Hi, I am trying to write this function (in python using wmi module) that queries the disks for their availability (online, offline, etc.) on windows initiators (form windows client), I always get ‘None’ as an answer and I can’t find anything useful in Google. I am using python WMI module and I got the Win32 class and the attribute from msdn. def query_disks(self): c = wmi.WMI(self.ip, user=self.username, password=self.password) vols = c.Win32_DiskDrive(['Availability']) for vol in vols: print vol.Availability return vols I am able to get other attributes, and when I try to read vol.blabla I get an exception. I noticed that it also happens when I run vb script querying the same attributes (not a python issue) thanks, Ofer Helman