Compaq HSZ80 manual Save Configuration, Considerations for Saving the Configuration

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Save Configuration

Indicate whether to save the subsystem’s configuration on the storage unit when you initialize it:

■NOSAVE_CONFIGURATION (default) means that the controller stores the subsystem’s configuration in its nonvolatile memory only. Although this is generally secure for single-controller configuration configurations, the configuration could be jeopardized if the controller fails. For this reason, you may initialize at least one of your storage units with the SAVE_CONFIGURATION switch enabled.

■SAVE_CONFIGURATION allows the controller to use 256K of each device in a storage unit to save the subsystem’s configuration. The controller saves the configuration every time you change it or add a patch to your controller. If the controller should fail, you can recover your latest configuration from the storage unit rather than rebuild it from scratch.

The save configuration option saves all configuration information normally saved when you restart your controller except the controller serial number, product ID number, vendor ID number, and any manufacturing fault information.

Considerations for Saving the Configuration

■Use the SET FAILOVER COPY command to restore configuration information in a replacement controller. See “Saving Configuration Information in Dual- Redundant Controller Configurations,” page 3–56for details.

■Do not remove and replace disk devices between the time you save and restore your configuration. This is particularly important for devices that you migrate from another system. The controller could recover and use the wrong configuration information on your subsystem.

■Save your subsystem configuration as soon as possible after removing and replacing any disk devices in your subsystem. This ensures that the devices always contain the latest, valid information for your system.

Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide