What settings are configured for my storage array automatically by device-mapper-multipath in RHEL?

Solution Unverified - Updated -

Issue

  • How can I check what settings will be automatically be used for my storage array by device-mapper-multipath?
  • Do I need to add a device {} stanza for my hardware to /etc/multipath.conf?
  • What are the default settings for my SAN within multipath.conf?
  • Usage of alias in multipath.conf overrides all entries in bindings file, devices section and default section?

Environment

  • Red Hat Enterprise Linux (RHEL) 4, 5, 6
  • device-mapper-multipath

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