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Chapter 3 Connections
3.4 Power Supply Connection
ETERNUS DX80 S2/DX90 S2 Disk storage system User’s Guide -Site Planning-
Copyright 2013 FUJITSU LIMITED P3AM-4822-12ENZ0
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3.4.1 Input Power Supply Lines
Multiple power supply facilities in the building or UPS units are recommended for power supply redundancy.
When the ETERNUS DX Disk storage system power supply is redundantly configured, business can continue
even if one of the power lines fails.
Alternatively, optimal system design (including the server) may instead lead to the ETERNUS DX Disk storage
system being configured with only a single power supply facility or UPS unit. Which configuration is selected
will depend on system availability requirement considerations.
Figure 3.13 Dual-line power supply when connecting to power sockets
Figure 3.14 Dual-line power supply when connecting to UPS units
Figure 3.15 Single-line power supply when connecting to power sockets
Power distribution unit
ETERNUS DX
Disk storage system
Power supply
facility
Line 0
Line 1
PSU
PSU
Power supply
facility
UPS
Power distribution unit
ETERNUS DX
Disk storage system
Line 1
UPS
Line 0
PSU
PSU
Power distribution unit
ETERNUS DX
Disk storage system
PSU
PSU
Power supply
facility
Line 0