1
© OCTO 2012© OCTO 2012
Planning Data Centers
Art of Scalability – Chapter 32
by Martin L. Abbott & Michael T. Fischer
Ni...
2
© OCTO 2012
Tél : +33 (0)1 58 56 10 00
Fax : +33 (0)1 58 56 10 01
www.octo.com© OCTO 2012
50, avenue des Champs-Elysées
...
3
© OCTO 2012
Building Data Centers
The « Three Magical Rules of Three »
Data Replication
Run multiple live sites
Outline
...
4
© OCTO 2012
Workforce Power cost Network connections Ease of access
Geographical risks Air T° and humidity Available spa...
5
© OCTO 2012
Tél : +33 (0)1 58 56 10 00
Fax : +33 (0)1 58 56 10 01
www.octo.com© OCTO 2012
50, avenue des Champs-Elysées
...
6
© OCTO 2012
1st rule: The Three Cost Drivers
Materials
HVAC
Power
7
© OCTO 2012
Availability
Sizing
2nd Rule: Triple everything
Every server, service, equipment should be tripled (at least...
8
© OCTO 2012
3rd Rule: Go with 3 Data Centers
To handle a site down with a good cost tradeoff
Site Configuration Network ...
9
© OCTO 2012
Data Replication Key
Idea!
10
© OCTO 2012
Stateless systems
URI stateful
Client side stateful
Session afinity
Segmenting customers along Z-axis
How t...
11
© OCTO 2012
Higher availability compared to a hot / cold site configuration
Lower costs
Higher confidence
CDN feature
F...
12
© OCTO 2012
More complexity to handle
More headcounts to manage operations
More network related costs
… and some inconv...
13
© OCTO 2012
Tél : +33 (0)1 58 56 10 00
Fax : +33 (0)1 58 56 10 01
www.octo.com© OCTO 2012
50, avenue des Champs-Elysées...
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Planning data centers

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Some support slides to talk about Planning Data Center, the Chapter 32 in the marvelous book Art of Scalability by Martin L. Abbott and Michael T. Fischer.

This mainly focus on being redundant, sizing and benefit on going with 3 (at least) live data centers.

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  • Months to Years: sooner is better to prepare it and avoid needing it when you are already at risks.
  • More data centers you have more you are able to distribute load, less you need servers in each data center.
    Still you have to be able to handle a data center to go down without losing data so you need to replicate your data.
  • Planning data centers

    1. 1. 1 © OCTO 2012© OCTO 2012 Planning Data Centers Art of Scalability – Chapter 32 by Martin L. Abbott & Michael T. Fischer Nicolas Landier
    2. 2. 2 © OCTO 2012 Tél : +33 (0)1 58 56 10 00 Fax : +33 (0)1 58 56 10 01 www.octo.com© OCTO 2012 50, avenue des Champs-Elysées 75008 Paris - FRANCE « Going to Rio de Janeiro is an expensive and complex trip to manage. You have to think about it because it will take time to achieve. » several Data Centers Pope Francisco Copacabana, July 2013
    3. 3. 3 © OCTO 2012 Building Data Centers The « Three Magical Rules of Three » Data Replication Run multiple live sites Outline Key Idea! Key Idea!
    4. 4. 4 © OCTO 2012 Workforce Power cost Network connections Ease of access Geographical risks Air T° and humidity Available space What was a good location? Cheap lands What is a good location now? Cheap power! Building Data Centers number of servers
    5. 5. 5 © OCTO 2012 Tél : +33 (0)1 58 56 10 00 Fax : +33 (0)1 58 56 10 01 www.octo.com© OCTO 2012 50, avenue des Champs-Elysées 75008 Paris - FRANCE The Three Magical Rules of Three
    6. 6. 6 © OCTO 2012 1st rule: The Three Cost Drivers Materials HVAC Power
    7. 7. 7 © OCTO 2012 Availability Sizing 2nd Rule: Triple everything Every server, service, equipment should be tripled (at least) to secure and maintain the quality of service Current needs Growth Fallback Key Idea!
    8. 8. 8 © OCTO 2012 3rd Rule: Go with 3 Data Centers To handle a site down with a good cost tradeoff Site Configuration Network Servers Databases Storage Network Site Connections Total Cost Single Site 100% 100% 100% 100% 0 100% 2 Site “Hot” and “Cold” 200% 200% 200% 200% 1 200% 2 Site Live/Live 200% 200% 200% 200% 1 200% 3 Site Live/Live/Live 150% 150% 150% 200% 3 166% > 3 Live sites < 150% < 150% < 150% 200% > 3 < 166% Key Idea!
    9. 9. 9 © OCTO 2012 Data Replication Key Idea!
    10. 10. 10 © OCTO 2012 Stateless systems URI stateful Client side stateful Session afinity Segmenting customers along Z-axis How to run multiple live sites? Chap 22 Chap 26
    11. 11. 11 © OCTO 2012 Higher availability compared to a hot / cold site configuration Lower costs Higher confidence CDN feature Flexibility To set up traffic / test / deployment / whatever policies you want Smooth/Rolling upgrade using traffic balancing Running multi live sites brings advantages
    12. 12. 12 © OCTO 2012 More complexity to handle More headcounts to manage operations More network related costs … and some inconvenients
    13. 13. 13 © OCTO 2012 Tél : +33 (0)1 58 56 10 00 Fax : +33 (0)1 58 56 10 01 www.octo.com© OCTO 2012 50, avenue des Champs-Elysées 75008 Paris - FRANCE Thank you!

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