Data Center Handbook

  1. While air cooling is the most economical way to cool servers in racks, _______ cooling is the most efficient way to remove heat generated from processors.
    Water is the most efficient form of this in data centers.
  2. A data server’s utilization efficiency is estimated to be a disappointing _____?
    20%
  3. Based on “Power Usage Effectiveness.” March 2012 prepared by LBNL, _____% of total energy is used in power and cooling a data center and 66.6% by IT load. In a typical server, 30% of power is consumed by a processor and 70% by peripheral equipment that includes power supply, fans, drive, and so on. PP4 Data Center Handbook: 2015, Hwaiyu Geng. Wiley & Sons Inc
    33.4% or approximately one third of the power use in a data center is this.
  4. ________ is a method of running multiple independent virtual operating systems on a single physical computer. It is a way of allowing the same amount of processing to occur on fewer servers easing server utilization. instead of operating many servers at low CPU utilization, _________ combines the processing power onto fewer servers that operate at higher utilization. Both blanks are the same answer.  PP5 Data Center Handbook: 2015, Hwaiyu Geng. Wiley & Sons Inc
    Virtualization does this in a data center.
  5. Cloud computing provides various service models including ______,________,&_______. It benefits Data center managers by offering resource pooling and optimizing resource uses with lower costs.
    Software as a Service (SaaS), Infrastructure as a Service (IaaS), and Platform as a Service (PaaS) is part of this. PP5
  6. What is an architectural approach that has all ICT (information Control Technology) infrastructure (server, storage, networking, and security virtualized through hardware-independent management system.
    Software-Defined Data Center (SDDC) pioneered by VMware, is this.
  7. As the server speeds up, _____ air is delivered, when the server slows down, _____ air is delivered. PP 31
    As the server speeds up, more air is delivered, when the server slows down, less air is delivered.
  8. Self-Contained In-Row Cooling come in many varieties such as chilled water-cooled air-cooled DX, low-pressure pumped refrigerant and even CO2 cooled. These are best applied when? 31 Data Center Handbook: 2015, Hwaiyu Geng. Wiley & Sons Inc
    These are best applied when there is a grouping of high-density, high heat generating servers that creating difficulties for the balance of the data center.
  9. Once the staple of data centers of yore, sectors like academic research high-performance computing continue to use water-cooled computers and is typically not thought of as an airflow management strategy, but it is. The water cooling keeps the airflow through the computer to a minimum. Components not water-cooled still need airflow for heat dissipation. Typically a water-cooled cabinet will reject _____% of the total cabinet power capacity to the air, a nontrivial number when the IT cabinet houses 50-80 kw computers. PP31 Data Center Handbook: 2015, Hwaiyu Geng. Wiley & Sons Inc
    Typically a water-cooled cabinet will reject 10-30% of the total cabinet  power capacity to the air
  10. Proper airflow management creates cascading efficiency through many elements in the data center. If done correctly, it can significantly reduce problems related to re-entrainment of hot air into the cold aisle, which is often the culprit of? PP30 Data Center Handbook: 2015, Hwaiyu Geng. Wiley & Sons Inc
    re-entrainment of hot air into the cold aisle, is often the culprit of hot and thermal overload.
  11. Immersion cooling is a technique that submerges the servers in a large container of mineral oil. The servers require some modification; but by using this type of strategy _____are eliminated from the computers. The oil is circulated through the container around the servers and is typically pumped to heat exchanger that is tied to outdoor heat rejection equipment. PP32 Data Center Handbook: 2015, Hwaiyu Geng. Wiley & Sons Inc
    by using this type of cooling strategy fans are eliminated from the computers.
Author
johnbowens
ID
330956
Card Set
Data Center Handbook
Description
this card set is based in most on the “Data Center Handbook”, Hwaiyu Geng 2015
Updated