FUJITSU Disk Storage System DX60 - Manual (Page 21)

Chapter 1 Components
1.1 Controller Enclosure
ETERNUS DX60 S2 Disk storage system User’s Guide -Operation-
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Copyright 2012 FUJITSU LIMITED P3AM-5512-03ENZ0
• 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 Status and meanings of each LED (SAS model controller)
■ 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.
LED name LED status Controller status
SCU STATUS
(green)
The SCU is in normal status.
(blinks green)
SCU is charging.
IDENTIFY
(blinks blue)
As ordered via ETERNUS Web GUI, the installation
location of the controller enclosure is identified.
(off)
DI (OUT) LINKUP
(green)
The link between the DI (OUT) port and the destination
has been established.
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.