Eaton Electrical 34003991EN/EB Shutdown management with 2 NMC boards, Shutdown Duration, Settings

5.3Shutdown management with 2 NMC boards

Certain UPS can have 2 NMC boards in order to:

◗Increase the number of protected servers,

◗Protect 2 groups of server connected to different networks physically separated.

5.3.1 Shutdown Duration

As described in the 5.1.1.4 paragraph, The protection application transmit their own "Shutdown duration" to the Network Management Card. Based on these values (maximum Shutdown duration of all subscribed customer systems) that the card will send to the delayed shutdown order to the UPS.

If the UPS have two NMC cards, the maximum shutdown duration of the two groups of protected systems will be used for the delayed shutdown order.

Example: If the subscribed customers of the first NMC card have a maximum Shutdown duration of 60s and the ones of the second NMC card of 120s, the servers shutdown will be launched 120s before the UPS shutoff..

5.3.2 Settings

Set-up shutdown parameters to the same values on the 2 cards is highly recommended (for the main output and the controlled outlets).

If the settings are not the same, the first criteria reached on one the 2 cards will launch the secure shutdown of all servers

Please, note that in any case the shutdown of the protected servers will be executed safely.

Network Management Card – User Manual 34003991EN/EB Page 71/118