Check that you have Write Cache enabled on the controller.
Also if you have not placed data on the volumes but only for testing then you can delete them from the Extended tool then use the link below to test your read and write speed from raid array to determine if it is the controller or other.
Hi To-M
Thank you for your answer.
Cache mode is set to AlwaysWriteBack
From the Benchmark menu I get the next result
READ 971MB / sec
WRITE 1.1GB /sec
Any ideas?
PS I tried to change QLE2462 to QLE2562 on both sides, and I got the next result
READ STABLE 650MB /sec
WRITE UNSTABLE (witj a lot of interrupts) from 150 to 400 MB / sec