APC Network Management Card AP9617 Guía de usuario descargar pdf (Pagina 90)

®®

USER’S GUIDE

network management card

The synchronization process . If you apply an action to the

Synchronization Control Group, the UPSs with management cards that are

enabled group members behave as follows:

• Each UPS receives the command regardless of its output status, even

if it is in a low-battery state.

• The action uses the delay periods (such as Shutdown Delay, Sleep

Time, and Return Delay) that are configured for the initiating UPS.

• When the action begins, a UPS that is unable to participate retains its

present output status while the other UPSs in the group perform the

action. If a UPS is already in the output state that the action requires

(e.g., a UPS is already off when the Reboot UPS action starts), that

UPS logs an event, but performs the rest of the action, if any.

• All UPSs participating in the action synchronize their performance of

the action (within a one-second time period under ideal conditions for

Smart-UPS, but sometimes longer, especially for Symmetra UPSs).

• In reboot and sleep actions:

– Immediately before the initiating UPS begins its Return Delay, by

default it waits up to 120 seconds (its configurable Power

Synchronized Delay) for any UPS that does not have input

power to regain that power. Any UPS that fails to regain input

power within the Power Synchronized Delay does not participate

in the synchronized restart, but instead waits until its own input

power returns before restarting.

– The LEDs on the front of the UPS do not sequence their lights as

they do for a normal (not synchronized) reboot or sleep action.

• UPS status and events are reported in the same way for synchronized

actions as for actions on individual UPSs.

For more information about the delays and required battery capacity

settings in the following table see Configuration and Sync Control.

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APC Network Management Card AP9617 Guía de usuario Pagina 90