Setup and Install

4 Installing the operating system
Emulex, QLogic, and Brocade HBAs
NOTE: Although the procedures in this chapter refer to HBAs, they also apply to all supported
Emulex and QLogic adapter HBA, CNA, LOM, and mezzanine card types.
Linux
Verify that there are multiple paths to the LUNS before installing a Linux operating system.
Red Hat Enterprise Linux
1. Start the installation of the operating system.
2. Provide the parameter linux mpath to the kernel boot line.
NOTE: While creating partitions during the installation process, you will see multipath devices
(/dev/mapper/mpath*). Create the installation partitions using multipath devices. Multipathing
features are enabled for all the operating system partitions created on multipath devices during
installation.
3. View the Base System package list and ensure that the device-mapper-multipath package
is selected.
4. Complete the installation and boot the server.
SUSE Linux Enterprise Server
1. Select the device for installing the operating system:
• For SLES 11:
1. Select the DM devices to create installation partitions.
By default, DM devices are not listed. To list the DM devices, select Hard Disks.
2. Select Configure→Configure Multipath→Yes→Yes.
3. Select the DM devices to create installation partitions.
• For SLES 10, select SAN devices for installation partitions.
2. While creating the installation partitions, select one of the fstab options under Mount in
/etc/fstab by:
• If you intend to use the user_friendly_names with device mapper multipath devices, select
Volume label.
• If you do not intend to use the user_friendly_names with device mapper multipath devices,
select Device ID.
3. Complete the installation and reboot your server.
4. Verify that the latest supported Device mapper multipath tools package is installed.
5. If you mounted the installation partitions by Device ID in Step 2, ensure that you set the
user_friendly_names to no in the /etc/multipath.conf file.
Windows
Installing from the Microsoft CD
Use the following procedures to install the operating system using the Microsoft CD.
12 Installing the operating system