Sun and Fujitsu Tuesday are introducing new servers that they jointly developed, while another server maker, Hitachi, is unveiling new blade servers. They each aim to address buyers' dual needs for computing power and energy efficiency.

Sun and Fujitsu, who have jointly developed and marketed products for about 20 years, introduced six new servers: the T1000 and T2000 entry-level servers that run on the Sun-designed UltraSparc T1 processor; the midrange M4000 and M5000 and the high-end M8000 and M9000, all of which are powered by Fujitsu's Sparc 64 VI processor. The new servers will be offered under the Sun, Fujitsu and Fujitsu-Siemens brands. Fujitsu has a separate joint venture agreement with Siemens.

The entry-level models feature two quad-core processors, 64G-bytes of random access memory (RAM) and have the virtualization capability to run up to 32 virtual machines in one physical machine. The midrange models feature up to 64 dual-core sockets, processor speeds of up to 1.4G-hertz, and up to 2T-bytes of memory. The high-end servers offer 32 or 64 cores depending on the model, processing speeds of up to 2.4G-hertz, and up to 2T-bytes of memory.

The servers are available with Sun's Solaris 10 operating system. Sun guarantees that software programs designed to run on Solaris 8 or Solaris 9 will work on a Solaris 10 machine.

The new Sun and Fujitsu introductions seem to be "an installed base play," rather than a bid for new customers, said Vernon Turner, group vice president and general manager of enterprise computing at IDC.

"For some customers this is a way of saying 'We love Sparc, but what we want is something that is competitive in terms of performance and probably price as well,'" said Turner.

Hitachi is investing more in the blade server format with a follow-up to the BladeSymphony 1000, which it introduced in November 2006. The new BladeSymphony 320 differs from the 1000 in that it only comes with Intel Corp.'s Xeon dual-core or quad-core processors, not Intel's Itanium processor.

The 320 also is available with a 110-volt power option, which means the server can run simply by plugging it into a standard U.S. electrical outlet.

"They don't need the raised floor design or an air conditioning system of a data center," said Steve Campbell, vice president of marketing in the Server Systems Group of Hitachi Americas.

The IDG News Service is a Network World affiliate.

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