Hi,
Running a bunch of CentOS servers on 2U supermicro equipment, usually with 8 drives on Adaptec SmartRAID V or LSI Megaraid.
In designing a rack in a data center, the question arises as to how to measure the amperage the server uses, prior to investing in power drops that actually do that for you, even remotely, for about $260.00-300USD per unit. This number is the important one these days in determining rack/datacenter design.
So the geek question is, "what do you use, from radio shack, or elsewhere, to accomplish this one time measurement *before* you implement a design"?
Even deeper, is there an open-source equivalent to some of the software-based solutions that purport to be able to give a reading on amp usage. Just curious if you have a similar server-type, (supermicro=very popular), what your measurements have been.
-karlski
Karl R. Balsmeier wrote:
Hi,
Running a bunch of CentOS servers on 2U supermicro equipment, usually with 8 drives on Adaptec SmartRAID V or LSI Megaraid.
In designing a rack in a data center, the question arises as to how to measure the amperage the server uses, prior to investing in power drops that actually do that for you, even remotely, for about $260.00-300USD per unit. This number is the important one these days in determining rack/datacenter design.
I use the Radio Shack Amp meter. It has an inductance jaw that you put over ONE wire to the device. This means you need a place on the circuit that separates the hot and neutral wires. I have a special rig: Mail plug - separate wires - Female receptacle. Of course I have to unplug the device, put this rig in, test, then put things back.
On Tue, 1 Aug 2006 at 6:55pm, Karl R. Balsmeier wrote
Running a bunch of CentOS servers on 2U supermicro equipment, usually with 8 drives on Adaptec SmartRAID V or LSI Megaraid.
In designing a rack in a data center, the question arises as to how to measure the amperage the server uses, prior to investing in power drops that actually do that for you, even remotely, for about $260.00-300USD per unit. This number is the important one these days in determining rack/datacenter design.
So the geek question is, "what do you use, from radio shack, or elsewhere, to accomplish this one time measurement *before* you implement a design"?
Kill-A-Watts a pretty darn popular on the beowulf list -- it seems like everyone has one. Thinkgeek has 'em for $30.
Running a bunch of CentOS servers on 2U supermicro equipment, usually with 8 drives on Adaptec SmartRAID V or LSI Megaraid.
In designing a rack in a data center, the question arises as to how to measure the amperage the server uses, prior to investing in power drops that actually do that for you, even remotely, for about $260.00-300USD per unit. This number is the important one these days in determining rack/datacenter design.
So the geek question is, "what do you use, from radio shack, or elsewhere, to accomplish this one time measurement *before* you implement a design"?
Easy. Get any modern UPS that will talk to your OS (or the OS on another nearby computer), plug in a server, and look at the UPS display. All the UPSs I have used lately will tell you what the load they are providing is, either is watts or in amps.
Ted Miller Elkhart, IN Centos NewNewbie
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Joshua Baker-LePain -
Karl R. Balsmeier -
Robert Moskowitz -
Ted Miller