> Ché Kristo wrote: >> Wow, I was under the impression it only affected residential areas... > > More details at: > http://www.theregister.co.uk/2007/07/24/web_site_outages/ > > Particularly sad is the comment in the article that: > > Redenvelope continued to be unavailable, the same day PR monkeys > issued a press release celebrating the site's "two years of > 100-percent uptime at 365 Main's San Francisco facility." Oops. > > Oops indeed. For some reason the press release now produces a 404 error > ;). Although it's available elsewhere at: > > http://www.prnewswire.com/cgi-bin/stories.pl?ACCT=104&STORY=/www/story/07-24-2007/0004631109&EDATE= > > In answer to the questions about backup power, obviously they have UPS > and generators (as the press release says...). But such backup systems > only get tested rarely, and have an unfortunate tendency to not always > work just when they are needed. No data center can run on UPS for more > than a few minutes even with the largest UPS, so they all need to have > generators.
Nothing can replace batteries. The more the better. Most power solutions should grant at *least* 30 minutes on battery and if not then I would not host my gear there. I just finished installing a 45 minute battery runtime solution with 16,000 VA of power. It is not that costly really to stick in an APC Symmetra SY16K unit when one looks at the cost of downtime. Dennis _______________________________________________ opensolaris-discuss mailing list opensolaris-discuss@opensolaris.org
