High density web scale compute requires a totally different approach to cooling, or more appropriately, the shortage of cooling and...
High
density web scale compute requires a totally different approach to cooling, or
more appropriately, the shortage of cooling and using outside air. Similarly,
it requires a special approach on how power is being managed and deployed
within the rack. this text focuses on power distribution within a rack. There
are several approaches to the present and one such process is explained below.
Recommended
process to be followed:
1.
AC-3 Phase is mandatory to travel into high density. it's efficient and
scalable. It presents challenges like balancing loads across A-B-C phases of a
3-phase circuit.
2.
High Density Outlets (HDOs) are a requirement . Standard outlets can't be used
because it results in a drag of form factors like cable management, operational
issues or the quality outlets that simply find yourself using an upscale width
on the rack space.
3.
Alternating Phases within the outlets solve the issues of balancing the
A-B-C-phases on a 3-phase circuit. it's better to unravel the balancing of the
phases within the rack, instead of at the upstream facility, RPP, Floor PDU or
maybe at the ground level.
4.
Measuring your load configuration at several intervals is vital . There are
several ways to unravel this problem: Software, Hardware, Input Metering etc.
Software is more prevalent now. Using IPMI interfaces to capture such
information is best , more agile and granular.
5.
Network Closets are populating with denser port counts.
6.
Network Closets require lesser outlets, but more power. 10G, 40G, 100G and even
400G links, which are increasing fairly quickly means, you would like to supply
more power per port. Power must even be truly redundant. A failure during a
Network Closet is far costlier than a failure at a Server/Compute level.
7.
High Density tap boxes can reduce the amount of tap boxes by making the busway
neater and by supplying you with the power to feature tons of circuits into one
rack. Keeping these high level points in mind, here are a number of the unique
solutions.
1.
35.2KW 0U High Density 108 Outlet Rack PDU Configuration for Cabinet
2.
8.8KW 2U High Density 24 Outlet Rack PDU Configuration for Network Closet
3.
8.8KW 1U High Density 12 Outlet Rack PDU Configuration for Network Closet
There
are basic challenges with lead times, in-time inventory and therefore the
ability to source these globally in various configurations for deployments. the
simplest solution to beat might be to stock the units in large volumes of a
minimum of 400+ unit quantities.
Mr.
Paul Weber,
VP
Engineering at Rahi Systems
Paul
Weber spent 20 years working within the dynamic world of knowledge centers and
is hooked in to creating the customer-centric IT solutions that resonate with
the clientele. He is VP, Engineering at Rahi Systems, a knowledge center
solutions company within the Silicon Valley and involved within the design,
production, review and support of Rahi Systems IT products.
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