Cavalry Storage CAND3001T0 1TB Network Drive ReviewNemo - February 4, 2009
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After setting up the CAND3001T0 and running through the performance tests, it's time to turn our attention to the practical operation of the unit and look at how it holds up in day-to-day operations.
The CAND3001T0 has a single 60mm on the rear of the unit that spins fast enough to push just enough air to be felt, but not so fast as to generate an annoying whirring sound typical of small fans at high RPMs. While the fan is audible, it doesn't generate enough noise to be annoying. The CAND3001T0 has a series of ventilation slits that run along the bottom, left side and top of the case front. The two drives are mounted on top of each other in the drive cage with no allowance for air movement between them. The top drive will experience some air movement along its top surface due to the ventilation slits along the left side of the front cover.
During the testing process I didn't notice the case becoming unusually warm, but since the case is made entirely of plastic you wouldn't expect as much thermal transfer as you would get with a metal case. To test the cooling efficiency of the system, I used the NAS performance Toolkit to run a full series of tests in a RAID-1 configuration and monitored the S.M.A.R.T. drive temperature readings. To monitor the interior case temperatures I inserted a digital temperature probe into the case with the probe positioned directly to the rear of the drives in the center of the case. Temperature readings were taken prior to the run with the hard drives spinning and then throughout the test.
|Ambient Room||21 C||21 C|
|S.M.A.R.T. Drive 1||33 C||38 C|
|S.M.A.R.T. Drive 2||34 C||39 C|
|Case Interior||31 C||34 C|
The drives really didn't get too hot during the tests, which is a testament to the fan size as well as to the Western Digital Caviar Green drives, which are designed to use less power and generate less heat. Your mileage may vary, but you should not see temperatures as high as we saw during testing unless you are really pushing a lot of data back and forth.
NAS boxes with their lower power processors and lack of power hungry graphics cards are a much more eco-friendly way to share data compared to building even a stripped down PC-based file server. The CAND3001T0 uses Western Digital Caviar Green drives, which are designed to use less power and generate less heat. Western Digital claims its Green series drives average power savings to be 4-5 watts when compared to regular desktop drives.
|Power Mgt. Mode||7||8|
In looking at the comparative power usage there isn't a big difference with both units in power management mode with the disks not spinning, although that 1 watt difference works out to 12.5%. In idle mode with the disks spinning but no I/O activity, the Caviar Green drives consume 8 watts less, a 42% savings. Peak usages during the testing show a 3-4 watt saving in favor of the CAND3001T0. With either system you are going to recognize a significant advantage over a PC-based file server.