Next goes our homemade test of defragmentation speed. We created a very defragmented file system on a 32GB partition of a disk by loading it with music, video, games and applications. Then we saved a per-sector copy of the disk and now copy it to the disk we want to test. Next we run a script that evokes the integrated defragmenter of Windows 7 and marks the time of the beginning and end of the defragmentation process. For more information about this test, you can refer to this article.
We must remind you that defragmentation is useless and even harmless for solid state drives due to their operation principles. However, we use this test as it allows to benchmark their performance at a rather peculiar load that involves both reading and writing of small data blocks.
The X25-E does not participate in this and next tests because our test image is exactly 32 gigabytes large and does not fit on that SSD.
This test proves how real-life loads may differ from theory. This test is won by the 256GB Western Digital whereas its 128GB cousin spends twice the time and takes last place. The X25-V array is 50% faster than the single such SSD.
Performance in WinRAR
Now we are going to show you one more interesting test in which we use WinRAR version 3.91 to compress and then uncompress a 1.13GB folder with 8118 files in 671 subfolders. The files are documents and images in various formats. These operations are done on the tested drive. This test depends heavily on CPU performance, but the storage device affects its speed, too.
The RAID is surprisingly poor in this test. Its results are as low as if the array was doing anything but archiving most of the time. The rest of the SSDs fall into two groups: the faster group includes the 256GB WD and the Kingston. The X25-V and the 128GB WD are in the slower group.
It’s simple in the unzipping test: the two drives from Western Digital share top place, leaving their opponents far behind.