I'd like to check the status of a disk, used individually or in raid.

I see that there is a agent parameter called PhisycalDisk.SmartStatus but i don't understand how to use it. I see that netxms agent is able to retrieve data only if i pass to the function the 0 argument (PhisycalDisk.SmartStatus(0) ), also in the case in wich the server have 2 or more disk(if i pass 1 or 2 to the function, no value is returned).

Can someone please explain me how can i use this parameter?Thank you!

Another thing i see is that if a check the status of the disk with the netxms agent's parameter on a perfectly working disk, the value returned from the agent is 0; but if i check the status of a raid5 array with 1 disk damaged, the  status returned in anyway 0! Which value means that the disk is damaged?

Thank you!