Comments on: Great IT change came with a whisper not a bang http://ctovision.com/2009/10/great-it-change-came-with-a-whisper-not-a-bang/ News, analysis and context on enterprise technology for the CTO Thu, 09 Feb 2012 11:01:40 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Watch Takers Online http://ctovision.com/2009/10/great-it-change-came-with-a-whisper-not-a-bang/#comment-441 Watch Takers Online Tue, 24 Aug 2010 15:45:01 +0000 http://ctovision.com/?p=1291#comment-441 You prepared a number fine points there. I did a good solid research for this particular issue and found out generally people will definitely agree with your website. Thanks. You prepared a number fine points there. I did a good solid research for this particular issue and found out generally people will definitely agree with your website. Thanks.

]]> By: ENP_LNA_GBDT http://ctovision.com/2009/10/great-it-change-came-with-a-whisper-not-a-bang/#comment-440 ENP_LNA_GBDT Wed, 14 Oct 2009 00:43:30 +0000 http://ctovision.com/?p=1291#comment-440 CIOs may not be directly responsible for the energy bill, but they are the direct beneficiaries of any energy savings. As missions, applications and technology become more demanding, so does the requirement on the energy usage. If savings can be achieved at the data center level, the CIOs and their teams can provide additional functionality, capability and capacity in IT processes for less overall energy cost. A useful example is the vendor-neutral roadmap called Energy Logic that can walk IT and data center managers through the best practices that impact overall efficiency. A new measurement of data center effectiveness and efficiency can be located in the following white paper: <a href="http://www.liebert.com/common/ViewDocument.aspx?id=1226" rel="nofollow">http://www.liebert.com/common/ViewDocument.aspx?i...</a> CIOs may not be directly responsible for the energy bill, but they are the direct beneficiaries of any energy savings. As missions, applications and technology become more demanding, so does the requirement on the energy usage. If savings can be achieved at the data center level, the CIOs and their teams can provide additional functionality, capability and capacity in IT processes for less overall energy cost. A useful example is the vendor-neutral roadmap called Energy Logic that can walk IT and data center managers through the best practices that impact overall efficiency. A new measurement of data center effectiveness and efficiency can be located in the following white paper: http://www.liebert.com/common/ViewDocument.aspx?i…

]]> By: Bob Gourley http://ctovision.com/2009/10/great-it-change-came-with-a-whisper-not-a-bang/#comment-439 Bob Gourley Thu, 08 Oct 2009 23:26:34 +0000 http://ctovision.com/?p=1291#comment-439 Thanks Bill, that's great context. I've also heard that an all DC system saves HVAC since every conversion from AC to DC or back generates heat. Hopefully this new executive order causes many to rethink/redesign their data center approaches to put this sort of best practice in place. v/r, Bob Thanks Bill, that's great context. I've also heard that an all DC system saves HVAC since every conversion from AC to DC or back generates heat. Hopefully this new executive order causes many to rethink/redesign their data center approaches to put this sort of best practice in place.
v/r,
Bob

]]> By: Bill Jack http://ctovision.com/2009/10/great-it-change-came-with-a-whisper-not-a-bang/#comment-438 Bill Jack Thu, 08 Oct 2009 22:51:22 +0000 http://ctovision.com/?p=1291#comment-438 Bob, One great way to improve energy efficiency is to go to centralized DC power plant. My reviews have shown that over half of power purchased is wasted as heat going through various conversions. Additional power is subsequently required to operate the HVAC pumps, chillers etc to move this heat to the atmosphere. Large UPS systems loose a large percent of purchased power going through the conversion of AC to DC to AC. They are also frequently more unreliable at their output than the commercial power that is purchased. AC power supplies also waste more power and produce more heat. The silicon in the electronics requires DC so why not power directly from DC ? Telcos have powered this way for a century. Using DC requires large bus and cables and requires some good engineering planning of proximity of the power plant to the IT loads. Properly engineered DC plants are ultra reliable and can carry loads for hours instead of minutes with most large UPSs. Regards, BJ Bob,

One great way to improve energy efficiency is to go to centralized DC power plant. My reviews have shown that over half of power purchased is wasted as heat going through various conversions. Additional power is subsequently required to operate the HVAC pumps, chillers etc to move this heat to the atmosphere.

Large UPS systems loose a large percent of purchased power going through the conversion of AC to DC to AC. They are also frequently more unreliable at their output than the commercial power that is purchased.

AC power supplies also waste more power and produce more heat. The silicon in the electronics requires DC so why not power directly from DC ? Telcos have powered this way for a century.

Using DC requires large bus and cables and requires some good engineering planning of proximity of the power plant to the IT loads.

Properly engineered DC plants are ultra reliable and can carry loads for hours instead of minutes with most large UPSs.

Regards,

BJ

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