I managed a few HP C7000 blade systems once in an inadequate environment. They have jet like fans and at the time a firmware bug that meant the fans had two levels: 79% and 100%. Compared to after the firmware was fixed it stayed around 30% at full load and was bearable at least
Oh, man...reminds me of the IBM BladeCenters. Maybe they had 2 fan settings...90% and 100% of a 737 at takeoff. They had an extra cost "office kit" that included baffles and other mods to (hahahahaha) quiet them down enough for an office environment. Maybe knocked it down from a 737 to a Gulfstream G4. Nice kit if buried in a datacenter someplace.
