HP 3PAR Windows 2012 and Windows Server 2008 Implementation Guide

Figure 1 Adding MPIO Support for HP 3PAR Devices
7. Reboot as directed.
NOTE: You can also use MPIO-cli to add 3PARdataVV. The command is:
"mpclaim -r -I -d "3PARdataVV"
Configuring MPIO for Round Robin
A Windows Server 2008 server connected to an HP 3PAR StoreServ Storage running HP 3PAR
OS 2.2.x or later requires that the multipath policy be set to Round Robin.
Windows Server 2012, Windows Server 2012 R2, or Windows Server 2008 R2 servers do not
need to change the multipath policy, as it defaults to Round Robin.
If the server is running any supported Windows Server 2008 version prior to Windows Server
2008 R2, and if the Windows Server 2008 server is connected to an HP 3PAR StoreServ Storage
array that is running HP 3PAR OS 2.2.x, the multipath policy will default to failover and must be
changed to Round Robin. However, if the OS version on the HP 3PAR StoreServ Storage array is
HP 3PAR OS 2.3.x or later, then you must use HP 3PAR OS host persona 1 for Windows Server
2008 R2 or host personal 2 for Windows Server 2008 non-R2 so that the multipath policy defaults
to Round Robin. For recommended host persona, see “Configuring the HP 3PAR StoreServ Storage
Port Personas and Ports (HP 3PAR OS 2.2.x)” (page 14).
To verify the default MPIO policy, follow these steps:
1. In the Server Manager, click Diagnostics; select Device Manager. Expand the Disk drives list.
2. Right-click an HP 3PAR drive to display its Properties window and select the MPIO tab. Select
Round Robin from the drop-down menu. See “Specifying MPIO Policy ” (page 19).
18 Performing Preliminary HP 3PAR StoreServ Storage and Host Configuration