Chapter 2 Components
2.1 Controller Enclosure
FUJITSU Storage ETERNUS DX60 S2 Disk storage system User’s Guide -Installation-
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Copyright 2014 FUJITSU LIMITED
P3AM-5502-05ENZ0
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System Capacitor Unit (SCU)
A SCU is installed in a controller as a backup power source in case of power outage.
The SCU is charged from an external power source while the ETERNUS DX Disk storage
system is running normally. If a power outage is detected, data in the cache memory is saved to
a non-volatile memory in the controller using the SCU. The saved data is retained in the non-
volatile memory indefinitely.
2.1.4.2
Power Supply Units
The power supply unit transforms input AC power from a power socket to DC power and supplies
power to each component.
Each power supply unit contains a fan.
Figure 2.15 Power supply unit
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Part explanation
•
Inlet
This inlet is used to connect a power cord.
•
LEDs
The states of LEDs are listed below.
SAS (HOST)
LINKUP/FAULT
(green)
The link between the SAS port (host interface port)
and the destination has been established.
(orange)
The SAS port (host interface port) is in error status.
UNIT READY/
FAULT
(green)
The controller is in normal status.
(orange)
•
The controller is performing the initial setup after
the power is turned on.
•
The controller is in error status.
MASTER
(green)
The controller is set as a Master CM.
ACT
(green)
The controller is sending or receiving data via the LAN
port (for operation management).
LINK
(green)
The link between the LAN port (for operation
management) and the destination has been
established.
LED name
LED status
Controller status
STATUS LED
Inlet
