Cisco C880 M4 Kullanım Kılavuzu - Sayfa 12

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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

Operation

setting

Yes

Power ON: SAS signal detected

Power OFF: SAS signal not detected

No*

Power ON: AC-ON and SAS signal d etected

Power OFF: AC-OFF

No*

Power ON: DC-ON Switch

Power OFF: DC-ON Switch for more than 4 sec

and SAS signal not detected

No*

Power ON: AC-ON

Power OFF: AC-OFF or DC-ON Switch for

more than 4 sec"

*: for service personnel and error diagnostics only

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.

Operating Manual

3.1Switches on the Front Side

MODE_SEL

AutoPower

Off=down

On=Up

On=up

OFF