Microsoft Dsm With Two Nics In The Server And Round Robin Mpio Load Balancing - HP StorageWorks P4000 User Manual

Figure 12 Microsoft DSM with two NICs in the server and Round Robin MPIO load balancing
.
NOTE:
Be sure to follow the steps below to set the MPIO load balancing policy. Similar options are available
for Multiple Connected Session (Windows 2008) or Session Connections (Windows 2003). These
session load balancing policies will have no effect.
To set the MPIO load balancing policy:
1. Select the target you just logged on to and click Details.
2. Select the Devices tab.
3. Click Advanced.
This step is not needed for Windows 2008 Server R2.
4. Click the MPIO button or tab.
If the MPIO button or tab is not available, MPIO is not installed and enabled. See
P4000 DSM for MPIO" on page 10 or
5. From the Load balancing policy drop-down list, select either Fail Over Only or Round Robin.
In the P4000 DSM for MPIO by default, Vendor Specific is selected. This option is the same as
selecting Fail Over Only and will not be available after you select another option. In the Microsoft
DSM by default, Fail Over Only is select for all Windows versions, except for Windows 2008
R2, Round Robin is the default.
CAUTION:
Only the Fail Over Only and Round Robin options are supported. For the Microsoft DSM
with Windows 2003 Server, only the Fail Over Only option is supported.
Use one of the following supported options:
• Fail Over Only Also called active/passive MPIO. Two (or more) I/O paths are built between
the server and the storage. One path is actively used for I/O to the storage. The other paths
are available for failover only in the event the primary path goes down.
• Round Robin Also called active/active MPIO. Two (or more) I/O paths are built between
the server and the storage. All paths are actively used for I/O to the storage.
"Using Microsoft DSM" on page 12.
P4000 Windows Solution Pack user guide
"Installing the
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