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Installing multipath and failover software – EMC QLogic User Manual

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Configuring a CLARiiON Boot Device

3-29

Configuring an EMC Boot Device

What Next?

From here:

If you need to install multipath and failover software, refer to
Installing Multipath and Failover Software.

If you need to start the installation again, refer to Starting a Fresh
Installation
.

Otherwise, installation and setup are complete.

Assigning a Permanent Boot Drive Letter for Windows NT

If you have installed failover software into a Windows NT 4.0 server,
it is good practice to hard-code the boot volume letter so that it does
not change when rebooting after a LUN trespass. This can be done by
using the following procedure (from MSKB Q153619):

1. Reassign all drive letters (including C: and the CD-ROM drive) to

higher available letters. (You must do this or C: will be taken once
it becomes available. After reassigning C:, you should receive a
message requiring you to reboot for the new assignment to take
effect.

2. Reboot the server.

On system restart you may receive virtual memory errors; this is normal.

3. Rename all drives to their original letters.

4. Reboot and make an ERD of the new configuration.

Installing Multipath and Failover Software

Multipath and failover software on the host can transfer control of
storage system LUNs on a hardware failure in a LUN path.

Important:

If the Navisphere Host Agent is installed, you must

remove it before installing multipath and failover software. (Refer to
the documentation that came with your failover software.) Reinstall
the host agent after installing the multipath and failover software.

Follow these steps to set up the multipath and failover software:

1. Install the software as described in the your EMC ControlCenter

Navisphere Management software, ATF, or PowerPath
documentation.

QLogic_Windows.book Page 29 Thursday, March 10, 2005 10:31 AM