RAID 0 TESTING – AS SSD
AS SSD is becoming a forerunner of SSD testing, as it covers many important metrics relating to SSD performance. There is a bit of a large difference in the sequential read speeds of the 1882 over the 1880. In RAID 0 there will be some differences in results, primarily leaning towards the 1880.
Here some of the results, in particular the 4K QD1 random read (4K) are benefiting from cache. This is indicative of the type of results that one could expect with access to data that is cached, or short ‘bursty’ types of access.
The .ISO testing suite within the AS SSD benchmark shows some usage patterns that are indicative of certain copy usage patterns. Different file types will ‘handle’ differently, and this test highlights those differences.
Finally the Compression Suite below rounds out the AS SSD testing suite. This battery of tests emphasizes the differences in speeds with different levels of compressible data. The C300 handles data very evenly and does not rely on compression as much as other solutions.
This test shows again some large differences between the controllers in regards to sequential read speeds . The 1882X here pulls away with 2.9 GB/s read speeds.
Finally for this set of tests we use Crystal Disk Mark as a control to verify that our results are replicable with other testing programs.
One key variance here is that Crystal Disk Mark allows the user to assign a size of the test pattern. Here we utilize the 4000MB settings to eliminate cache interference with the testing results. The cache on the cards is limited to 1GB, so the 4GB test size keeps the test out of the realm of the cache.
The key difference in this testing is the 4k QD1 results (4K). Here being out of the cache of the controller we can get a much better representation of the true results of sustained access. A very solid showing from both cards, but again the 1882X continues to pull ahead with sequential access.