X-bit labs

ATA RAID Controllers: Roundup of Four Low-Cost Models (page 7)

Category: Storage

by Andrey Kuznetcov

[ 01/25/2004 | 11:05 PM ]

Performance in Intel IOMeter WorkStation Pattern

With the help of WorkStation pattern we imitated the work of our HDDs under the workload typical of a workstation limited at 32 requests max.

Let’s check how the controllers affect the RAID 0 array performance in this pattern:

Again we can single out two pairs of almost identical lines, which reflect the influence of Promise controllers and a pair of ITE IT8212F and VIA VT6410. 133Lite and TX2000 models turn out more efficient: RAID array performs really fast in case of any queue depth except queue=1, where the results of all controllers are almost equal.

The diagram with the total performance index, you can notice that the maximum performance of the RAID array is achieved with Promise TX2000 controller, which appeared a little bit more efficient than 133Lite.

The RAID 1 array doesn’t show anything new compared to what we have just seen with RAID 0. The lines on the graph look very similar. The only difference is the overall lower results. Again Promise controllers win the race.

The overall performance graph shows that two pairs of controller run neck and neck.