Installation guide

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EMC Fibre Channel and iSCSI with QLogic HBAs in the Windows Environment
Planning, Miscellaneous Procedures, and Troubleshooting
Extended Error Logging by QLogic Drivers
In driver versions prior to the 9.X family, additional messages were
logged in the system event log when the "extended error logging"
parameter was enabled in the HBA BIOS. The messages were
primarily informational, but often confused users by appearing to be
legitimate error messages.
Driver family 9.X and beyond will no longer log these additional
messages in the event log even if the “extended error logging”
parameter is enabled. New tools have been developed for developers
and engineers troubleshooting customer problems without the need
for these messages. Visit the website
http://www.qlogic.com/support/logs/event_log.asp for
information about QLogic event messages.