Comments on: The Google power perspective http://storagemojo.com/2007/09/05/the-google-power-perspective/ Data storage info & analysis Mon, 08 Sep 2008 15:40:59 +0000 http://wordpress.org/?v=2.6.1 By: Richard http://storagemojo.com/2007/09/05/the-google-power-perspective/#comment-115160 Richard Sun, 09 Sep 2007 12:37:06 +0000 http://storagemojo.com/2007/09/05/the-google-power-perspective/#comment-115160 Google is 'locked-in' to triplicated storage, with six disks per motherboard-based storage node. They need all the help they can get... but all of this stuff is marginal. Nothing like this can make them 'green', regardless what they say. Google is ‘locked-in’ to triplicated storage, with six disks per motherboard-based storage node. They need all the help they can get… but all of this stuff is marginal. Nothing like this can make them ‘green’, regardless what they say.

]]> By: Alex http://storagemojo.com/2007/09/05/the-google-power-perspective/#comment-114195 Alex Fri, 07 Sep 2007 13:21:02 +0000 http://storagemojo.com/2007/09/05/the-google-power-perspective/#comment-114195 I'd love to know what you think of Cassatt (http://www.cassatt.com/). They tackle the same problem with a slightly different solution. I’d love to know what you think of Cassatt (http://www.cassatt.com/). They tackle the same problem with a slightly different solution.

]]> By: Anonymous http://storagemojo.com/2007/09/05/the-google-power-perspective/#comment-114095 Anonymous Fri, 07 Sep 2007 08:27:44 +0000 http://storagemojo.com/2007/09/05/the-google-power-perspective/#comment-114095 It may become cost-effective to be greener if the cost of power goes up. As it stands I guess it is only worth thinking about saving energy if you have to (because you have some limit on the maximum energy you can draw), if the savings outweigh the costs (long term savings before equipment is replaced outweighs costs of buying the powersaving equipment over the non powersaving stuff) or possibly if you are new (you don't already have the infrastructure which will go idle but will still be paid for). I have only ever measured consumer kit usage using wall wart devices but one Intel Core 2 Duo machine I looked at would draw 81W at peak, 40W at Idle and 4W when doing suspend to RAM. Looking at an Intel Core Duo 2 laptop I've seen it draw up to around 40W peak and 18W idle on AC (although the system alleges that the only 8W is being drawn when its on battery and doing maximum powersaving and is idle). Obviously these numbers don't mean anything, but I do wonder how a system can get down to the 10% mark you are mentioning without effectively being turned "off"... It may become cost-effective to be greener if the cost of power goes up. As it stands I guess it is only worth thinking about saving energy if you have to (because you have some limit on the maximum energy you can draw), if the savings outweigh the costs (long term savings before equipment is replaced outweighs costs of buying the powersaving equipment over the non powersaving stuff) or possibly if you are new (you don’t already have the infrastructure which will go idle but will still be paid for).

I have only ever measured consumer kit usage using wall wart devices but one Intel Core 2 Duo machine I looked at would draw 81W at peak, 40W at Idle and 4W when doing suspend to RAM. Looking at an Intel Core Duo 2 laptop I’ve seen it draw up to around 40W peak and 18W idle on AC (although the system alleges that the only 8W is being drawn when its on battery and doing maximum powersaving and is idle). Obviously these numbers don’t mean anything, but I do wonder how a system can get down to the 10% mark you are mentioning without effectively being turned “off”…

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