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  1. #1
    WHT-BR Top Member
    Data de Ingresso
    Dec 2010

    [EN] Microsoft 2010

    Dezembro de 2010

    Dileep Bhandarkar : Na época, "Distinguished Engineer at Microsoft, responsible for Cloud Server Hardware and Datacenter Infrastructure". Ex- Texas Instruments, Digital (17 anos), Intel (12), Microsoft (5). Atualmente Vice President, Technology at Qualcomm.

    James Hamilton :
    Vice President and Distinguished Engineer on the Amazon Web Services team where he is focused on infrastructure efficiency, reliability, and scaling (2008-) Ex-IBM (10 anos) e ex-Microsoft (12) - Hamilton's research on the use of data center containers has been adopted in Microsoft’s design of its cloud computing data centers.

    Dileep’s talk:
    Watt Matters in Energy Efficiency

    James Hamilton's notes:

    -Microsoft Datacenter Capacities:
    Quincy WA: 550k sq ft, 27MW

    o San Antonio Tx: 477k sq ft, 27MW
    o Chicago, Il: 707k sq ft, 60MW § Containers on bottom floor with “medium reliability” (no generators) and standard rooms on top floor with full power redundancy
    o Dublin, Ireland: 570k sq ft, 27MW

    Speeds and feeds from Microsoft Consumer Cloud Services:

    o Windows Live: 500M IDs
    o Live Hotmail: 355M Active Accounts
    o Live Messenger: 303M users
    o Bing: 4B Queries/month
    o Xbox Live: 25M users
    o adCenter: 14B Ads served/month
    o Exchange Hosted Services: 2 to 4B emails/day

    Datacenter Construction Costs

    o Land: <2%
    o Shell: 5 to 9%
    o Architectural: 4 to 7%
    o Mechanical & Electrical: 70 to 85%

    Summarizing the above list, we get 80% of the costs scaling with power consumption and 10 to 20% scaling with floor space.

    Reports that datacenter build costs are $10M to $20M per MW and server TCO is the biggest single category. I would use the low end of this spectrum for a cost estimator with inexpensive facilities in the $9M to $10M/MW range.

    PUE is a good metric for evaluating datacenter infrastructure efficiency but Microsoft uses best server performance per watt per TCO$

    o Optimize the server design and datacenter together
    · Cost-Reduction Strategies:
    o Server cost reduction:
    § Right size server: Low Power Processors often offer best performance/watt
    § Eliminate unnecessary components (very small gain)
    § Use higher efficiency parts
    § Optimize for server performance/watt/$ (cheap and low power tend to win at scale)
    o Infrastructure cost reduction:
    § Operate at higher temperatures
    § Use free air cooling & Eliminate chillers
    § Use advanced power management with power capping to support power over-subscription with peak protection

    Custom Server Design:

    o 2 socket, half-width server design (6.3”W x 16.7”L)
    o 4x SATA HDD connectors
    o 4x DIMM slots per CPU socket
    o 2x 1GigE NIC
    o 1x 16x PCIe slot


  2. #2
    WHT-BR Top Member
    Data de Ingresso
    Dec 2010

    Custom Rack Design:

    o 480 VAC 3p power directly to the rack (higher voltage over a given conductor size reduces losses in distribution)
    o Very tall 56 RU rack (over 98” overall height)
    o 12VDC distribution within the rack from two combined power supplies with distributed UPS
    o Power Supplies (PSU)
    § Input is 480VAC 3p
    § Output: 12V DC
    § Servers are 12VDC only boards
    § Each PSU is 4.5KW
    § 2 PSUs/rack so rack is 9.0KW max
    o Distributed UPS
    § Each PSU includes an UPS made up of 4 groups of 40 13.2V batteries
    § Overall 160 discrete batteries per UPS
    o By putting 2 PSUs per rack they avoid transporting low voltage (12VDC) further than 1/3 of a rack distance (under 1 yard) and only 4.5 KW is transported so moderately sized bus bars can be used.
    o Rack Networking:
    § Rack networking is interesting with 2 to 4 tor switches per rack. We know the servers are 1 GigE connected and there are up to 96 per rack which yields two possibilities: 1) they are using 24 port GigE switches or 2) they are using 48 port GigE and fat tree network topology. 24 port TORs are not particularly cost effective, so I would assume 48x1GigE TORs in a fat tree design which is nice work.
    o Report that the CPUs can be lower power parts including Intel Atom, AMD Bobcat, and ARM

    Power proportionality: Shows that server at 0% load consumes 32% of peak power (this is an amazingly good server – 45% to 60% is much closer to the norm)
    Última edição por 5ms; 02-12-2014 às 00:13.

  3. #3
    WHT-BR Top Member
    Data de Ingresso
    Dec 2010

    Cloud Optimized High Density Servers

    No redundancy features in hardware (e.g. RAID)

    Servers built using commodity components (SATA HDD, MLC SSD)

    Applications specifically designed to provide Resiliency and Fault Tolerance

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