Fujitsu Eternus DX80 S2 - Figure 1.15 Host Interface (SAS); Figure 1.16 Power Supply Unit

Chapter 1 Components
1.1 Controller Enclosure
ETERNUS DX80 S2/DX90 S2 Disk storage system User’s Guide -Operation-
Copyright 2013 FUJITSU LIMITED P3AM-4842-12ENZ0
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● SAS
Figure 1.15 Host interface (SAS)
• 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
SAS
Port#0 Port#1Port#0 Port#1
Installed host interfaces in the controller
Host interface (CA#0)
Host interface (CA#1)
Inlet
PSU switch
PSU FAIL LED
AC MISSING LED
POWER LED
FAN FAIL LED