Sensors

Sensors report the state of the sensors located throughout the server's components.

System Sensors

Sensors report physical information about the server, including voltages, temperatures, fan speeds, and installation and removal of components.

Sensor	Description
PWRBS	Unused
ACPI	System power 0x0010 – server is ON 0x0020 – server is OFF
SP/T_AMB	Service processor temperature in degrees
T_AMB	Ambient chassis temperature Upper critical temperature = 40'C Upper non-recoverable temperature = 45'C
HOT	Discreet temperature sensor on processor modules 0x0001 = deasserted. Main fans run at normal speed 0x0002 = asserted. Main fans run at high speed
VPS	Chassis power consumption in Watts

NEMs

The server supports one or two Network Expansion Modules (NEMs). NEMx identifies, NEM0 or NEM1.

Sensor	Description
NEM`n`/PRSNT	0x0001 – NEM`n` is absent 0x0002 – NEM`n` is present
NEM`n`/STATE	0x0001 – NEM`n` is running 0x0004 – NEM`n` is powered off 0x0020 – NEM`n` is ready to be removed
NEM`n`/ERR	0x0001 – Asserted. NEM`n` has faults 0x0002 – Deasserted. NEM`n` has no faults

Chassis Fan Modules and Fans

The chassis has four fan modules with two fans each.

n represents fan modules 0 through 3
x represents fans 0 or 1

Sensor	Description
FM`n`/PRSNT	0x0001 – FM`n` is absent. Non-fault 0x0002 – FM`n` is present. Fault.
FM`n`/ERR	0x0001 – Asserted. FM`n` is absent. SERVICE LED is ON. 0x0002 – Deasserted. FM`n` is not faulty.
FM`n`/F`x`/TACH	Speed of the fan in revolutions per minute.

Power Supply

This section lists the power supply sensors. PSn identifies PS0 through PS3.

Sensor	Description
PS`n`/P_IN	Input power for PS`n`
PS`n`/P_OUT	Output power for PS`n`
PS`n`/V_IN	Input voltage for PS`n`
PS`n`/V_12V	Voltage for 12V rail of PS`n`
PS`n`/V_3V3	Voltage for 3.3V rail of PS`n`
PS`n`/T_AMB	Ambient temperature sensor for PS`n`
PS`n`/V_OUT_OK	Discreet sensor for PS`n` output. 0x0001 – Deasserted – PS`n` – output is OFF 0x0002 – Asserted – PS`n` – output is ON
PS`n`/V_IN_ERR	PS`n` input voltage error. 0x0001 – Deasserted – PS`n` – input voltage is normal 0x0002 – Asserted – PS`n` – input voltage error
PS`n`/V_IN_WARN	PS`n` input voltage warning. 0x0001 – Deasserted – PS`n` – input voltage is normal 0x0002 – Asserted – PS`n` – input voltage is out of range
PS`n`/V_OUT_ERR	PSn output voltage error 0x0001 – Deasserted – PS`n` – output voltage is normal 0x0002 – Asserted – PS`n` – output voltage error
PS`n`/I_OUT_ERR	PSn output current 0x0001 – Deasserted – PS`n` – output current is normal 0x0002 – Asserted – PS`n` – output current error
PS`n`/I_OUT_WARN	PS`n` output current warning 0x0001 – Deasserted – PS`n` – output current is normal 0x0002 – Asserted – PS`n` – output current is out of range
PS`n`/T_ERR	PSn temperature fault 0x0001 – Deasserted – PS`n` temperature is OK 0x0002 – Asserted – PS`n` temperature error
PS`n`/T_WARN	PS`n` temperature warning 0x0001 – Deasserted – PS`n` temperature is OK 0x0002 – Asserted – PS`n` temperature warning
PS`n`/FAN_ERR	PS`n` fan fault 0x0001 – Deasserted – PS`n` fans OK 0x0002 – Asserted – PS`n` fans faulty
PS`n`/FAN_WARN	PS`n` fan warning 0x0001 – Deasserted – PS`n` fans OK 0x0002 – Asserted – PS`n` fans warning
PS`n`/ERR	PS`n` error 0x0001 – Deasserted – PS`n` OK 0x0002 – Asserted – PS`n` fault
PS`n` PRSNT	PS`n` presence 0x0001 – PS`n` is absent. Chassis is faulted when PS`n` is missing. 0x0002 – PS`n` is present. Chassis is OK.

Hard Disk Drive Sensors

The server supports eight hard disk drives (HDDs). HDDn identifies HDD0 through HDD7.

Sensor	Description
DBP/HDD`n`/PRSNT	HDD`n` presence 0x0001 – HDD`n` is absent. This is not a fault. 0x0002 – HDD is present.
DBP/HDD`n`/STATE	HDD`n` state 0x0001 – HDD`n` is normal. 0x0002 – HDD is faulted.

Processor Modules

The server contains two or four processor modules. BLn identifies processor modules BL0 through BL3.

Sensor	Example	Description
BL`n`/PRSNT	0x02	0x02 = present, 0x01 = not present. Processor module 0 and 3 must be present Processor modules 1 and 2 are optional
BL`n`/VPS	290 Watts	Power used by processor module.
BL`n`/STATE	0x04	RANGES AND VALUES TBD
BL`n`/ERR	0x01	RANGES AND VALUES TBD
BL`n`/HOT	0x01	RANGES AND VALUES TBD
BL`n`/FEM`x`/PRSNT	0x02	Each processor module can support one or two Fabric Expansion Modules (FEMs), FEM0 and FEM1.
Bl`n`/REM/PRSNT	0x01	Each processor module can support a single Raid Expansion Module (REM)
EM`x`.`x`/PRSNT	0x01	The server provides eight PCIe ExpansionModule slots. Each processor module is associated with two slots. 0.0 – slot 0 – BL0 0.1 – slot 1 – BL0 1.0 – slot 2 – BL1 1.1 – slot 3 – BL1 2.0 – slot 4 – BL2 2.1 – slot 5 – BL2 3.0 – slot 6 – BL3 3.1 – slot 7 – BL3
BL`n`/Px/PRSNT	0x02	Each processor module supports two processors, P0 and P1.
BL`n`/FMOD`x`/PRSNT	0x01	Each processor module supports two fan modules, FMOD0 and FMOD1.
BL`n`/T_AMB	27 degrees C	Processor module ambient temperature.

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	Sun Fire X4800 Server Product Documentation