S150 SX4 Benchmarks







The FCtest results get pretty interesting now: when testing with small files, the read2 speed is clearly MUCH faster than the read1 speed. In the WIN-read test (1,06GB,9006 files), read2 is more then 2.5 times faster than read1 (30MB/s <-> 80MB/s)! This is the result of the 256MB of cache that I put on the controller. With the PROG-read test (1.38GB, 8504 files) the difference is smaller but still nice with a factor 1.5. In the ISO-test, no difference is noticeable. I guess that's because of the file size: they are too big to fit in the cache. All test setups manage to read these files at very high speeds: up to 125MB/s!

As for the creating: it is clear that the RAID5-setup isn't a fast writer: the setup was able to create the big files at 40MB/s (which is ok), but the smaller files are written at a maximum speed of 15MB/s. The 4xstriped array was able to write the big files at 60MB/s, while it wrote down the smaller files at 40MB/s. Very respectable results there!

When comparing the 2 RAID5 setups (3disk and 4disk), we see almost no speed difference: max 8MB/s when reading small files, almost no difference in all other tests.



Sandra gives us the results we expect: the 4disk striped array leads by far (70MB/s), followed by the 4disk RAID5 at about 56MB/s. The 3disk is just a tid slower: 54MB/s to be exact.