Cisco Cisco C880 M4 Server インストールガイド
3.1Switches on the Front Side
12 Operating Manual
3.1. Switches on the Front Side
There are three switches on the front side. They are available after taking off the bezel only and should not
be used by the customer.
DC-ON switch (pushbutton) / AutoPower / MODE_SEL
The switches should not be used by the customer (they are behind the bezel). In the default
settings, the storage subsystem powers ON/OFF automatically with the data host.
Default
setting
Operation
MODE_SEL
Off=down
On=Up
AutoPower
Off=down
On=up
Yes
Power ON: SAS signal detected
Power OFF: SAS signal not detected
ON
OFF
No*
Power ON: AC-ON and SAS signal d etected
Power OFF: AC-OFF
ON
ON
No*
Power ON: DC-ON Switch
Power OFF: DC-ON Switch for more than 4 sec
and SAS signal not detected
OFF
OFF
No*
Power ON: AC-ON
Power OFF: AC-OFF or DC-ON Switch for
more than 4 sec"
OFF
ON
*: for service personnel and error diagnostics only
3.2. Indicator Elements on the Front Side
You can see the following on the front side of the storage subsystem:
–
the four operating status LEDs which indicate the power supply, the ready status, the fault status and
the identification. The fifth LED (CACHE LED) is covered by the bezel.
–
Status LEDs of the hard disk drives
There is a Ready LED and a Fault LED for each of the 24 possible hard disk drives.