C H A P T E R 1

Introduction

This chapter describes the Sun Fire V125 server and contains an overview of the following main features:

Bezel Features

Back Panel Features

System Prompts

Bezel Features

The front bezel of the Sun Fire V125 server contains the server status indicators and a space for placing an identification label.

FIGURE 1-1 Location of Status Indicators

Figure shows isometric view of the Sun Fire V125 server bezel. The activity, service required, and locator status indicators are identified.

Server Status Indicators

The server has three status indicators. They are located on the front bezel, and repeated on the back panel. A summary of the indicators is given in TABLE 1-1.

TABLE 1-1 Server Status Indicators
Indicator	LED color	LED State	Meaning
Activity	Green	On	The server is powered up and running the Solaris OS.
		Off	Either power is not present, or Solaris OS is not running.
Service Required	Yellow	On	The server has detected a problem and requires the attention of service personnel.
		Off	The server has no detected faults.
Locator	White	On	Identifies the server from others in a rack.

Table describes operation of activity, service required, and locator indicators used on the Sun Fire V125 server.

You can turn the Locator indicator on and off either from the system console or the Sun Advanced Light Out Manager (ALOM) command-line interface (CLI).

To Turn the Locator Indicator On

Do one of the following:

As superuser, type:

# /usr/sbin/locator -n

At the ALOM command-line interface, type:

sc> setlocator on

To Turn the Locator Indicator Off

Do one of the following:

As superuser, type:

# /usr/sbin/locator -f

At the ALOM command-line interface, type:

sc> setlocator off

To Display Locator Indicator Status

Do one of the following:

As superuser, type:

# /usr/sbin/locator

At the ALOM command-line interface, type:

sc> showlocator

Front Panel

Access the front panel by opening the bezel, which you do by pressing the release buttons on each side and rotating the bezel forward.

The front panel contains the following:

On/Standby button

Hard drive

System configuration card

On/Standby Button

The On/Standby button controls only the power state of the server; it does not isolate the server from its electrical power source. The On/Standby button is a momentary switch that you can operate two ways:

Press and immediately release

Press and hold down for more than 4 seconds

The results of these actions are summarized in TABLE 1-2.

TABLE 1-2 On/Standby Switch Actions and Results
Server Power State	Press and Release	Press Down for More Than 4 Seconds
On (with Solaris OS running)	Software performs orderly shutdown. Server enters Standby state.	Server enters Standby state directly.
On (with Solaris OS not running)	No effect.	Server enters Standby state directly.
Standby	Server enters On power state.	Server enters On power state.

Table describes power states of the server when running Solaris OS, not running Solaris OS, or in standby.

Controlling Server Power States

The server immediately goes into Standby mode as soon as it is connected to a power source. As long as it remains connected to the power source, the server stays in either the Standby or On power state. An explanation of the power states is given in TABLE 1-3.

TABLE 1-3 Explanation of Power States
Power State	Description
On	Server is connected to a power source and the power is enabled.
Standby	Server is connected to a power source but power is not enabled.
Off	Server is not connected to a power source. Power cable is disconnected.

Table describes on, standby, and off power-states for the server.

Note - The only way to completely remove power from the server is to disconnect the power cable.

Hard Drive

The Sun Fire V125 server ships with one hard drive; however, the server has slots for two hard drives. The slots accept any Sun LVD SCSI hard drive conforming to the 1-inch SCA-2 form factor.

The hard drive has two indicators associated with it. See TABLE 1-4 for a summary of what the indicators mean.

TABLE 1-4 Hard Drive Service Indicators
Indicator	LED color	LED State	Component Status
Activity	Green	Flashing	Active SCSI transactions
Activity		Off	No activity
Ready to Remove	Blue	On	Ready to remove
		Off	Not ready to remove

Table describes component status of green Activity and blue Ready to Remove LEDs, when the LEDs are on, off, and flashing.

For information on removing and replacing a hard drive, see Removing and Replacing the Hard Drive.

