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Performance in Intel IOMeter

I used Sequential Read and Write patterns of Intel IOMeter to check out the read and write speeds of the drives. Besides, I ran the Workstation pattern – to estimate the disk subsystem performance when the desktop PC works as a workstation. Again, I shortened the list of participators to four and five models.

Sequential Read Pattern

This test measures the linear read speed with data blocks of variable size. The new Seagate Momentus ST94811A looks not bad here. It is ahead up to 8KB blocks. However, its speed dropped down by 1.5 times as it came to 4KB blocks. Then, it slows down more on 1 and 0.5KB blocks. The Toshiba drives show stable results, dropping their linear read speed on 512-byte blocks only.

Sequential Write Pattern

Seagate Momentus ST94811A makes it through the write speed test quite well. It is fastest up to the 4KB data block and loses in speed on smaller blocks. The pair of drives from Toshiba again shows stable results, dropping the speed on the 512-byte block only.

Workstation Pattern

We calculate the Workstation ratings according to the formula:

Performance = Total I/O (queue=1)/1 + Total I/O (queue=2)/2 + Total I/O (queue=4)/4 + Total I/O (queue=8)/8 + Total I/O (queue=16)/16 + Total I/O (queue=32)/32

Seagate Momentus ST94811A builds up the most effective disk subsystem. This drive wins in every single mode and, of course, has the highest integral result. Fujitsu MHS2060AT is the second and Toshiba MK-4019GAX is the third.

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