|ACARD ANS-9010 DDR2 SATA RAM-Drive|
|Reviews - Featured Reviews: Storage|
|Written by Olin Coles|
|Thursday, 26 March 2009|
Page 7 of 12
ATTO Disk Benchmark Results
EDITORS NOTE: ATTO Disk Benchmark is not designed to be used as bandwidth speed tool, as the final results are determined by user-set variables. Benchmark Reviews uses ATTO Disk Benchmark as a tool for illustrating basic IOPS load performance at various chunk load sizes. Please read the Solid State Drive Benchmark Performance Testing article to understand how the benchmarks used in this article should be interpreted.
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 2.34 version of the program, but the benchmark is still limited to non-linear samples up to 256MB. While the bandwidth results are no realistic for determining the maximum drive speeds, ATTO Disk Benchmark is still a good tool for illustrating the bandwidth at different file size chunks. Please consider the results displayed by this benchmark to be basic IOPS performance indicators.
Beginning with the integrated Intel ICH10R Southbridge chip connected to the ACARD ANS-9010, the ATTO Disk Benchmark tools performs file transfers ranging from 0.5 KB to 8192 KB. The DDR2 RAM-Disk shows a read and write plateau ranging from 128-4096 KB file chunks. Because the ACARD ANS-9010 can be configured so many different ways (depending on the number of DIMMs populated and density of modules), Benchmark Reviews has decided to offer perspective on several various set-ups.
ACARD ANS-9010 4GB @ 2 DIMMs
ACARD ANS-9010 8GB @ 4 DIMMs
ACARD ANS-9010 4GB/2 DIMMs in RAID-0
ACARD ANS-9010 8GB/4 DIMMs in RAID-0
After watching the peak read bandwidth measure 187 MBps and write-to speeds max at 153 MBps, I was totally shocked by the RAID-0 performance. On its own merit, the standard (P0) single SATA connection did quite well, and 187/153 isn't at all bad. However, I don't expect anyone to be using the ANS-9010 as a primary drive. This is a RAM-Disk, and most people who use these products plan to utilize it more for speed; RAM-Disks are not typically used for data storage.
So RAID-0 is clearly what ACARD intended for their ANS-9010 RAM-Disk, and that's exactly how Benchmark Reviews will test it. Looking over the various results for the RAID-0 configuration, you can see that the using only two DDR2 modules to populate the inner (yellow) DIMM slots offer the best speeds. With only two DIMMs occupied with 4GB or DDR2 RAM, the ACARD ANS-9010 performed at 510 MBps read and 157 MBps write. The read-from bandwidth was phenomenal, and we've yet to see another product come anywhere near that speed. The write-to bandwidth wasn't so impressive, as it remained nearly identical to the non-RAID configuration.
In our next section, we test linear read and write bandwidth performance of the ACARD ANS-9010 RAM-Disk and compare its speed against several other top storage products. Benchmark Reviews feels that linear tests are the best method for testing SSD products, as detailed in our Solid State Drive Benchmark Performance Testing article.