|NETGEAR ReadyNAS NV+ v2 NAS Server|
|Reviews - Featured Reviews: Network|
|Written by Bruce Normann|
|Tuesday, 31 July 2012|
Page 13 of 15
Non-Traditional NAS Test Results
In addition to measuring simple timed transfers, to determine how fast it will read and write contiguous blocks of data, Benchmark Reviews was also able to measures NAS performance using some tests that are traditionally used for internal drives. By mapping the ReadyNAS NV+ v2 as a local drive, some of our favorite HDD/SSD benchmarking tools worked just fine. Some NAS products don't work too well with this type of test program; even though they may have the ability to map the NAS device to a drive letter, they're still not treated like local drives by the Operating System. I didn't see that problem with the ReadyNAS NV+ v2, so let's look at some results...
ATTO Disk Benchmark Results
The ATTO Disk Benchmark program is free, and offers a comprehensive set of test variables to work with. In terms of disk performance, it measures interface transfer rates at various intervals for a user-specified length and then reports read and write speeds for these spot-tests. There are some minor improvements made to the 2.46 version of the program that allow for test lengths up to 2GB, but all of our benchmarks are conducted with 256MB total length. ATTO Disk Benchmark requires that an active partition be set on the drive being tested. Please consider the results displayed by this benchmark to be basic bandwidth speed performance indicators.
The NETGEAR ReadyNAS NV+ v2 turned in a solid performance on ATTO, reaching a peak Read speed of 90.4 MB/s and a peak Write speed of 50.6 MB/s. It's good to keep in mind that these tests are not always indicative of real-world performance. In this case though, these results were close to the numbers achieved in timed Read and Write tests. It's important to note that roughly 95% of the maximum performance level was reached by the 32 kB block size. That's a sign of both good RAID management, and the high performance hard drives that are used in our testing.
CrystalDiskMark 3.0 is a file transfer and operational bandwidth benchmark tool from Crystal Dew World that offers performance transfer speed results using sequential, 512KB random, and 4KB random samples. For our test results chart below, the 4KB 32-Queue Depth read and write performance was measured using a 1000MB space. CrystalDiskMark requires that an active partition be set on the drive being tested. Benchmark Reviews uses CrystalDiskMark to illustrate operational IOPS performance with multiple threads. In addition to our other tests, this benchmark allows us to determine operational bandwidth under heavy load.
The combination of the NETGEAR ReadyNAS NV+ v2 and four Western Digital Caviar Black WD7502AAEX 7200 RPM 64MB Cache SATA 6.0Gb/s generates some good numbers in this test. It pulls a respectable 57.4 MB/s on sequential Read and 46.5 on sequential Write tests. The 4k tests show very low numbers, but that's typical of HDDs, even in a RAID configuration. That's one of the huge advantages that SSDs bring to the table, is the ability to handle thousand of small data chunks very gracefully.
All in all, these are a respectable set of results for Network Attached Storage. Sure, they're a bit lower than a true local drive connection, directly into the SATA controller on the motherboard. But, for a NAS device mimicking a local HDD, the ReadyNAS NV+ v2 performs very well at the price point.