I am sorry to hear you are having problems with the Intel® Rapid Storage Technology but let me help you.
It is important that the Intel® Rapid Storage Technology will provide the capability to manage the array but I at this point there is no way to check the status of every single HDD. The software will rebuild the array when there is an error or a problem with the structure.
Is there a log to indicate why the software wants to rebuild the array?
I installed a tool called Argus which allows me to see the SMART status of each drive.
They are all marked "OK".
How do I figure out why IRST wants to verify the array every four or five days?
Intel® Rapid Storage Technology has been designed to check and rebuild automatically the structure when it is necessary but I am afraid there is no way to change this setting or check the event log since it does not have one for the software yet.