8x00 family of Disk Arrays 3.00.00 Installation and Reference Guide (AA-RW7SJ-TE, March 2008)

1. If MSCS is installed on your system, move all cluster resources owned by the current node to another

node in the cluster. If this is not applicable, proceed to step 2.

2. Navigate to the HP MPIO EVA DSM installation directory <installdir> on the current node

using Windows Explorer.

3. Double-click the registry ﬁle (depending upon the operating system you are using):

•ForWindowsServer2003(32-bit):

<installdir>\x86\hpeaadsm_pr_on.reg

• For Windows Server 2003 (IA64):

<installdir>\IA64\hpeaadsm_pr_on.reg

• For Windows Server 2003 x64 Edition:

<installdir>\AMD64\hpeaadsm_pr_on.reg

NOTE:

The <installdir> referstothefolderwhichyouhaveselectedduring

theHPMPIOEVADSMinstallation. Thedefaultinstallationdirectoryis

%ProgramFiles%\Hewlett-Packard\HP MPIO DSM\EVA DSM.InWindows

Server 2008 Cluster, the load balancing for the cluster devi ces is turned on by default.

4. Follow the on-screen instructions.

5. Reboot the system for the new registry parameter to take effect.

NOTE:

Once all the nodes in the cluster have the support for load balancing in MSCS enabled, you can change

the load-balancing policy for the cluster device(s) using the HPDSM CLI or HP MPIO DSM manager.

Disabling support for load balancing in MSCS environments

To disable the load balancing support in MSCS environments in HP MPIO EVA DSM, complete the

following steps:

NOTE:

You must repeat the following procedure on all nodes in the cluster, one at a time.

1. If MSCS is installed on your system, move all cluster resources owned by the current node to another

node in the cluster. If this is not applicable, proceed to step 2.

2. Navigate to the HP MPIO EVA DSM installation directory <installdir> on the current node,

using Windows Explorer.

3. Double-click the registry ﬁle (depending upon the operating system you are using):

•ForWindowsServer2003(32-bit):

<installdir>\x86\hpeaadsm_pr_off.reg

• For Windows Server 2003 (IA64):

<installdir>\IA64\hpeaadsm_pr_off.reg

• For Windows Server 2003 x64 Edition:

<installdir>\AMD64\hpeaadsm_pr_off.reg

Support for load balancing in Microsoft Cluster Server e nvironment for Windows Server 2003