RAID Array 410 HSZ40 HSOF Software Version 3.7 for Compaq Tru64 UNIX Release Notes

RAID Array 410 HSZ40 HSOF Software Version 3.7 for Compaq Tru64 UNIX
Page 28 AA–RMBXA − TE
5.8.1.3 Upgrading HSOF Software
When upgrading HSOF software, you can refresh the configuration data on
your storagesets to include the new software revision by issuing the following
command:
SET UNIT XXX WRITE_PROTECT
SET UNIT XXX NOWRITE_PROTECT
[where xxx is any existing unit on the controller]
These commands change the contents of NVMEM, causing the updated
configuration information to be automatically written to the save configuration
area of all containers initialized with this option.
5.8.2 Dual-Redundant Controller Configurations
Subsystem configuration and code patch information is stored in the NVMEM
of both controllers of a dual-redundant configuration. If one of the two
controller modules in a dual-redundant configuration needs replacing, no
configuration information is lost because the other controller has it. There is no
need to use the CLI command: INITIALIZE container-name
SAVE_CONFIGURATION, in fact, its use is discouraged.
The method of saving the configuration in dual-redundant controller
configurations is by using the CLI command: SET FAILOVER
COPY=controller (refer to HSZ40 Array Controller HSOF V3.1 CLI Reference
Manual for additional information). The act of placing the two controllers into
failover mode with this command ensures that the configuration in the primary
controller (the one that had the configuration placed in it) is copied to the
companion controller in the dual-redundant pair.
NOTE
Ensure you know which controller has the good configuration
information before entering this command. The device configuration
from the controller specified in the CLI command: SET FAILOVER
COPY=controller overwrites the information on the companion
controller.