Marshall wrote:
>This is of course off-off-topic, but I would suspect the room
>temperature ultrasonic
>misters, not dry ice or wood smoke.
>
>Regards
>Marshall
Concur.
As anyone who works with air conditioning knows, ultrasonic are
the low maintenance option for your humidifier units anyways.
A lot of your datacenters have those 
There are also doors between the plants and NOC and the server
rooms ...
Having them external to the AC and pumping visible fog out into
the room instead of invisible into the air feeds is unusual, but
if the resulting humidity (in the NOC, not the server rooms)
is normal it's no big deal. You can have the floor covered in
an inch of water and the air be perfectly safe humidity for
systems (just don't drop a live power cable in the water...).
I wouldn't do this personally, but if done right it should be safe.
This discussion about plants, waterfalls and humidity is getting more
and more off-tropic...
-george william herbert
gherbert@retro.com
--Johnny
Johnny writes:
This discussion about plants, waterfalls and humidity is getting more
and more off-tropic...
Humidity is not off topic for a general or specific datacenter
conversation - it's a fairly routine issue in facilities.
NANOG isn't facilities focused but I think that it comes up
enough (we're not hosting routers in closets anymore) that it's
legit for some discussion.
The plants and waterfalls is probably drifting a bit far afield,
though...
-george william herbert
gherbert@retro.com
This discussion about plants, waterfalls and humidity is getting more
and more off-tropic...
Humidity is not off topic for a general or specific datacenter
conversation - it's a fairly routine issue in facilities.
*woosh*
tropic... not topic. It's a joke. 
D'oh. Serves me right for trying to reply on NANOG while
composing and sending a politically sensitive nastygram to
(vendor redacted) service and escalation.
-george
George William Herbert wrote:
Johnny writes:
This discussion about plants, waterfalls and humidity is getting more
and more off-tropic...
Humidity is not off topic for a general or specific datacenter
conversation - it's a fairly routine issue in facilities.
*woosh*
tropic... not topic. It's a joke.
George William Herbert wrote:
Johnny writes:
This discussion about plants, waterfalls and humidity is getting more
and more off-tropic...
Humidity is not off topic for a general or specific datacenter
conversation - it's a fairly routine issue in facilities.
NANOG isn't facilities focused but I think that it comes up
enough (we're not hosting routers in closets anymore) that it's
legit for some discussion.
The plants and waterfalls is probably drifting a bit far afield,
though...
Perhaps not as far as one might think. I once had to work with a large
data center, which was having a huge condensation and eventual corrosion
problem on one side of the room. No one had made the connection that it
was a shared wall with the main building atrium, which had an indoor
waterfall that made quite an evaporative cooler.
Extra wall insulation solved the problem.