HP P4000 9.0 HP StorageWorks P4000 Windows Solution Pack User Manual - Page 7

Using MPIO, Overview, Supported versions of Microsoft® Windows® Server - driver

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1 Using MPIO Overview You have the following options for setting up MPIO with the SAN/iQ software: • Using the HP StorageWorks P4000 DSM, which provides the following (see Using the HP P4000 DSM for MPIO, page 8): • Lower latency because of the direct path to each data page in a volume. • Better write performance. • Load always evenly distributed. • Recommended for clusters with three or more storage systems where select servers need the lower latency and additional throughput afforded by a session to every storage system. • Using the Microsoft DSM, which provides the following (see Using Microsoft DSM, page 12): • Comes with Microsoft MPIO. • Uses fewer iSCSI connections. • Supports mixed access to SAN/iQ volumes from both Windows servers and VMWare ESX servers. • Provides the basic needs of MPIO, I/O path high availability, and load balancing for most servers, without installing a custom driver. • With VMWare ESX, using the native ESX MPIO. For more information, see http:// h20195.www2.hp.com/V2/GetDocument.aspx?docname=4AA3-0261ENW. Supported versions of Microsoft® Windows® Server The SAN/iQ software with MPIO supports the following versions of Microsoft Windows Server. • Windows Server 2003 • Windows Server 2008 • Windows Server 2008 Server Core • Windows Server 2008 R2 • Windows Server 2008 R2 Server Core NOTE: To help avoid issues with active/passive MPIO configurations (both the P4000 DSM for MPIO and Microsoft DSM) and disk timeout errors when the iSCSI initiator detect a failure and reconnects, you may want to change the EnableNOPOut registry setting to 1 as described in the Microsoft iSCSI Initiator Driver Timers section of the Microsoft iSCSI Software Initiator Version 2.X Users Guide. P4000 Windows Solution Pack user guide 7

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1 Using MPIO
Overview
You have the following options for setting up MPIO with the SAN/iQ software:
•
Using the HP StorageWorks P4000 DSM, which provides the following (see
Using the HP P4000
DSM for MPIO
, page 8):
•
Lower latency because of the direct path to each data page in a volume.
•
Better write performance.
•
Load always evenly distributed.
•
Recommended for clusters with three or more storage systems where select servers need the
lower latency and additional throughput afforded by a session to every storage system.
•
Using the Microsoft DSM, which provides the following (see
Using Microsoft DSM
, page 12):
•
Comes with Microsoft MPIO.
•
Uses fewer iSCSI connections.
•
Supports mixed access to SAN/iQ volumes from both Windows servers and VMWare ESX
servers.
•
Provides the basic needs of MPIO, I/O path high availability, and load balancing for most
servers, without installing a custom driver.
•
With VMWare ESX, using the native ESX MPIO. For more information, see
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Supported versions of Microsoft® Windows® Server
The SAN/iQ software with MPIO supports the following versions of Microsoft Windows Server.
•
Windows Server 2003
•
Windows Server 2008
•
Windows Server 2008 Server Core
•
Windows Server 2008 R2
•
Windows Server 2008 R2 Server Core
NOTE:
To help avoid issues with active/passive MPIO configurations (both the P4000 DSM for MPIO and
Microsoft DSM) and disk timeout errors when the iSCSI initiator detect a failure and reconnects, you
may want to change the EnableNOPOut registry setting to 1 as described in the Microsoft iSCSI
Initiator Driver Timers section of the
Microsoft iSCSI Software Initiator Version 2.X Users Guide
.
P4000 Windows Solution Pack user guide
7