Ensure that your host has an HBA (host bus adapter) port for each path to the SAN switch.

Check that your host has one SCSI or fiber cable per host bus adapter port.

For iSCSI, assign each host bus adapter port a unique SCSI ID.

Connect only one path to shorten installation time.

Ensure that the Windows Storport driver is installed.

Install the correct hardware drivers for the DMP DSMs.

Refer to your hardware documentation for detailed information about hardware drivers.

Enable the Microsoft Multipath I/O (MPIO) feature using the Server Manager to view the multi-path under SFW or SFW HA. The MPIO server feature must be enabled before installing DMP DSMs.

Ensure that no other third-party DSMs are installed for the same array you want to use.

A DMP DSM cannot be installed together with a third-party DSM for the same array. Only one DSM at a time can claim the LUNs in an array. According to Microsoft Multipath I/O (MPIO) documentation, if multiple DSMs are installed, the Microsoft MPIO framework contacts each DSM to determine which is appropriate to handle a device. There is no particular order in which the MPIO framework contacts the DSMs. The first DSM to claim ownership of the device is associated with that device. Other DSMs cannot claim an already claimed device. Therefore, to ensure that the DMP DSM claims the LUNs of an array, no other DSM should be installed for that same array.