Figure 1.15 Host Interface (Sas); Figure 1.16 Power Supply Unit - Fujitsu ETERNUS DX80 S2 User Manual

Chapter 1 Components
1.1 Controller Enclosure
●
SAS

Figure 1.15 Host interface (SAS)

SAS
Installed host interfaces in the controller
Host interface (CA#0)
• Part explanation
- Host interface ports (SAS) (from left to right: Port#0 and Port#1 in CA#0, Port#0 and Port#1 in CA#1)
These are the SFF-8088 connectors to connect miniSAS cables.
■ 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 the non-volatile memory in the
controller using the SCU. The saved data is retained in the non-volatile memory indefinitely.
1.1.4.2 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 fans.

Figure 1.16 Power supply unit

POWER LED
PSU FAIL LED
AC MISSING LED
FAN FAIL LED
ETERNUS DX80 S2/DX90 S2 Disk storage system User's Guide -Operation-
Port#0 Port#1
Copyright 2013 FUJITSU LIMITED
Port#0 Port#1
Host interface (CA#1)
Inlet
PSU switch
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P3AM-4842-12ENZ0