt that your nerves had been scrubbed raw.
Oddly enough, the CPU was quiet--it used water for the heat
exchanger; no air.
Printers and card readers could get to be loud, but they weren't
going all the time and the printers had acoustic hoods.
--Chuck