On Mon, Feb 22, 2021 at 12:50 PM Regis M. Donovan <regis-na...@offhand.org> wrote:
> On Thu, Feb 18, 2021 at 07:34:39PM -0500, Patrick W. Gilmore wrote: > > And to put it on topic, cover your EPOs > > I worked somewhere with an uncovered EPO, which was okay until we had a > telco tech in who was used to a different data center where a similar > looking button controlled the door access, so he reflexively hit it > on his way out to unlock the door. Oops. > > Also, consider what's on generator and what's not. I worked in a corporate > data center where we lost power. The backup system kept all the machines > running, but the ventilation system was still down, so it was very warm > very > fast as everyone went around trying to shut servers down gracefully while > other folks propped the doors open to get some cooler air in. > That reminds me of another one... In parts of NYC, there are noise abatement requirements, and so many places have their generators mounted on the roof -- it's cheap real-estate, the exhaust is easier, the noise issues are less, etc. The generators usually have a smallish diesel tank, and then a much larger one in the basement (diesel is heavy)... So, one of the buildings that I was in was really good about testing thier gensets - they'd do weekly tests (usually at night), and the generators always worked perfectly -- right up until the time that it was actually needed. The generator fired up, the lights kept blinking, the disks kept spinning - but the transfer pump that pumped diesel from the basement to the roof was one of the few things that was not on the generator.... W > > --r > > -- The computing scientist’s main challenge is not to get confused by the complexities of his own making. -- E. W. Dijkstra