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Backup Management

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Virtualization doesn't necessarily provide protection against system failure if the network is a single point of failure. We explain how to set up redundant network connections for virtual machines running VMware ESX.

Windshield Wiper

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A bunch of remote access tools for Linux, Mac OS, and Windows are based on the VNC protocol. We show you why UltraVNC is the best of the bunch.

Hot Off the Press

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Version 5.6 of Citrix XenServer is a feature-stripped version of the virtualization product and is available free, in addition to the commercial Advanced, Enterprise, and Platinum editions.

Snakebyte

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Overcome the Global Interpreter Lock in Python and take advantage of run-time parallelism on multicore machines.

Hyperspace

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In the face of competition from VMware, Microsoft has polished its own Hyper-V virtualization solution and firmly integrated it into Server 2008.

The Present and Future Network

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Energy Saver

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Many applications interrupt the CPU when it tries to sleep. PowerTOP not only identifies these evildoers but also provides tips on how to get rid of them.

Bug Hunter

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We sat down with Dan Rosenberg, security consultant and kernel bug hunter, to talk about code auditing, kernel fuzzing, and getting started in the security business.

NodeZero Linux

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Disk World

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Windows 7 implements virtual hard disks as VHD containers that offer many advantages over physical drives. We take a closer look.

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