One more thing to watch out for at data centers - fire drills

[sp at iphh.net (Sascha Pollok)]

> http://motherboard.vice.com/read/a-loud-sound-just-shut-down-a-banks-data-center-for-10-hours?utm_source=bbcfb
>
> Releasing inert gas from fire suppression units that were over pressurized 
> resulted in an extremely loud noise ? causing cabinets full of hard drives 
> to vibrate ? which got transmitted to the read ? write heads of the drives.
>
> Amazing sort of outage + data loss, and this time the physical security 
> plant chief gets to write up the RCA.

A quick comment: for the N2 systems we built in our datacenters we added 
mufflers to reduce the noise which raised the price for the system by only 
5%. Totally worth it. Yet many datacenters do not add them.

-Sascha