2
Server startup
The server OS startup is suspended until the ETERNUS AF startup is complete (*1).
3
Instruction from the power synchronized unit to turn on the ETERNUS AF
4
ETERNUS AF startup
*1:
The server must be set to suspend server OS startup until the ETERNUS AF startup is complete.
Powering off sequence
1
Shutdown of all the servers
2
Shutdown of all the server UPS units
3
Instruction from the power synchronized unit to turn off the ETERNUS AF
4
ETERNUS AF shutdown
•
When connecting three or more servers
Figure 78
Power Supply Control Using a Power Synchronized Unit (When Connecting Three or More
Servers)
ETERNUS AF
PWC
Power synchronized
unit#0
UPS unit for
Server#0
PWC
PWC
ETERNUS AF
PWC
Server#2
AC sensor
unit#1
Server#3
Server#0
UPS unit for
Server#1
Server#1
UPS unit for
Server#2
UPS unit for
Server#3
AC sensor
unit#0
Turns on: 1
Turns off: 2
Turns on: 2
Turns off: 1
4
4
3
Powering on sequence
1
Power on of all the server UPS units
3. Connection Configuration
Power Synchronized Connections
135
Design Guide
Summary of Contents for ETERNUS AF S3 Series
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