Re: dc servers
jp <[email protected]>
| Newsgroups | gmane.org.operators.internet-access |
|---|---|
| Message-ID | <[email protected]> |
On Sat, Sep 06, 2008 at 05:11:44PM -0500, Frank Bulk wrote: > Wow, that sounds like MacGyver. No MacGyver would do it with ducttape, improvised leyden jars, soldered with thermite, and it would power an AT&T PC 6300. The biggest differences between myself and MacGyver are that I've got firearms and newer computers. > Why not get a server with two AC power supplies, and serve them off > different UPSes? I've got too many UPSs on racks as it is now. If I centralized things with big redundant UPSs, I'd have to run twice as much wiring in the datacenter and have twice as many computer power supplies to manage. > > Frank > > -----Original Message----- > From: [email protected] [mailto:[email protected]] On > Behalf Of jp > Sent: Friday, September 05, 2008 5:01 PM > To: [email protected] > Subject: dc servers > > I've been thinking of better ways to provide uninteruptable power, and > 48vdc is proven nice but too expensive for commodity computing > equipment and the wiring is more expensive than normal utility wiring > due to the lower voltages. > > I've read that most autoranging switching power supplies as used in > computers can run off DC. > > I'm thinking I could run three-phase AC into a diode network to get > full-wave-bridge-rectifier really smooth output with really well > phase balanced input. This would give me 120vdc. > > I could wire in series a string of AGM UPS batteries that would float at > 120vdc, then I could distribute power to the servers from there. The > capacity would only be limited by the basics such as the diode current > capacity, battery output current, breakers, and wiring used. > > Punch some holes in my crazy plan if you are qualified. Has anyone used > such a system? This could handle a lot more load for less money than > most big line-interactive UPSs and would have no cut-over delays like > the 48v gear. > > -- > /* Jason Philbrook | Midcoast Internet Solutions - Wireless and DSL > KB1IOJ | Broadband Internet Access, Dialup, and Hosting > http://f64.nu/ | for Midcoast Maine http://www.midcoast.com/ > */ > -- > Eat sushi frequently. - Avi > [email protected] is the human contact address. > [email protected] is the list posting address. > See below URL for subscribe/unsubscribe and list options: > http://inet-access.net/mailman/listinfo/list > > -- > Eat sushi frequently. - Avi > [email protected] is the human contact address. > [email protected] is the list posting address. > See below URL for subscribe/unsubscribe and list options: > http://inet-access.net/mailman/listinfo/list -- /* Jason Philbrook | Midcoast Internet Solutions - Wireless and DSL KB1IOJ | Broadband Internet Access, Dialup, and Hosting http://f64.nu/ | for Midcoast Maine http://www.midcoast.com/ */ -- Eat sushi frequently. - Avi [email protected] is the human contact address. [email protected] is the list posting address. See below URL for subscribe/unsubscribe and list options: http://inet-access.net/mailman/listinfo/list