On Tue, Mar 15, 2011 at 01:58:00AM +0100, Jerome BENOIT wrote: > Hi ! > > On 15/03/11 01:31, Stan Hoeppner wrote: > >Jason Hsu put forth on 3/14/2011 1:31 PM: > >>How do you protect servers from lightning? > > > >During facility construction: > >www.erico.com/public/library/fep/LT1421.pdf > > > >>What backup power sources do you use to keep them running during power > >>outages? > > > >Generally, one Smart-UPS RT 10KVA RM per rack of 3U/2U/1U servers, UPS > >at the bottom, servers above. > >http://www.apc.com/products/resource/include/techspec_index.cfm?base_sku=SURT10KRMXL6U-TF5&total_watts=1000 > > Just curious: > why the UPS must be at the bottom ? > Probably because they're really heavy. I had a server rack on wheels, and a UPS which had a shipping weight of 172 lbs. No way was I putting that anywhere but the bottom of the rack, for stability reasons.
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