J06.10 Software Installation and Upgrade Guide

Restoring the CLIMs assumes that you have saved the CLIM configurations by issuing the CLIMBKUP
command before upgrading your system, as described in “Back Up CLIM Configuration Files”
(page 40) and in the Cluster I/O Protocols (CIP) Configuration and Management Manual. Falling
back to previous versions of CLIM software adds approximately one hour for each CLIM to the
process of loading the system on the previous RVU.
NOTE: When you fall back, you must restore CLIM configuration files saved from the same RVU
as the NonStop system RVU to which you are falling back.
The procedure for falling back on the CLIM and loading the NonStop system on the previous RVU
is:
1. Before halting the processors:
a. Collect information about the CLIM environment.
b. Modify the OSSINFIL file.
2. Halt the processors.
3. While the processors are halted:
• Revert the server blade firmware, hard reset the system, and reimage the CLIMs.
• Prepare the CLIMs. Preparing the CLIMs involves configuring the interfaces that are used
for the dedicated service LAN and for the Maintenance Providers, configuring the Storage
CLIM for its role in the system, and configuring all the CLIMs with the system information
you gathered before halting the system.
4. Load the system.
5. Once the system is loaded, complete the CLIM setup. This step involves running a script that
establishes a secure relationship between the CLIMs and the system. In addition, you restore
more of the CLIM configurations by running a script that restores various aspects of the CLIM
configuration from the stored file.
6. Revert firmware if necessary.
7. Install specific OSS files if necessary.
8. Verify that the system is started.
Before Halting the Processors
(Optional) Prepare to Fall Back to Previous CLIM Firmware
If you will be falling back to previous CLIM firmware using the down system method, perform the
Prepare for Down System CLIM Firmware Update action in the OSM Service Connection. For more
information, see the Cluster I/O Protocols (CIP) Configuration and Management Manual.
Prepare to Fall Back to Previous CLIM Software
NOTE: If the system disk is a SAS disk, the SAS disk enclosures that contain the system disks
(both primary and mirror) must have LUNs assigned prior to a reimage and must not be power-cycled
during the reimage process.
Following are preparatory steps for downgrading to a previous version of the CLIM software.
1. Obtain the password for the root user ID on the CLIM.
2. Obtain a password for the super.super TACL user ID.
3. Obtain the DNS name of each CLIM iLO. The default name is system-climname-ILO, for example,
mysys-n1002583–ILO.
4. If you determined that reverting to the previous CLIM software is necessary, ensure you have
the CLIM software image for the RVU you are falling back to on either the NonStop system
console or a CLIM DVD. If you do not have the correct software image on a system console,
Before Halting the Processors 113