Ian Collins
Tue, 30 Jun 2009 21:58:52 -0700
David Magda wrote:
Or run your systems of DC and get as much backup as you have room (and budget!) for batteries. I once visited a central exchange with 48 hours of battery capacity...On Jun 30, 2009, at 14:08, Bob Friesenhahn wrote:I have seen UPSs help quite a lot for short glitches lasting seconds, or a minute. Otherwise the outage is usually longer than the UPSs can stay up since the problem required human attention.A standby generator is needed for any long outages.Can't remember where I read the claim, but supposedly if power isn't restored within about ten minutes, then it will probably be out for a few hours. If this 'statistic' is true, it would mean that your UPS should last (say) fifteen minutes, and after that you really need a generator.
-- Ian. _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss