HP EVA P6000 Storage User Manual
Page 100
Microsoft MPIO support allows the initiator to log in to multiple sessions to the same target and
aggregate the duplicate devices into a single device exposed to Windows. Each session to the
target can be established using different NICs, network infrastructure, and target ports. If one
session fails, another session can continue processing I/O without interruption to the application.
The iSCSI target must support multiple sessions to the same target. The Microsoft iSCSI MPIO DSM
supports a set of load balance policies that determine how I/O is allocated among the different
sessions. With Microsoft MPIO, the load balance policies apply to each LUN individually.
The Microsoft iSCSI DSM v2.x assumes that all targets are active/active and can handle I/O on
any path at any time. There is no mechanism within the iSCSI protocol to determine whether a
target is active/active or active/passive; therefore, the iSCSI or iSCSI/FCoE modules support only
multipath configurations with the EVA with active/active support. More information can be found
at:
details the differences between Windows Server 2008 and Windows Server
2003.
Table 20 Windows server differences
Windows Server 2003
Windows Server 2008 and 2012
Separate installation
Included with operating system
iSCSI Initiator
Included with iSCSI initiator
Feature has to be installed
MPIO
shows the supported MPIO options for the iSCSI or iSCSI/FCoE controller.
Table 21 Supported MPIO options for iSCSI or iSCSI/FCoE modules
Windows Server 2003
Windows Server 2008 and 2012
Supported
Supported
HP MPIO Full Featured
DSM for EVA*
Supported
Supported
Microsoft generic DSM
*Preferred
Installing the MPIO feature for Windows Server 2012
NOTE:
Microsoft Windows 2012 includes a separate MIOP feature that requires installation for
use. Microsoft Windows Server 2012 also includes the iSCSI Initiator. Download or installation is
not required.
Installing the MPIO feature for Windows Server 2012:
100 iSCSI or iSCSI/FCoE configuration rules and guidelines