SANDISK EFD – IOMETER TESTING: 4K MIXED READ/WRITE
The Iometer testing continues with mixed read and write results for both controllers. The mixed read/write testing is the hardest for RAID arrays. The parameters of testing for this remain the same, with 8GB testfiles, 2 managers, and 64k Stripe Size for both controllers.
We will compare results of the two controllers directly, as the scale of the differences in performance, while still large, aren’t nearly as noticeable. The LSI leads by multiples of 3 in the RAID 0 mixed read/write testing scenario. Simply amazing to see a random read/write score that high with a mixed ratio here, a testament not only to the 9265, but also the Lightning LS drives.
RAID 5 results are again very lopsided in favor of the LSI controller. This test of RAID 5 with the mixed read/write ratio shows us clearly that there is surely no area that the Adaptec can best the LSI controller.
The 4k results for the Adaptec merely show how hard it is for most controllers to deal with any form of RAID 5 writing. The 9265 is simply herculean here, absolutely dominating the competition.