Sensors

Sensors report the state of 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	Discrete 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). NEMn 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. 0x0002 – FM`n` is present.
FM`n`/ERR	0x0001 – Asserted. FM`n` is absent. This is a fault. 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	Discrete 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	PS`n` output voltage error: 0x0001 – Deasserted – PS`n` – output voltage is normal. 0x0002 – Asserted – PS`n` – output voltage error.
PS`n`/I_OUT_ERR	PS`n` 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	PS`n` 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 (CMODs)

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	0x01	0x0: Unknown 0x01: Running 0x04: Powered off 0x10: Off duty
BL`n`/ERR	0x01	0x01: Predictive failure deasserted. 0x02: Predictive failure asserted.
BL`n`/HOT	0x01	0x1: Deasserted, CMOD is cool/normal. 0x02: Asserted, CMOD is hot and blasting the fan.
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 expansion module 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`/T_AMB	27 degrees C	Processor module ambient temperature.

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	Sun Server X2-8 Product Documentation Sun Server X2-8 (formerly Sun Fire X4800 M2) Documentation Library