Copper cabling can resolve the cost / power equation
http://datacenterjournal.com/content/view/1807/41/ [2008-7-14]
Tag : Fiber Optic Transceiver
Intra-rack system interconnect at today’s 10Gbps data rateshas a significant role to play in reducing power consumption in thedata center and the reduction in CO2 emissions this brings shouldnot be overlooked by the environment conscious. The need to keepback-up power and cooling in step with rapidly expanding equipmentrack requirements makes overall power management a big issue.
At the same time however, careful management of power often needsto take place in the face of shrinking capital expenditure, whichneeds to be controlled and managed with equal levels of tenacity. While there are many more physical and technical factors toconsider, the power and cost considerations of data centerinterconnect need to be balanced.
This article therefore recaps on the main advantages anddisadvantages of each of the principal incumbent interconnectoptions: 10GBASE-SR, CX4 and 10GBASE-T and proposes that emergingactive twin-ax interconnect solutions present a radical alternativewhich can simultaneously tackle both power and capex issues.
10GBASE-SR
When it comes to its reach, physical weight and power consumption,multimode optical fibre interconnect has for more than twenty yearscreated links that tick all the right boxes for high speed datacomms; a glance at the simple technology comparison table shown inTable 1 confirms this.
Since 80% of all cables in the data center are less than 30m inlength, clearly optical fiber’s got the range aspect morethan covered and weight-wise of course, it is the least likely ofthe available options to pose a weight-bearing problem for cableducts - be they underground or overhead.
On power consumption too optical fibre interconnects perform well. Operating at as little as 1.5W, an XFP fibre optic cable modulefigures well and with newer SFP+ solutions taking power consumptiondown to 1W or maybe even less - things can only get better. Plusit really is as easy to terminate in the field as copper cable andlet’s face it bend radius really isn’t an issue in aprofessional environment.
Intra-rack system interconnect at today’s 10Gbps data rateshas a significant role to play in reducing power consumption in thedata center and the reduction in CO2 emissions this brings shouldnot be overlooked by the environment conscious. The need to keepback-up power and cooling in step with rapidly expanding equipmentrack requirements makes overall power management a big issue.
At the same time however, careful management of power often needsto take place in the face of shrinking capital expenditure, whichneeds to be controlled and managed with equal levels of tenacity. While there are many more physical and technical factors toconsider, the power and cost considerations of data centerinterconnect need to be balanced.
This article therefore recaps on the main advantages anddisadvantages of each of the principal incumbent interconnectoptions: 10GBASE-SR, CX4 and 10GBASE-T and proposes that emergingactive twin-ax interconnect solutions present a radical alternativewhich can simultaneously tackle both power and capex issues.
10GBASE-SR
When it comes to its reach, physical weight and power consumption,multimode optical fibre interconnect has for more than twenty yearscreated links that tick all the right boxes for high speed datacomms; a glance at the simple technology comparison table shown inTable 1 confirms this.
Since 80% of all cables in the data center are less than 30m inlength, clearly optical fiber’s got the range aspect morethan covered and weight-wise of course, it is the least likely ofthe available options to pose a weight-bearing problem for cableducts - be they underground or overhead.
On power consumption too optical fibre interconnects perform well. Operating at as little as 1.5W, an XFP fibre optic cable modulefigures well and with newer SFP+ solutions taking power consumptiondown to 1W or maybe even less - things can only get better. Plusit really is as easy to terminate in the field as copper cable andlet’s face it bend radius really isn’t an issue in aprofessional environment.
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