It appears "their data center" is owned and operated by Consonus Technologies, and that WestHost does not own or operate a data-center facility.
The bulk of the wording of the outage notice posted at WestHost was actually a cut 'n paste from an email Consonus sent to WestHost, (re: Inergen release and drive failures).
Now, about INERGEN damaging drives or other hardware; form your own opinion -- I've formed mine based on the following:
According to TYCO, (which manufactures and markets fire suppression systems and a "gaseous agent" under the registered trademark name INERGEN; "INERGEN agent is a mixture of three inerting (oxygen diluting) gases: 52% nitrogen, 40% argon, and 8% carbon dioxide."
The marketing material goes on to say: "..INERGEN agent will not threaten software or hardware because it does not break down to form damaging acidic byproducts..."
Then further explains that INERGEN does not liquefy, (even when compressed, it is still "gas" -- which means it could not have squirted, sprayed, or poured onto hardware). INERGEN works by depleting the oxygen in a [closed] room.
I wonder what really happened...?.?.?