LAWO mc256 MKII, Техническое руководство

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mc²56 MKII Technical Manual V5.10.2/1 262
Chapter 4: Service/Maintenance
Nova73
Updating Configuration and Software in a Redundant System
For redundancy to work, both main and redundant control systems must hold identical information and mirror
each other.
User data (productions and warm start data) is mirrored at all times. However, the cold start configuration and
system software are only synchronised when the control system boots up. This has implications if you wish to
upload a new AdminHD configuration or update system software.
Let’s take an example where your main control system is called A and the redundant control system is called B.
If you upload your new configuration or software to control system A and then perform a
cold start , the following
will occur:
·
The system responds to the cold start of the main control system (A) by automatically switching to the
redundant control system (B).
·
At the end of the cold start, data from the active control system (B) is copied back to the redundant
control system (A). In other words, your new data is overwritten!
To avoid this, and upload a new configuration or update software successfully:
1. Disable the redundant control system.
This can be achieved by releasing the locking catches, fitted to the top and bottom of the redundant Router
Module (in
STANDBY ):
This unlocks the module from the Nova73 and automatically disables it; the module's LEDs should be off. Note
that it is not necessary to pull out or remove the module.
2. Now upload your new AdminHD configuration, or upload the new software, and cold start - the system
restarts using the new configuration files or software.
3. Once the control system is running ( ACTIVE LED flashing), lock the redundant Router Module back into
place to reactivate it - the redundant Router Module boots up, and all data from the main control system is
copied across.
4. Cold start the system once more to confirm that step 3 was successful.