Dell PS4000 Configuration Manual page 39

EqualLogic MPIO Requirements
The following host port requirements must be met to use MPIO with EqualLogic SANs:

At least two (2) Ethernet ports are required on each host.

The host operating system must have a supported MPIO driver or service available.

The ports used for MPIO cannot be ―teamed‖ to other ports.

The ports must be the same speed

The ports must be assigned IP addresses on the same subnet
EqualLogic MPIO General Recommendations
Follow this general set of guidelines for configuring MPIO on a host:

Configure volume access controls to use standard iSCSI IQN names (See Section 3.3.1 for
details). For a more secure configuration you can use the IQN name plus the CHAP security ID.

On each array enable at least two(2) ports for host connectivity.

Install the Dell provided MPIO extension features if available for the host operating system.

For Microsoft Windows, install the Device Specific Module (DSM) found in the Host Integration
Toolkit for Windows.

For VMware vSphere 4.1, install the EqualLogic Multipathing Extension Module.

For other operating systems, use the native MPIO functionality.
Configuring Microsoft Windows MPIO
Configure Microsoft Windows MPIO with the following initial configuration settings. Customized settings
may be required depending on the supported application(s).

Change the ―Subnets included‖ field to include ONLY the subnet(s) dedicated to the SAN
network infrastructure.

Change the ―Subnets excluded‖ field to include all other subnets.

The ―Load balancing policy‖ should remain set to the default value of ―Least queue depth‖.

―Max Sessions per volume slice‖ should be set to the number of network ports dedicated to SAN
subnet (maximum of 4).

―Max sessions per entire volume‖ should be set to three (3) times the value of ―Max sessions
per volume slice‖ (maximum of 12).

―Use MPIO for snapshots‖ should remain at the default setting.

―Use IPv6 or IPv4‖ should be set to IPv4 unless your network is configured to use IPv6 as the
default communications protocol.
Configuring VMware vSphere 4.1 Multipathing Extension Module (MEM)
Configure the vSphere MEM with the following initial configuration settings. Customized settings may
be required depending on the supported application(s).

Change the ―Subnets included‖ field to include ONLY the subnet(s) dedicated to the SAN
network infrastructure.

―membersessions‖ should be set to the number of network ports dedicated to SAN subnet
(maximum of 4).

―volumesessions‖ should be left at the default value of 6.

―totalsessions‖ should be left at the default value of 512.
Dell EqualLogic Configuration Guide v11.3 34