Power Synchronized Connections; Power Synchronized Connections (Pwc); Figure 97 Power Supply Control Using A Power Synchronized Unit (When Connecting One Or Two Servers) - Fujitsu ETERNUS AF250 Design Manual

2. Connection Configuration

Power Synchronized Connections

Power Synchronized Connections
This section describes the connections to automatically control powering the ETERNUS AF on and off with a serv-
er.
In order to control powering the ETERNUS AF on and off with servers, the power control of the ETERNUS AF must
be linked with all of the connected servers.

Power Synchronized Connections (PWC)

■
Power Synchronized Unit
A power synchronized unit enables the ETERNUS AF to be powered on and off with a server. The power synchron-
ized unit detects changes in the AC power output of a UPS unit that is connected to a server (server UPS unit)
and automatically turns on and off the ETERNUS AF. In addition to server UPS units, units that control the AC
socket power output can also be connected. When three or more servers are connected, power can be synchron-
ized by adding an AC sensor unit.
●
Power Synchronization via a Server UPS Connection
The power synchronized unit detects the AC power output of the target devices for power synchronization and
commands the ETERNUS 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 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 AF to turn off.
The server UPS unit must have a function in the management software that controls the AC power output ac-
cording to when the server powers on and off. The server UPS unit must have one unused outlet to connect to
the power synchronized unit.
When connecting one or two servers
•

Figure 97 Power Supply Control Using a Power Synchronized Unit (When Connecting One or Two Servers)

Turns on: 1
Turns off: 2
UPS
UPS setting
Turns on: 2
Turns off: 1
Server
UPS
management
software
Power synchronized unit
PWC
RS232C cable
An instruction is
issued to turn
on/off the ETERNUS
AF when AC
output/no AC
output is detected.
FUJITSU Storage ETERNUS AF250 S2, ETERNUS AF250 All-Flash Arrays Design Guide (Basic)
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PWC
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