Random Read & Write Patterns

Now we’ll see the dependence between the drives’ performance in random read and write modes on the size of the data block size.

IOMeter: Random Read

The new HDDs from Seagate and the Hitachi go neck and neck at random reading. The Fujitsu is slower, especially with small data chunks.

IOMeter: Random Write

It is different at random writing: the Hitachi is ahead with small data chunks and joined by the Fujitsu with medium-size data blocks. The Hitachi’s low sequential write speed shows up with large data chunks and this drive slows down whereas the Seagate HDDs catch up with the Fujitsu then.