Product manual

Galaxy G3G12 / G3G16 - Installation and Hardware Reference Manual
149 Section 5 Management with CLU
5.3 Managing the Subsystem
Subsystem Management includes the following functions:
• Setting an Alias for the Subsystem
• Setting Redundancy for the Subsystem
• Setting the Cache Mirroring for the Subsystem
• Running Media Patrol
• Locking or Unlocking the Subsystem
• Setting Subsystem Date and Time
Setting an Alias for the Subsystem
An alias is optional. To set an Alias for this subsystem:
1. From the Main Menu, highlight Subsystem Management and press Enter.
• Type an alias name into the Alias field.
Maximum of 48 characters. Use letters, numbers, space between words and underscore.
2. Press Ctrl-A to save your settings.
Setting Redundancy for the Subsystem
This feature applies to Fibre Channel models with dual controllers.
To set redundancy:
1. From the Main Menu, highlight Subsystem Management and press Enter.
2. Highlight Redundancy Type and press the spacebar to toggle between Active-Active and Active-
Standby.
• Active-Active – Both RAID controllers are active and can share the load
• Active-Standby – One RAID controller is in standby mode and goes active if the other fails
3. Press Ctrl-A to save your settings.
This option applies only to subsystems with two controllers. To use Cache Mirroring, the Redundancy Type
must be set to Active-Active.
Setting Cache Mirroring for the Subsystem
To change Cache Mirroring for this subsystem:
1. From the Main Menu, highlight Subsystem Management and press Enter.
2. Highlight Redundancy Type and press the spacebar to toggle between Active-Active and Active-
Standby.
3. Highlight Cache Mirroring and press the spacebar to toggle between Enabled and Disabled.
4. Press Ctrl-A to save your settings.
5. Restart the subsystem.
See “Restarting the Subsystem”
Notes
• If you disable Cache Mirroring, LUN Affinity will be enabled
automatically.
• If you change Cache Mirroring, be sure both controllers are
properly installed in the subsystem before you restart.