The DSMSupportedDeviceList key contains the hardware ID’s of all devices that are capable of being associated with the selected DSM.
To search for hardware ID’s registered with more than one DSM:
In order to determine which DSM’s a hardware ID are associated with, perform the following steps.
1. Using Regedit, open the following registry key:
HKLM\\System\\CurrentControlSet\\Control\\MPDEV\\MPIOSupportedDeviceList 2. The list of current hardware ID’s will be displayed such as the example from regedit.exe below:
3. Select one line from the Value Data filed, and Right-Click and choose copy.
Such as “Vendor 8Product 16”. 4. From the Edit menu in Regedit.exe, choose Find. 5. In the Find What box, right-click, and choose Paste.
6. Click the Find Next button. This will jump to the first DSM that this hardware ID is
associated with. Make a note of the registry path listed at the bottom of the Registry Editor window such as the path to the MSDSM entry listed below.
HKLM\\System\\CurrentControlSet\\Services\\msdsm\\Parameters
Highly Available Storage: Multipath Solutions in Windows Server 2008 and Windows Server 2003
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In order to check for registration with other DSM’s, repeat step 6 until the Registry Editor finishes searching the registry:
7. In order to disassociate the hardware ID with a DSM to prevent it from being claimed by a particular DSM, remove the hardware ID from only the entry under the DSM’s entry in the Services registry hive leaving only the hardware ID’s that you wish to have claimed by the DSM.
A reboot is required after this step for the changes to take effect.
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