Fujitsu ETERNUS DX60 S2 User Manual page 21

Chapter 1 Components
1.1 Controller Enclosure
• PWC port
This port is used for power synchronization.
• DI (OUT) port
This port is used to connect a controller enclosure to a drive enclosure with a miniSAS cable.
• LEDs
The states of LEDs are listed below.
Table 1.6
SCU STATUS
IDENTIFY
DI (OUT) LINKUP
SAS (HOST)
LINKUP/FAULT
UNIT READY/
FAULT
MASTER
ACT
LINK
■
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.
ETERNUS DX60 S2 Disk storage system User's Guide -Operation-
Status and meanings of each LED (SAS model controller)
LED name LED status
(green)
(blinks green)
(blinks blue)
(off)
(green)
(green)
(orange)
(green)
(orange)
(green)
(green)
(green)
Copyright 2013 FUJITSU LIMITED
The SCU is in normal status.
SCU is charging.
As ordered via ETERNUS Web GUI, the installation
location of the controller enclosure is identified.
The link between the DI (OUT) port and the destination
has been established.
The link between the SAS port (host interface port) and
the destination has been established.
The SAS port (host interface port) is in error status.
The controller is in normal status.
•
The controller is performing the initial setup after the
power is turned on.
•
The controller is in error status.
The controller is set as a Master CM.
The controller is sending or receiving data via the LAN
port (for operation management).
The link between the LAN port (for operation
management) and the destination has been
established.
21
Controller status
P3AM-5512-05ENZ0