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Chapter 17 Data Centers.ppt


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Chapter 17 Data Centers.ppt

  1. 1. Chapter 17 Data Centers
  2. 2. Data Center <ul><li>Contains machines that are shared resources </li></ul><ul><li>Put all your eggs in a good / secure basket </li></ul><ul><li>Get in right the first time </li></ul>
  3. 3. The Essentials <ul><li>Environment – HVAC </li></ul><ul><li>Location </li></ul><ul><li>Racks </li></ul><ul><li>Disaster Planning </li></ul><ul><li>Wiring </li></ul><ul><li>Access </li></ul><ul><ul><li>Moving equipment into/out of the DC </li></ul></ul><ul><ul><li>Working on equipment </li></ul></ul><ul><ul><li>Providing Customers access </li></ul></ul><ul><li>Security </li></ul><ul><ul><li>No Keys </li></ul></ul>
  4. 4. Location <ul><li>Where in the building </li></ul><ul><li>Consider natural disaster possibilities </li></ul><ul><ul><li>In area prone to flooding don’t locate in basement </li></ul></ul><ul><li>Strength of floor </li></ul><ul><li>Access to electrical / telecom service </li></ul><ul><li>Location of UPS / ATS / generators </li></ul><ul><li>Raised floor </li></ul><ul><li>Hot Site availability in case of disaster </li></ul><ul><ul><li>Must have all necessary electric, HVAC, flooring, Data communications </li></ul></ul>
  5. 5. Access <ul><li>A least two entry / exit points </li></ul><ul><li>Doors wide enough to move equipment thru </li></ul><ul><li>Ramps may be required if raised flooring is used </li></ul><ul><li>Access to an elevator if on upper floors </li></ul><ul><ul><li>Access from the delivery dock </li></ul></ul>
  6. 6. Security <ul><li>Avoid keys </li></ul><ul><ul><li>Easily duplicated </li></ul></ul><ul><ul><li>No logging of who has entered </li></ul></ul><ul><ul><li>Difficult to use if arms full of equipmrnt </li></ul></ul><ul><li>Badges </li></ul><ul><li>Bio-Metric </li></ul><ul><li>For high security installations – use two levels security </li></ul><ul><ul><li>Voice recognition </li></ul></ul><ul><ul><li>Unique security password </li></ul></ul><ul><li>All business/network critical equipment should live in a secure Data Center </li></ul>
  7. 7. Electrical Power <ul><li>Condition circuits </li></ul><ul><ul><li>Little power flucuations </li></ul></ul><ul><li>UPS </li></ul><ul><ul><li>On Line </li></ul></ul><ul><ul><ul><li>Power is conditioned by the unit </li></ul></ul></ul><ul><ul><ul><li>Equipment draws power from UPS all the time </li></ul></ul></ul><ul><ul><li>Off Line </li></ul></ul><ul><ul><ul><li>Equipment draws power from the UPS only when external source of electricity has been lost </li></ul></ul></ul><ul><li>UPS have short power cycle </li></ul><ul><ul><li>Back up with Generators </li></ul></ul><ul><li>Automatic Transfer Switch – ATS </li></ul><ul><li>Compute the Electrical Load </li></ul><ul><ul><li>All Components, HVAC, UPS charging – then add some </li></ul></ul>
  8. 8. Electrical Power <ul><li>Overhead power distribution </li></ul><ul><li>Racks with Power Distribution Units (PDU) </li></ul><ul><ul><li>Keep it all within the rack </li></ul></ul><ul><li>Multiple power sources (circuits) </li></ul><ul><ul><li>One goes the data center is not dead </li></ul></ul>
  9. 9. ATS <ul><li>The Automatic Transfer Switch (ATS) </li></ul><ul><ul><li>emergency power system designed to provide an alternate source (or sources) of power </li></ul></ul><ul><ul><li>if the primary source fails. </li></ul></ul><ul><li>Key element in the system </li></ul><ul><ul><li>enable an orderly transition from the primary source to the alternate source of power </li></ul></ul>
  10. 10. Environment <ul><li>HVAC </li></ul><ul><li>Equipment generates a lot of heat </li></ul><ul><li>Necessary to control </li></ul><ul><ul><li>Temperature – cooling </li></ul></ul><ul><ul><li>Humidity </li></ul></ul><ul><li>Need to be on power protected circuits – UPS/Generators </li></ul><ul><li>Monitoring the environment </li></ul><ul><ul><li>Hot spots </li></ul></ul><ul><ul><li>Water etc. </li></ul></ul>
  11. 11. Fire Suppression <ul><li>Water will kill your data center </li></ul><ul><li>Considerations </li></ul><ul><ul><li>People / environmental safety </li></ul></ul><ul><ul><li>Can equipment continue to operate if triggered </li></ul></ul><ul><ul><li>Alert mechanism </li></ul></ul><ul><li>Train staff what to do in case of a fire </li></ul><ul><li>Procedure to be sure fire does not reactivate </li></ul>
  12. 12. Racks <ul><li>No racks are a disaster </li></ul><ul><li>Rack choice influences </li></ul><ul><ul><li>Floor space needed </li></ul></ul><ul><ul><li>Ease of maintenance </li></ul></ul><ul><ul><li>Air circulation to equipment </li></ul></ul><ul><ul><li>Ease of mounting equipment </li></ul></ul><ul><ul><li>Stability / protection of equipment </li></ul></ul><ul><ul><li>Cable Management </li></ul></ul><ul><ul><ul><li>Open or closed systems </li></ul></ul></ul><ul><ul><ul><li>Vertical and Horizontal Management </li></ul></ul></ul><ul><ul><li>Rails, drawers, etc </li></ul></ul>
  13. 13. 2-Post vs 4-Post Racks
  14. 14. Network Wiring <ul><li>Prewired racks </li></ul><ul><li>Cable identification </li></ul><ul><ul><li>Color coded </li></ul></ul><ul><ul><ul><li>By subnets </li></ul></ul></ul><ul><ul><li>Serial number </li></ul></ul><ul><ul><li>Labels </li></ul></ul><ul><li>Have varying length on hand </li></ul><ul><ul><li>Machine cables should be long enough that it can be easily maintatined </li></ul></ul><ul><li>Use latest technology – that is affordable </li></ul><ul><li>Keep it simple and flexible </li></ul><ul><li>Punch down blocks or patch panels </li></ul>
  15. 15. Patch Panel
  16. 16. Punch Down
  17. 17. Finally <ul><li>Label everything </li></ul><ul><li>Provide for SA communications inside and outside the data center </li></ul><ul><li>Console Servers / KVM switches </li></ul><ul><ul><li>Reduce needed equipment to monitor servers </li></ul></ul><ul><ul><li>Some servers allow telnet or web access for administration </li></ul></ul><ul><ul><li>Secure authorization must be in place for remote administration </li></ul></ul><ul><li>Redundancy, redundancy, redundancy </li></ul><ul><ul><li>All costs big dollars </li></ul></ul><ul><ul><li>Depends on the critical nature of the center </li></ul></ul>
  18. 18. Work Space <ul><li>Carts with tools and common hardware </li></ul><ul><li>Separate room for work space </li></ul><ul><li>Provide parking spaces in DC for workbench carts </li></ul>