Check for connections through two fabrics to each target LUN — This host policy monitor
enables you to determine if there are redundant connections between the host group and the
target LUN.

To prevent a single point of failure, the host should have a redundant connection to the target
LUN. Available hosts include both automatic hosts and manual hosts. An automatic host is a
host discovered through Host adapter discovery or VM Manager discovery. A manual host is a
host enclosure manually created through host port mapping in the fabric topology.
Depending on how you discover the hosts, there are recommended configurations you should
complete to avoid inaccuracy:

Host adapter discovery (refer to

“Host discovery”

on page 59)

Make sure there are Brocade HBAs (with a 2.1 or later driver) on the host.

Fabric plus Host discovery (refer to

“Discovering fabrics”

on page 41)

Make sure there are Brocade HBAs on the host connected to the fabric.

Make sure to configure the host port mapping (refer to

“Host port mapping overview”

page 425).

Fabric plus VM Manager discovery (refer to

“Discovering fabrics”

on page 41)

Make sure there are Brocade HBAs (with a 2.1 or later driver) on the host connected to the
fabric.

VM Manager plus Host discovery (refer to

“VM Manager discovery”

on page 69)

Make sure there are Brocade HBAs (with a 2.1 or later driver) on the host.

Make sure you discover the associated fabrics.

Rule Violation Fix — If the policy monitor report shows a violation, the Administrator can add
redundant connections (either a host to attached fabrics or attached fabrics to a target LUN or
more inter-fabric routes) to establish a complete path from host to target LUN.