Removing And Replacing A Controller Or Expansion Module; Saving Configuration Settings - R/Evolution 2000 Series Troubleshooting Manual

Removing and Replacing a Controller or Expansion
Module
In a dual-controller configuration, controller and expansion modules are hot-
swappable, which means you can replace one module without halting I/O to the
storage system or powering it off. In this case, the second module takes over
operation of the storage system until you install the new module.
In a single-controller configuration, I/O to the storage system must be halted and the
storage system must be powered off.
A controller or expansion module might need replacing when:
The Fault/Service Required LED is illuminated
■
Events in RAIDar indicate a problem with the module
■
Troubleshooting indicates a problem with the module
■
The internal clock battery fails
■
Caution –
cache size. If the new controller has a different cache size, controller A will boot
and controller B will not boot. To view the cache size, select Monitor > Advanced
Settings > Controller Versions.

Saving Configuration Settings

Before replacing a controller module, save the storage system's configuration
settings to file. This enables you to make a backup of your settings in case a
subsequent configuration change causes a problem, or if you want to apply one
system's settings to another system.
The file contains all system configuration data, including:
LAN configuration settings
■
Host port configuration settings
■
Enclosure management settings
■
Disk configuration settings
■
Services security settings
■
System information settings
■
System preference settings
■
Event notification settings
■
82 R/Evolution 2000 Series Troubleshooting Guide • May 2008
In a dual-controller configuration, both controllers must have the same