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Chapter 3 Connections
3.3 Power Supply Connection
ETERNUS DX60 S2 Disk storage system User’s Guide -Site Planning-
46
Copyright 2012 FUJITSU LIMITED P3AM-5492-04ENZ0
■ LAN for remote support
Various failures that occur in the ETERNUS DX Disk storage system are notified to the remote
support center. Remote support connection can be separated from the LAN for operation man-
agement.
3.3 Power Supply Connection
Connect the power cords (AC cables) of the ETERNUS DX Disk storage system to the power
sockets, the UPS sockets, or the power control unit sockets.
Refer to "2.5 Outlet/Socket Specifications" (page 31)
for details about the types and the number
of power outlets/sockets.
3.3.1 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 config-
ured, business can continue even if one of the power lines fails.
To connect the ETERNUS DX Disk storage system to power supply facilities, use the following
configurations to improve the availability of the power supply facilities if a power supply facility
failure occurs.
• Connect the power cords of PSU#0 and PSU#1 to different lines.
• When a power distribution unit is used, separately connect it to line 0 (PSU#0) and line 1
(PSU#1).
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 3.6 Dual-line power supply when connecting to power sockets
Two power supply units (PSU#0 and PSU#1) are installed in each enclo-
sure. Make sure that power cords are connected to both of the power sup-
ply units.
Power distribution unit
ETERNUS DX
Disk storage system
Power supply
facility
Line 1
Line 0
PSU
PSU
Power supply
facility