AW: Dual rackmountable power supply?
APC makes one, but it is a 1U device... IT does give you SNMP monitoring of the status of both circuits though, which is a rather cool feature. I have a similar situation at one of our POPs which is why I ended up needing the product. Thanks, John van Oppen PocketiNet Communications -Ursprüngliche Nachricht- Von: Mike Sawicki [mailto:[EMAIL PROTECTED] Gesendet: Friday, April 22, 2005 3:34 PM An: nanog@merit.edu Betreff: Dual rackmountable power supply? Do any of you know if there are companies who manufacture 1/2U rackmountable PDU's that take AC from redundant sources? I have equipment at a colo that seems to have issues with one of the two circuits in my cabinets about once a month. Since it would be a real pain in the neck for me to retrofit every server with dual-ps, I was thinking this could be a possible middle-of-the-road solution. Thanks. -- Mike Sawicki ([EMAIL PROTECTED])
Re: Dual rackmountable power supply?
Without 1-1 transformer and complex switching circuitry you really can't do safe switching from one to the other. That pretty much means any such device would be just as complex or more so as UPS, but less safe. So I think your best bet is to decide if your power problems last long and if they dont last more then several minutes and then just use regular UPS or if its bigger problem, then use UPS that can accept redundant power sources. For servers with redundant power supply its quite different because they do provide power to the board from multiple sources and each one is already DC so its not a problem to switch quickly then. On Fri, 22 Apr 2005, Mike Sawicki wrote: Do any of you know if there are companies who manufacture 1/2U rackmountable PDU's that take AC from redundant sources? I have equipment at a colo that seems to have issues with one of the two circuits in my cabinets about once a month. Since it would be a real pain in the neck for me to retrofit every server with dual-ps, I was thinking this could be a possible middle-of-the-road solution. Thanks. -- Mike Sawicki ([EMAIL PROTECTED])
Re: Dual rackmountable power supply?
On 23.04.2005 00:33 Mike Sawicki wrote Do any of you know if there are companies who manufacture 1/2U rackmountable PDU's that take AC from redundant sources? I have equipment at a colo that seems to have issues with one of the two circuits in my cabinets about once a month. Since it would be a real pain in the neck for me to retrofit every server with dual-ps, I was thinking this could be a possible middle-of-the-road solution. Thanks. Have a look at APC (http://www.apcc.com/products/family/index.cfm?id=14&ISOCountryCode=us) Arnold -- Arnold Nipper, AN45
Re: Dual rackmountable power supply?
On Fri, 22 Apr 2005, Mike Sawicki wrote: > Do any of you know if there are companies who manufacture 1/2U > rackmountable PDU's that take AC from redundant sources? I have > equipment at a colo that seems to have issues with one of the two > circuits in my cabinets about once a month. Since it would be a real > pain in the neck for me to retrofit every server with dual-ps, I was > thinking this could be a possible middle-of-the-road solution. Thanks. This is called a "Static Transfer Switch". (Sometimes "automatic transfer switch", particularly for smaller units). Number of companies make small ones: http://www.baytechdcd.com/cgi-private/showprod?prod=F5-RPC http://www.baytechdcd.com/cgi-private/showprod?prod=ATS12-30 http://twinsource.net/ http://www.apc.com/products/family/index.cfm?id=14 http://www.mgeups.com/products/pdt230/sts/psts/stsa.htm
Dual rackmountable power supply?
Do any of you know if there are companies who manufacture 1/2U rackmountable PDU's that take AC from redundant sources? I have equipment at a colo that seems to have issues with one of the two circuits in my cabinets about once a month. Since it would be a real pain in the neck for me to retrofit every server with dual-ps, I was thinking this could be a possible middle-of-the-road solution. Thanks. -- Mike Sawicki ([EMAIL PROTECTED])
RE: Dual rackmountable power supply?
> -Original Message- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of > [EMAIL PROTECTED] > Sent: Friday, April 22, 2005 8:07 PM > To: Mike Sawicki > Cc: nanog@merit.edu > Subject: Re: Dual rackmountable power supply? > > > > On Fri, 22 Apr 2005, Mike Sawicki wrote: > > > Do any of you know if there are companies who manufacture 1/2U > > rackmountable PDU's that take AC from redundant sources? I have > > equipment at a colo that seems to have issues with one of the two > > circuits in my cabinets about once a month. Since it would > be a real > > pain in the neck for me to retrofit every server with dual-ps, I was > > thinking this could be a possible middle-of-the-road > solution. Thanks. > This is called a "Static Transfer Switch". (Sometimes > "automatic transfer > switch", particularly for smaller units). Number of companies > make small > ones: > > http://www.baytechdcd.com/cgi-private/showprod?prod=F5-RPC > http://www.baytechdcd.com/cgi-private/showprod?prod=ATS12-30 > http://twinsource.net/ > http://www.apc.com/products/family/index.cfm?id=14 > http://www.mgeups.com/products/pdt230/sts/psts/stsa.htm I don't think you can place these on the pointy side of conditioned power. They require utility, IIRC, which means you also need to add in some UPS for the front side to make it work right since utility will tend to take 'switch hits' during peak as the utility moves load around. WRT to the flapping power circuit, blind guess, ask your colo provider to measure the load at your breaker and if it's fine then swap the strip and chords (twistlock or not) back to the first JB. -M< -- Martin Hannigan (c) 617-388-2663 VeriSign, Inc. (w) 703-948-7018 Network Engineer IV Operations & Infrastructure [EMAIL PROTECTED]
