Performance in Intel IOMeter Sequential Read & Write Patterns

In this test the HDDs are handling a stream of read and write requests with a request queue depth of 4; the data block size changes every minute. The highest results are highlighted with blue in the tables and the lowest – with red.

Hitachi 7K60 is not inclined to give up its superiority; it is the fastest device. Meanwhile, it is not best, but rather average in reading small data blocks. The second new product from Hitachi – 5K80 – gets the second place in reading speed. Seagate Momentus is the third. Hitachi 40GN is the slowest of all. Note also the results of Toshiba MK8025GAS: excellent reading of small data blocks and the drive quickly gains its maximum speed – starting at 1KB blocks. Probably, some technological tricks in the drive electronics account for this performance.

The second diagram shows you the sequential write speed. Overall, we’ve got the same situation with the trio of the leaders and the outsider - Hitachi 40GN. Toshiba MK8025GAS is again working wonders with small-size blocks – it’s definitely better than the rest of the drives in this aspect.