Performance

Intel IOMeter: Sequential Read & Write Patterns

This low-level benchmark helps explore the speed characteristics of a hard disk drive as it is performing sequential reading and writing. The utility is sending a stream of read and write requests with a request queue depth of 4. The size of the requested data block is changed each minute, so we will see the dependence of the driver’s linear read/write speed on the size of the data block.

The linear read speeds of the drives are shown in the first diagram. The Hitachi HTS721010G9AT00 – the drive we are interested in – has a higher speed than its Serial ATA version, but both are slower than the two drives from Seagate when reading small-size data blocks.

The sequential write diagram resembles the previous one: the Hitachi HTS721010G9AT00 looks somewhat better than its Serial ATA version, but both are slower with small data blocks than the drives from Seagate.