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Performance in Intel IOMeter DataBase Pattern

As usual we will start our discussion with the results of the DataBase pattern. If you are looking for exact numbers, check out the table below containing the results for Total I/O demonstrated by the drives under 5 types of workload (we changed the requests queue depth) in 11 modes with various write requests share (from 0% to 100% with 10% shift).

Now let’s take a look at the testing participants and their performance with U160 controller (Adaptec 29160N) and U320 controller (Adaptec 39320D) in case of different queue depth. We will start with linear workload (one outgoing request):

As we see, the HDDs behave the same way with both controllers. Maxtor drive is the fastest in RandomRead mode, i.e. with no write requests at all. And there is nothing surprising about it actually, because Maxtor drive boasted the lowest average seek time value of all the today’s competitors. However, as the share of write requests grows up, Fujitsu drive catches up with Maxtor and outperforms it in those modes where the writes share is equal or over 80%. Exactly in these modes Maxtor drive looks weaker than its competitors.

Seagate drive appeared as fast as Fujitsu drive in RandomRead mode, however, yielded to the latter in all modes with write requests.

 
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