Data Centers - PowerPoint PPT Presentation

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Data Centers

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Raised floor. Hot Site availability in case of disaster. Must have all necessary electric, HVAC, flooring, Data communications. Access ... – PowerPoint PPT presentation

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Title: Data Centers


1
Chapter 17
  • Data Centers

2
Data Center
  • Contains machines that are shared resources
  • Put all your eggs in a good / secure basket
  • Get in right the first time

3
The Essentials
  • Environment HVAC
  • Location
  • Racks
  • Disaster Planning
  • Wiring
  • Access
  • Moving equipment into/out of the DC
  • Working on equipment
  • Providing Customers access
  • Security
  • No Keys

4
Location
  • Where in the building
  • Consider natural disaster possibilities
  • In area prone to flooding dont locate in
    basement
  • Strength of floor
  • Access to electrical / telecom service
  • Location of UPS / ATS / generators
  • Raised floor
  • Hot Site availability in case of disaster
  • Must have all necessary electric, HVAC, flooring,
    Data communications

5
Access
  • A least two entry / exit points
  • Doors wide enough to move equipment thru
  • Ramps may be required if raised flooring is used
  • Access to an elevator if on upper floors
  • Access from the delivery dock

6
Security
  • Avoid keys
  • Easily duplicated
  • No logging of who has entered
  • Difficult to use if arms full of equipmrnt
  • Badges
  • Bio-Metric
  • For high security installations use two levels
    security
  • Voice recognition
  • Unique security password
  • All business/network critical equipment should
    live in a secure Data Center

7
Electrical Power
  • Condition circuits
  • Little power flucuations
  • UPS
  • On Line
  • Power is conditioned by the unit
  • Equipment draws power from UPS all the time
  • Off Line
  • Equipment draws power from the UPS only when
    external source of electricity has been lost
  • UPS have short power cycle
  • Back up with Generators
  • Automatic Transfer Switch ATS
  • Compute the Electrical Load
  • All Components, HVAC, UPS charging then add
    some

8
Electrical Power
  • Overhead power distribution
  • Racks with Power Distribution Units (PDU)
  • Keep it all within the rack
  • Multiple power sources (circuits)
  • One goes the data center is not dead

9
ATS
  • The Automatic Transfer Switch (ATS)
  • emergency power system designed to provide an
    alternate source (or sources) of power
  • if the primary source fails.
  • Key element in the system
  • enable an orderly transition from the primary
    source to the alternate source of power

10
Environment
  • HVAC
  • Equipment generates a lot of heat
  • Necessary to control
  • Temperature cooling
  • Humidity
  • Need to be on power protected circuits
    UPS/Generators
  • Monitoring the environment
  • Hot spots
  • Water etc.

11
Fire Suppression
  • Water will kill your data center
  • Considerations
  • People / environmental safety
  • Can equipment continue to operate if triggered
  • Alert mechanism
  • Train staff what to do in case of a fire
  • Procedure to be sure fire does not reactivate

12
Racks
  • No racks are a disaster
  • Rack choice influences
  • Floor space needed
  • Ease of maintenance
  • Air circulation to equipment
  • Ease of mounting equipment
  • Stability / protection of equipment
  • Cable Management
  • Open or closed systems
  • Vertical and Horizontal Management
  • Rails, drawers, etc

13
2-Post vs 4-Post Racks
14
Network Wiring
  • Prewired racks
  • Cable identification
  • Color coded
  • By subnets
  • Serial number
  • Labels
  • Have varying length on hand
  • Machine cables should be long enough that it can
    be easily maintatined
  • Use latest technology that is affordable
  • Keep it simple and flexible
  • Punch down blocks or patch panels

15
Patch Panel
16
Punch Down
17
Finally
  • Label everything
  • Provide for SA communications inside and outside
    the data center
  • Console Servers / KVM switches
  • Reduce needed equipment to monitor servers
  • Some servers allow telnet or web access for
    administration
  • Secure authorization must be in place for remote
    administration
  • Redundancy, redundancy, redundancy
  • All costs big dollars
  • Depends on the critical nature of the center

18
Work Space
  • Carts with tools and common hardware
  • Separate room for work space
  • Provide parking spaces in DC for workbench carts

19
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