Win32_DiskDrive Signature property

Question

Does anybody know what is the Signature property of the Win32_DiskDrive WMI class? Is it unique or users can change it like disk volume serial number?

Thanks.

Answer 1

The "Signature" property was introduced with Windows XP and is used for disks that are used as shared cluster disks. In my understanding it is created the first time the disk is connected to a windows system and will not be changed even if the disk is connected via another controller (or in a cluster scenario even via another computer).

For a detailed explanation see MSDN: Creating Physical Disk Resources http://msdn.microsoft.com/en-us/library/aa369328(VS.85).aspx