Chapter 2 Components
2.1 3.5" Type Controller Enclosure
ETERNUS DX60/DX80/DX90 Disk storage system User Guide
55
Copyright 2011 FUJITSU LIMITED
P3AM-3042-08ENZ0
●
ETERNUS DX60/DX80 SAS model
shows the ETERNUS DX60/DX80 SAS model controller.
Figure 2.9
ETERNUS DX60/DX80 SAS model controller
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System Capacitor Unit (SCU)
An SCU is installed in the controller as a backup power source in case of power outage.
SAS (HOST) LINKUP/FAULT LED
Glows green ( ) when link has been established.
Glows orange ( ) to indicate a SAS port failure has been detected.
SAS port (0 (left), 1 (right))
miniSAS (SFF8088) connectors for miniSAS cables
SCU STATUS LED
Glows green ( ) when SCU is normal.
Blinks green ( ) when being charged
(for about one minute after the device power is turned on).
IDENTIFY LED
Blinks blue
( )
or turns off
( )
as ordered via GUI to
identify the enclosure installation locations.
SAS (DE) LINKUP LED
Glows green ( ) when link has been established.
LAN port (1000Base-T/100Base-TX/10Base-T)
(RMT port (left), MNT port (right))
RJ45 connectors for LAN cables
Each controller has two such ports.
UNIT READY/FAULT LED
Glows green ( ) during normal operation.
Glows orange ( ) during the post power on
initialization phase. Also glows orange ( ) to
indicate a fault has been detected.
MASTER LED
Glows green ( ) when the controller is set
as the Master CM.
PWC port
This is not used.
ACT LED
Glows green ( ) when data is being sent and received.
LINK LED
Glows green ( ) when link has been established.
SAS (OUT) port
Connector for a miniSAS cable
Used to connect the Controller Enclosure to a Drive Enclosure.
IMPORTANT
•
If a power failure lasts for more than 20ms, the SCU starts supplying
power, and the controller's cache data is copied to flash memory.
There is no limit to the post-failure data retention time.
•
SCU failure will disable the cache function, leading to degraded
performance.
