Sun has developed a 1U chassis design that can handle an impressive number of drives, yet also provide for a standard two-socket Intel-based mainboard and the company's signature four gigabit Ethernet interfaces, not to mention a relatively advanced Lights-Out Management coprocessor. The Intel-based Sun Fire X4150, AMD-based X4140, and SPARC-based T5120 and T5140 servers all look identical to the casual observer, but each offers a different take on the purpose of the ubiquitous 1U server.

I've had a Sun Fire X4150 in my lab for a few months now -- running everything from Windows Server 2003 and Windows Server 2008 to CentOS 5.1 and VMware ESX 3.5. Overall, I've found it a quiet, capable server that tends toward the lower end of the power consumption spectrum. All in all, it's a very real competitor to HP's ProLiant DL360 G5, IBM's x3550, and Dell's PowerEdge 1950 III. In fact, the fit and finish of the X4150 are generally better than the rest of the field's and far ahead in local storage.

Taking the high road

The Sun Fire X4150 in my lab is equipped with two Intel E5440 quad-core Xeon CPUs running at 2.83GHz per core and with 6MB of L2 cache per pair of cores. The X4150 can handle up to eight 2.5-inch SAS drives (mine has four 10K drives, 72GB each), 64GB of RAM (mine has 16GB), four gigabit Ethernet interfaces, and three PCIe slots. This puts the X4150 ahead of the mainstream server pack, as the main contenders in this space generally offer a maximum of 32GB of RAM, and between four and six local disks. With the four built-in gigabit NICs, the X4150 not only saves a slot that might be used for more Ethernet interfaces, but it offers three PCIe slots -- one more than HP, Dell, or IBM. In addition to those specs, the X4150 also sports two USB 2.0 ports up front, two in the back, and one internally -- very handy for software licensing or to boot from flash.

Some of these features might seem overkill for a 1U server, which is widely believed to be fine for light duty, but not for tasks requiring real horsepower. It would seem that Sun doesn't buy into that theory. The X4150 is priced similarly to other servers of comparable spec, yet offers storage and I/O capabilities generally found in 2U and larger systems -- this not only saves on rack space, but given the relatively low power consumption of the X4150, it can save on power as well.

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