HP EVA P6000 User Manual

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:
http://www.microsoft.com/WindowsServer2003/technologies/storage/mpio/default.mspx
http://www.microsoft.com/WindowsServer2003/technologies/storage/mpio/faq.mspx
http://download.microsoft.com/download/3/0/4/304083f1-11e7-44d9-92b9-2f3cdbf01048/
mpio.doc
Table 16 (page 89) details the differences between Windows Server 2008 and Windows Server
2003.
Table 16 Windows server differences
Windows Server 2003Windows Server 2008
Separate installationIncluded with operating systemiSCSI Initiator
Included with iSCSI initiatorFeature has to be installedMPIO
Table 17 (page 89) shows the supported MPIO options for the iSCSI or iSCSI/FCoE controller.
Table 17 Supported MPIO options for iSCSI or iSCSI/FCoE modules
Windows Server 2003Windows Server 2008
SupportedSupportedHP MPIO Full Featured
DSM for EVA*
SupportedSupportedMicrosoft generic DSM
*Preferred
Installing the MPIO feature for Windows Server 2008
NOTE: Microsoft Windows 2008 includes a separate MPIO feature that requires installation for
use. Microsoft Windows Server 2008 also includes the iSCSI Initiator. Download or installation is
not required.
Installing the MPIO feature for Windows Server 2008:
Set up the iSCSI Initiator 89

HP EVA P6000 Specifications

General

Model	HP EVA P6000
Number of Storage Controllers	2
Management Software	HP Command View EVA
Drive Types	SAS, SSD
RAID Levels	RAID 0, 1, 5, 6
Connectivity	8 Gb Fibre Channel, 10 Gb iSCSI, 1 Gb iSCSI
Form Factor	Rack-mounted
Storage Controller Type	Dual controllers