Date: Sat, 15 Nov 1997 16:14:06 -0500 (EST) From: Dev Chanchani <dev@wopr.inetu.net> To: freebsd-isp@FreeBSD.ORG Subject: Re: Power Message-ID: <Pine.BSF.3.95q.971115161335.17415B-100000@wopr.inetu.net> In-Reply-To: <Pine.BSF.3.95q.971115130536.14527A-100000@wopr.inetu.net>
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Thanks everyone, I have received many great replies. I will do some surfing and come up with a better model which I would be happy to share. Thanks again! On Sat, 15 Nov 1997, Dev Chanchani wrote: > > We had an extended power outage last night. After realizing that our UPS's > would not keep our network up for the black-out, I ran to sears with a > credit card and bought a Craftsman generator. > > My lesson in power began :) > > I was wondering if anyone has been through this and could help me on a > couple of points: > > We have our servers, switches and routers plugged into APS UPS's (600's > and 650's). The UPS's are plugged into surge protectors. The surge > protectors are plugged into 15 AMP 12 guage 100 ft extension coards. We > ran the extension cords (took them out of the wall) and plugged them into > the generator. The 650 UPS could not take it, it was flipping between > generator power and UPS power every second. So... my questions are as > follows: > > 1. Can you plug a UPS -> Surge protector -> generator > 2. Are there any specifics I should look for when planning the power setup > of new servers and racks. > 3. How much output does a genarator need per server (as a rule of thumb)? > 4. Was the UPS switching from internal power to external power because the > generator power was fluctuating, not enough power, etc? > > If anyone has experience with this type of stuff, any help and information > would be greatly appreciated. > > Thanks in advance! > > PS: To anyone who does not have experience in this, you might want to take > a look, because its not fun to learn these things in total darkness in a > ice storm.. ;) > >
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