Release Notes

Building a high-availability SAN
44 Dell PS Series Configuration Guide
9.1.1 PS Series MPIO requirements
The following host port requirements must be met to use MPIO with PS Series SANs:
• At least two Ethernet ports are required on each host. While not required, it is preferable that these
ports be on different physical adapters to ensure a highly available SAN solution.
• 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
9.1.2 PS Series 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
• For a more secure configuration you can use the IQN name plus the CHAP security ID.
• On each array enable at least two ports for host connectivity.
• Install the Dell EMC 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 ESXi, install the Dell PS Series Multipathing Extension Module.
• For Linux (supported versions), use the MPIO functionality provided by the Host Integration Toolkit for
Linux.
• For other operating systems, use the native MPIO functionality.
9.2 Redundant SAN configuration
In a redundant iSCSI SAN, each component of the SAN infrastructure has a redundant connection or path.
The following figures show example connection paths necessary to create a Redundant SAN.
Redundant SAN Connection Paths: PS3000 to PS6500 Family Arrays