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Chapter 3 Connections
3.5 Power Synchronized Connections
ETERNUS DX80 S2/DX90 S2 Disk storage system User’s Guide -Site Planning-
Copyright 2013 FUJITSU LIMITED P3AM-4822-12ENZ0
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● Powering off sequence
1 Shutdown of all the servers
2 Shutdown of all the server UPS units
3 Issuance of command to turn off the ETERNUS DX Disk storage system from the power synchronized
unit
4 ETERNUS DX Disk storage system shutdown
• When connecting three or more servers
Figure 3.19 Power control using a power synchronized unit (when connecting three or more servers)
ETERNUS DX
Disk storage system
PWC
Power synchronized
unit#0
PWC
PWC
ETERNUS DX
Disk storage system
PWC
Server#2
AC sensor
unit#1
Server#3
Server#0
Server#1
UPS unit for
Server#2
AC sensor
unit#0
Turns on: 1
Turns off: 2
4
4
UPS unit for
Server#3
UPS unit for
Server#1
UPS unit for
Server#0
Turns on: 2
Turns off: 1
3