Data Center

Network, server, and storage administrators get valuable advice and best practices to help meet the challenges they face in keeping systems connected, available, and running at high efficiency.

  • Rick Vanover // August 17, 2008, 6:01 PM PST

    Virtual switching configurations require network admin

    The virtual switch concept in virtualization environments is critical to an agile installation. Be sure to get a network admin checkout of the configuration, as the configurations could stand to be optimized based on the physical configuration.


  • Andy Moon // August 18, 2008, 1:33 PM PST

    Is your wireless network secure?

    In a recent tour of San Francisco, Oakland, and Palo Alto, a leading security expert discovered over 2600 networks, nearly a third of which were not using any encryption at all.


  • Kris Littlejohn // August 19, 2008, 12:58 AM PST

    What IT pros should know about repetitive stress injuries

    Long hours at the keyboard can lead to a host of problems for IT professionals. Here's a look at symptoms to watch out for, steps you can take to prevent injuries, and what to expect if you seek treatment for any type of RSI.


  • Andy Moon // August 19, 2008, 1:13 PM PST

    The cloud is getting more secure, except from the government

    Cloud computing is poised to be the next "disruptive technology" on the scene. It's a powerful concept, but the price may be your privacy. A little known provision of federal law allows officials to snoop into data stored at an ISP without taking the trouble of narrowly scoped warrants based on probable cause presented to a judge.


  • David Davis // November 5, 2008, 10:00 PM PST

    Learn how the Cisco IOS parser command can speed up response time

    On routers with large running configurations, the parser cache is used to speed up the "parsing" of that IOS configuration when the configuration is accessed and processed by the router. David Davis explains what the parser cache does and how it can help you.


  • Selena Frye // November 10, 2008, 2:59 AM PST

    Routing and switching essentials for beginners

    If you are a beginner looking for information on routing and switching devices, these short papers will introduce you to the basic concepts.


  • Rick Vanover // November 10, 2008, 2:39 PM PST

    How do you manage a mobile mini-datacenter?

    Every network administrator may at some point create or support a mobile collection of equipment for use between sites or at other destinations. Rick Vanover shares some strategies that can be used to manage this type of network.


  • Michael Kassner // November 11, 2008, 3:15 AM PST

    Botnets: Keep computers up to date or else

    Getting rooted by a drive-by dropper is fast becoming the predominate method of involuntarily joining a botnet. The simplest way to avoid this is to keep your computers up to date. Easier said than done? Well, it doesn't have to be.


  • David Davis // November 13, 2008, 10:00 PM PST

    Check out the most powerful Cisco routers ever made

    They may not be appropriate for your home, office, or even your enterprise, but some of the most powerful routers in the world make it possible for you to surf the Web and send e-mail around the globe. David Davis introduces you to Cisco's lineup of service-provider routers.


  • Rick Vanover // November 16, 2008, 10:15 AM PST

    Use iperf for quick and easy network tests

    Being able to quantify latency in terms other than millisecond response time is important when determining the quality of a network. One tool that can help administrators do just that is iperf.


  • Michael Kassner // November 16, 2008, 10:59 AM PST

    Botnets: Web-hosting site closed down and spam drops 50 percent

    Two contracted ISPs stopped providing Web hosting firm McColo with Internet access, which immediately quieted several major botnets responsible for almost half of all delivered spam. Learning how and why this was done is worth your time.


  • Selena Frye // November 19, 2008, 5:38 AM PST

    HomePlug revival continues with new Netgear Powerline gear

    Netgear has released the new Powerline HD Plus Ethernet Adapter Kit (HDXB111) and Powerline AV Ethernet Adapter Kit (XAVB101).


  • David Davis // November 20, 2008, 10:00 PM PST

    Filter Web content with Cisco IOS routers

    Today, filtering content at many companies isn't just optional; it is a legal requirement and something you have to do to prevent employees from getting into trouble. David Davis explains how Cisco IOS routers can filter Web content with the help of outside services.


  • Brad Bird // November 25, 2008, 2:37 AM PST

    Dissecting default NTFS permissions: Looking under the hood

    Consultant Brad Bird takes a look at NTFS file permissions and their default application. Make sure you understand what each of them includes and how they are inherited through the hierarchy to close up security gaps.


  • Selena Frye // November 25, 2008, 5:52 AM PST

    The seven types of power problems

    One of the basic parts of your network infrastructure is, of course, your power supply. It's as basic as you can get, but you can't afford not to understand how your systems are powered and what kinds of problems to look out for.