'hpsa' - A SCSI-based Linux device driver for HP Smart Array Controllers

14
Figure 6 illustrates the potential device name changes that may occur due to a controller replacement.
Figure 6. Controller replacement may change device names.
Pre-replacement tasks
Replacing a Smart Array controller requires a level of planning identical to the previously discussed case of activating
the hpsa driver, since replacement can force a driver transition. We recommend these steps:
1. Schedule downtime for replacing the controller.
2. Follow the instructions for the installation and replacement of controllers contained in the HP Smart Array
Controllers for HP ProLiant Servers User Guide.
3. Perform and verify a complete system backup.
4. Record physical and logical storage configuration and device mapping.
5. Identify the devices a driver transition would affect during the replacement. Verify that you are mounting the
affected devices using a persistent device naming method, either by-label, or by-uuid, and that the devices
are NOT required to boot the server.
6. Save copies of relevant OS configuration files for future reference.
7. For SLES 11 SP1 with Gen8 servers: obtain and install new hpsa version in a Bootable Driver Kit from SUSE.
5
Performing the replacement
1. Shut down the server.
2. Disconnect internal or external cables connecting to the old controller, noting the connection ports.
3. Remove the old Smart Array controller.
4. Install the new Smart Array controller, preferably in the same expansion slot.
5. Reconnect the internal and external cables to ports on the new controller that correspond to the connections for
the previous controller.
5
See link at end of paper.