DVD Drive

The Sun Fire V125 server contains a bay to accept an optional slimline ATAPI DVD drive. The bay is located on the front panel and is accessed by opening the bezel.

For information on DVD drive installation, see Removing and Replacing the DVD Drive.

System Configuration Card

The system configuration card (SCC) is housed in a slot behind the front bezel, next to the On/Standby button. The card contains unique network identity information, including the MAC address and host ID (known as the IDPROM), and the OpenBoot PROM configuration (also known as NVRAM).

The server attempts to access the SCC while booting.

If a properly formatted card is not present in the reader, the system does not boot.

If the content of the NVRAM section is invalid, the system is not initialized with its default NVRAM configuration.

It is essential that you store the SCC safely if you have to remove it from the server, and replace it before restarting the system.

For more information, see Swapping a System Configuration Card Between Servers.

TABLE 1-5 OpenBoot PROM Configuration Parameters Stored on the System Configuration Card
Parameter	Default	Description
`diag-passes`	`1`	Defines the number of times self-test methods are performed.
asr-policy	normal	Defines the policy implemented by `asr-package`.
test-args	None	Defines the test arguments to be used by the `obpdiag` tests.
`local-mac-address?`	`true`	If `true`, network drivers use their own MAC address, not the server's.
`fcode-debug?`	`false`	If `true`, includes name fields for plug-in device FCodes.
`ttyb-rts-dtr-off`	`true`	If `true`, operating system does not assert RTS and DTR on TTYB port.
`ttyb-ignore-cd`	`false`	If `true`, operating system ignores carrier-detect on TTYB
`ttya-rts-dtr-off`	`true`	If true, operating system does not assert RTS and DTR on TTYA port.
`ttya-ignore-cd`		If `true`, operating system ignores carrier-detect on TTYA port.
`silent-mode?`	`false`	Suppresses all messages if true and `diag-switch?` is false.
`scsi-initiator-id`	`7`	SCSI-ID of the SCSI controller.
`oem-logo?`	`false`	If `true`, uses custom OEM logo, otherwise, use Sun logo.
`oem-banner?`	`false`	If `true`, uses custom OEM banner.
`ansi-terminal?`	`true`	If `true`, printable characters are displayed and control characters are interpreted.
verbosity	normal	Defines the POST and `obpdiag` verbosity level.
`screen-#columns`	`80`	Sets number of columns on the screen.
`screen-#rows`	`34`	Sets number of rows on the screen.
`ttya-mode`	`9600,8,n,1,-`	TTYA (baud rate, no bits, parity, no stop, handshake).
`ttyb-mode`	`9600,8,n,1,-`	TTYB (baud rate, no bits, parity, no stop, handshake).
`output-device`	`ttya`	Power-on output device.
`input-device`	`ttya`	Power-on input device.
`load-base`	`16384`	Address from which data is read from a device.
`auto-boot?`	`true`	If `true`, system boots automatically to OS after power on or reset occurs.
`boot-command`	`boot`	Action following a `boot` command.
`diag-file`	`none`	File from which to boot if `diag-switch?` is `true.`
`diag-device`	`net`	Device to boot from if `diag-switch?` is `true.`
`boot-file`	`none`	File to boot if `diag-switch?` is `false`.
`boot-device`	`disk net`	Device or devices from which to boot if `diag-switch?` is `false`.
`use-nvramrc?`	`false`	If true, executes commands stored in NVRAM during server start-up.
`nvramrc`	`none`	Command script to execute if `use-nvramrc?` is `true.`
`security-mode`	`none`	Firmware security level (options: `none`, `command`, or `full`).
`security-password`	`none`	Firmware security password if `security-mode` is not `none` (never displayed) - do not set this directly.
`security-#badlogins`	`none`	Number of incorrect security password attempts.
`diag-script`	`normal`	Defines the script name to be executed by `obpdiag`.
`diag-level`	`max`	Defines how diagnostic tests are run (options are `off`, `min`, `menu`, and `max`).
`diag-switch?`	`false`	If `true`: Run in diagnostic mode. After a `boot` request, boot `diag-file` from `diag-device.` If `false`: Run in nondiagnostic mode. Following a `boot` request, boot`-file` from `boot-device.`
diag-trigger	error-reset power-on-reset	Defines the type of system reset that will trigger POST and `obpdiag` operation.
service-mode?	false	Specifies the mode of operation for OBP, which can be `normal` or `service`.
`error-reset-recovery`	`boot`	Command to execute following a system reset generated by an error.

