Multipathing support for hosts that run the Windows Server operating system

Hosts that run the Microsoft Windows Server operating system require multipathing software.

The following website provides current interoperability information:

IBM System Storage Interoperation Center (SSIC)

There are two multipathing options for Windows Server operating systems:
  • Microsoft Device Specific Module (MSDSM), which is the recommended multipathing driver. It is included in the Windows Server operating system.
  • Subsystem Device Driver Device Specific Module (SDDDSM), which is the legacy IBM multipathing driver for older Windows Server operating systems.

The Microsoft Multipath I/O (MPIO) feature must also be enabled when using either MSDSM or SDDDSM.