Chris_Van_Genderen@NexFlash.com wrote:

When did you perform your evaluation of the IP4700?

Last week.

On the F85 performance figures, the performance you are quoting seems pretty bad. Is there an unusually small block size in your application, or another reason you can account for such a difference?

95Mbits/sec throughput on a 100Mbits/sec connection is extremely good. It is running near the max rate of the connection. The 95Mbits was the data rate. That excludes the packet's header overhead. I'll have to check with the engineer who did the actual testing to find out what block sizes he was using.

What was EMC's response regarding performance when you showed them your data?

They said that we should run multiple threads. The aggregate bandwidth abilities of the box could keep the links saturated, but the single threaded reads and writes ran into the limitations that I've mentioned. In our application, we need for the single thread to be able to read and write and high speed. We have a single data stream coming in off of a device that has to be written to the filer.

barry

Chris Van Genderen Software Engineer & Applications Manager NexFlash Technologies, Inc. chris_van_genderen@nexflash.com 408-969-4714