When it comes to protestations of too-high entry costs for server virtualization, Gerod Carfantan of VMware is a skeptic. He decided to develop a spreadsheet to find out what the virtualization breakeven point is, in terms of a minimum number of servers required for financial breakeven of virtualization, relative to traditional, physical servers.
David Marshall, writing for VMware has published a brief article on "The Five Virtues of Virtualization," that explains how the technology can make a physical resource appear as multiple logical resources and, similarly, also make multiple physical resources appear as a single logical resource.
A recent weblog of Alexandre Chartre's discusses LDoms Virtual Disks, beginning with the examination of the components of the virtual disk, which are the virtual disk itself and the virtual disk backend. The first is a domain guest and the second a locale where data is stored and where virtual I/Os end up.
A recent Sun BigAdmin paper provides readers with an "Overview of Sun Integrated Lights Out Manager (ILOM)." The paper describes ILOM as an advanced service processor used to manage and monitor Sun servers. ILOM includes dedicated hardware and firmware that is preinstalled on a variety of Sun x64-based Sun Fire servers, Sun Blade Modular Systems, and Sun Blade server modules, as well as on some SPARC-based servers.
Sun BigAdmin has a site devoted to Sun Configuration Diagram Templates to help system administrators quickly document a system configuration. Accompanying the templates, Tom Meier has an article posted on the BigAdmin Website offering users tips on using the Configuration Diagram Templates, which are made with StarOffice software.
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