Table lists the OpenBoot PROM configuration parameters and default values that are stored on server's system configuration card. Table also describes system operation when default parameter values are initialized.

For additional information about OpenBoot PROM configuration parameters see:
http://www.sun.com/documentationSearch for the OpenBoot 4.x Command Reference Manual.

Back Panel Features

The server's I/O ports and power inlets are on the back panel.

FIGURE 1-2 I/O Ports

Figure shows back panel graphic of Sun Fire V125 server and indicates the location of serial, net management, serial management, Ethernet, USB, SCSI ports, and the power inlet..

I/O Ports

The I/O ports on the back of the Sun Fire V125 server are arranged as shown in FIGURE 1-2. For more information on the I/O ports, refer to the Sun Fire V125 Server Getting Started Guide.

Network Status Indicators

Each network connector has two status indicators.

FIGURE 1-3 Location of Network Status Indicators

Figure shows location of Network link and Network speed indicator. These indicators are located on the back panel of the server.

The network status indicators convey:

Network link status

Network speed status (does not apply to the NET MGT port)

For a summary of what the Network Link status indicators mean, see TABLE 1-6.

TABLE 1-6 Network Link Indicators
Indicator color	LED State	Network Link Status
Green	On	Link is established.
	Blinking	Link is transferring data.
	Off	Link is not established.

Table describes network link status when the green LED is on, blinking, or off.

For a summary of what the network speed indicators mean, see TABLE 1-7.

TABLE 1-7 Network Speed Indicators
Indicator color	LED State	Network Speed Status
Green	On	The network link is established and running at its maximum supported speed.
	Off	If the network activity indicator is on, the network link is established but not running at its maximum supported speed. If the network activity indicator is off, network link is not established.

Table describes the network speed status when the green Network Speed indicator is on or off.

USB Ports

The server has two USB ports for attaching supported USB devices. The ports are USB 1.1 compliant. They support device speeds of 1.5 Mbit/sec and 12 Mbit/sec, and a 5V supply is available at each connector to power the external device.

External SCSI Port

The SCSI port is a multimode Ultra160 SCSI interface. To operate at Ultra160 SCSI speeds, it must be in Low Voltage Differential (LVD) mode. If a single-ended device is connected to the server, it automatically switches to single-ended mode.

Power Supply Unit

The Sun Fire V125 server has one PSU and two associated status indicators. TABLE 1-8 summarizes the function of the indicators.

TABLE 1-8 Power Supply Unit Indicators
Indicator color	LED State	Component Status
Green	On	Power is present, and the PSU is active.
	Off	Either power is not present, or the PSU has shut down due to an internal protection event.
Amber	On	The PSU has shut down due to an internal protection event and requires service attention.
	Off	The PSU is operating normally.

Table describes component status of green and amber power supply indicators in on and off states.

Caution - As long as AC power is supplied to the server, potentially dangerous voltages might be present within the server.

System Prompts

The following default server prompts are used by the Sun Fire V125 server:

ok - OpenBoot PROM prompt

sc - Advanced Lights Out Manager (ALOM) prompt

# - Solaris OS superuser (Bourne and Korn shell)

FIGURE 1-4 shows the relationship between the three prompts and how to change from one prompt to another.

FIGURE 1-4 System Prompt Flow Diagram

Process flow diagram. This diagram describes how to go obtain ALOM, OpenBoot PROM, or Solaris super user prompts by using a console or by using the shutdown, halt, or init 0 commands.

For additional information about obtaining switching from OpenBoot PROM to server console (sc) prompts see Basic ALOM Functions.