|ACARD ANS-9010 DDR2 SATA RAM-Drive|
|Reviews - Featured Reviews: Storage|
|Written by Olin Coles|
|Thursday, 26 March 2009|
Page 8 of 12
EVEREST Disk Benchmark
Many enthusiasts are familiar with the EVEREST benchmark suite by Lavalys, but very few are aware of the Disk Benchmark tool available inside the program. The EVEREST Disk Benchmark (version 2.06.37) performs linear read and write bandwidth tests on each drive, and can be configured to use file chunk sizes up to 1MB (which speeds up testing and minimizes jitter in the waveform). Because of the full sector-by-sector nature of linear testing, Benchmark Reviews endorses this method for testing SSD products, as detailed in our Solid State Drive Benchmark Performance Testing article.
The SSD products tested with EVEREST Disk Benchmark are connected to the Intel ICH10R SATA controller resident on the Gigabyte GA-EX58-UD4P motherboard. Using the 1MB block size to test the ACARD ANS-9010, linear read performance 177 MBps in standard mode, and 195-352 MBps in RAID-0. The write-to speeds were a little different, with non-RAID mode offering the fastest speed of 176 MBps, while RAID-0 could muster no better than 160 MBps. Linear write-to tests were next...
Linear disk benchmarks are superior tools in my opinion, because they scan from the first physical sector to the last. In terms of the ACARD RAM-Disk, the speeds achieved will vary, widely dependant on the number of DDR2 RAM modules used and their native speed and timing. Since the ANS-9010 doesn't offer a GUI or other user-configuration interface, we're left guessing at the real speed and latency the RAM-Disk sets the modules to operate at.
The chart below shows the average linear read and write bandwidth for a cross-section of drives attached to the Intel ICH10 Southbridge. I personally consider this the single most important comparison of storage drive products, and although the results for the OCZ Apex appear bit crippled (because of specific OCZ firmware incompatibilities with EVEREST), all of the others are spot-on.
Linear bandwidth certainly benefits the Solid State Drive, since there's very little fluctuation in transfer speed. Hard Disk Drive products decline in performance as the spindle reaches the inner-most sectors on the magnetic platter.
In the next section, Benchmark Reviews tests the buffered transaction performance for the ACARD ANS-9010 SSD using HD-Tach, and compare the results to dozens of other products.