On Sun, 5 Apr 2009, Lee Revell wrote: > On Sun, Apr 5, 2009 at 7:54 AM, Ric Wheeler <ricwheeler@xxxxxxxxx> wrote: > > One thing to point out here is that there are a lot of "servers" in high end > > data centers that do not have UPS backup. Those racks full of 1U and 2U > > boxes that are used to make "grids", "clouds" and so on often are built with > > as much gear as you can stuff in a rack - no batteries or UPS to be seen, so > > they are really quite similar to the normal desktop or home systems that we > > normally run at home :-) > > These days even bargain basement data centers provide UPS functionality for > you, via generator backup and A/B power. I have seen an installation having generator backup, but with another serious flaw --- if someone plugged a computer causing short-circuit, it turned off the circuit breaker for the whole rack :) Mikulas > Lee -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
