Figure 98 Power Supply Control Using A Power Synchronized Unit (When Connecting Three Or More Servers) - Fujitsu ETERNUS AF250 Design Manual

2. Connection Configuration
Power Synchronized Connections
When connecting three or more servers
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Figure 98 Power Supply Control Using a Power Synchronized Unit (When Connecting Three or More Servers)

Turns on: 1
Turns off: 2
UPS unit for
Server#1
UPS unit for
Server#0
Powering on sequence
1
Power on of all the server UPS units
2
Server startup
The server OS startup is suspended until the ETERNUS AF startup is complete (*1).
3
Issuance of command to turn on the ETERNUS AF from the power synchronized unit
4
ETERNUS AF startup
*1: The server must be set to suspend server OS startup until the ETERNUS AF startup is complete.
Turns on: 2
Turns off: 1
Server#1
Server#0
Power synchronized
unit#0
PWC PWC
3
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Server#3
AC sensor
unit#1
Server#2
AC sensor
unit#0
ETERNUS AF
4
PWC
ETERNUS AF
4
PWC
147
UPS unit for
Server#3
UPS unit for
Server#2
P3AG-1822-09ENZ0