Chapter 1 Overview
1.6 Power Management for Power Synchronization
FUJITSU Storage ETERNUS DX, ETERNUS AF Configuration Guide (Power Synchronized Unit)
Copyright 2017 FUJITSU LIMITED P3AM-8012-10ENZ0
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1.6 Power Management for Power Synchronization
This section explains power management with a power synchronized unit.
The power synchronized unit detects the AC power output of the target devices for power synchronization and
commands the ETERNUS DX/AF to synchronize the power with the target devices.
When the power synchronized unit detects the AC power output of any server UPS unit, the power
synchronized unit commands the ETERNUS DX/AF to turn on.
When the power synchronized unit does not detect AC power output in any of the server UPS units, the power
synchronized unit commands the ETERNUS DX/AF to turn off.
The server UPS unit must have a function in the management software that controls the AC power output
according to when the server powers on and off. The server UPS unit must have one unused outlet to connect
to the power synchronized unit.
Connect the power cords of the ETERNUS DX/AF and the power synchronized unit to a UPS (UPS for the
ETERNUS DX/AF) that uses a power line that is not the same as the server UPS unit. This enables power to be
supplied or stopped according to the scheduled operations and the power failure settings of the server.
■ Powering on sequence for turning on power or power recovery
Figure 1.7 Power on using a power synchronized unit
1 Power on of an ETERNUS DX/AF UPS unit
2 Issuance of command to turn on the server (power on of the server UPS units)
3 Server startup (OS startup is suspended)
The server OS startup is suspended until the ETERNUS DX/AF startup is complete. For the set suspend
time of the server, refer to "Figure 1.8
Operation timing chart when using a power synchronized unit
(powering on)" (page 30).
ETERNUS DX/AF
PWC
Power synchronized unit
PWC
UPS unit for
Server#0
Server#0
UPS unit for
Server#1
4
5
3, 6
3, 6
2
2
UPS management
software
Server#1
UPS management
software
ETERNUS DX/AF
UPS unit
UPS settingUPS setting
RS232C cable
An instruction is
issued to turn on the
ETERNUS DX/AF
when AC output is
detected.
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