lecture 4 -servers(1)

lecture 4 -servers(1) - IST 346 Week #4 Chapters 4 and 21...

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IST 346 Week #4 Chapters 4 and 21
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Servers What is a server? What makes a server unique from a desktop? Server hardware is different from desktop hardware. When building a server, buy a server from a reputable company. Don’t ‘build-it-yourself’ or buy it from a company that assembles ‘severs’ from commodity or off-the-shelf parts. Don’t get caught up in the idea of buying a desktop PC, installing a server OS, and putting it into production as a server.
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What Makes a Server a Server Attributes of Real Server Hardware Extensibility / Expandability More CPU performance High Performance Input / Output (I/O) Upgrades and Upgradability High Availability Options Maintenance Contracts Management Options
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Extensibility / Expandability Multiple network cards Multiple hard drive controllers (RAID controllers) Have more internal hard drive bays (up to 10+) per server Choice of HD’s, 3½” or 2½” drives. Servers typically have more expansion slots and multiple kinds of slots, ex: PCI-e, PCI-X, PCI, etc. Many more memory slots than workstations hardware
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More CPU and IO Performance Can typically have 4 or more CPU’s per chassis. Can select higher performing CPU’s vs. desktop systems Use faster hard drives such as SCSI or Fiber Channel, solid state. Can connect to SAN (storage area network) so they may not have ANY internal drives at all.
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Better Upgrade Options Can be upgraded easier. Sometimes without even having to power off the server. Add new HD’s, more memory, and more I/O or network cards without a power-off. Can disable PCI slots inside server via management software. http://www.youtube.com/watch?v=6CiOA-47iMw
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Rack Mountable Purchase servers that can be installed in a “Rack” whenever possible. More servers per square foot. Remember from last week, server room space is expensive Easier to maintain. Rack mount server overview video found at http://www.youtube.com/watch?v=ecHyVPLvcH0 Pre-plan out your rack by the use of U’s or rack units. Each “U” is 1.75 inches
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High Availability Options Redundant Array of Inexpensive Drives (RAID) capability Hot-Swap components such as power supplies. Two or more supplies in same server where the
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This note was uploaded on 12/13/2011 for the course IST 346 taught by Professor Rieks during the Fall '11 term at Syracuse.

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lecture 4 -servers(1) - IST 346 Week #4 Chapters 4 and 21...

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