Semantic conventions for disk controller metrics

Status: Development

Disk controller metrics hw.disk_controller.*

Controller that controls the physical disks and organize them in RAID sets and logical disks that are exposed to the operating system.

hw.type MUST be set to "disk_controller".

All disk controller metrics may include the below attributes:

Attributes:

Key	Stability	Requirement Level	Value Type	Description	Example Values
hw.id		Required	string	An identifier for the hardware component, unique within the monitored host	win32battery_battery_testsysa33_1
hw.bios_version		Recommended	string	BIOS version of the hardware component	1.2.3
hw.driver_version		Recommended	string	Driver version for the hardware component	10.2.1-3
hw.firmware_version		Recommended	string	Firmware version of the hardware component	2.0.1
hw.model		Recommended	string	Descriptive model name of the hardware component	PERC H740P; Intel(R) Core(TM) i7-10700K; Dell XPS 15 Battery
hw.name		Recommended	string	An easily-recognizable name for the hardware component	eth0
hw.parent		Recommended	string	Unique identifier of the parent component (typically the hw.id attribute of the enclosure, or disk controller)	dellStorage_perc_0
hw.serial_number		Recommended	string	Serial number of the hardware component	CNFCP0123456789
hw.vendor		Recommended	string	Vendor name of the hardware component	Dell; HP; Intel; AMD; LSI; Lenovo

Metric: hw.status (Disk Controller)

This metric is recommended.

Operational status: 1 (true) or 0 (false) for each of the possible states.

When using this metric for disk controller status, the following attributes MUST be set:

• hw.type MUST be set to "disk_controller" to indicate that the status is for a disk controller.
• hw.state MUST be set to one of the following values to indicate the disk controller state:
  • "ok": The disk controller is operating normally.
  • "degraded": The disk controller is operating with reduced functionality or performance.
  • "failed": The disk controller has failed and is not operational.

Name	Instrument Type	Unit (UCUM)	Description	Stability	Entity Associations
hw.status	UpDownCounter	1	Operational status: 1 (true) or 0 (false) for each of the possible states. [1]

[1]: hw.status is currently specified as an UpDownCounter but would ideally be represented using a StateSet as defined in OpenMetrics. This semantic convention will be updated once StateSet is specified in OpenTelemetry. This planned change is not expected to have any consequence on the way users query their timeseries backend to retrieve the values of hw.status over time.

Attributes:

Key	Stability	Requirement Level	Value Type	Description	Example Values
hw.id		Required	string	An identifier for the hardware component, unique within the monitored host	win32battery_battery_testsysa33_1
hw.state		Required	string	The current state of the component	degraded; failed; needs_cleaning
hw.type		Required	string	Type of the component [1]	battery; cpu; disk_controller
hw.name		Recommended	string	An easily-recognizable name for the hardware component	eth0
hw.parent		Recommended	string	Unique identifier of the parent component (typically the hw.id attribute of the enclosure, or disk controller)	dellStorage_perc_0

[1] hw.type: Describes the category of the hardware component for which hw.state is being reported. For example, hw.type=temperature along with hw.state=degraded would indicate that the temperature of the hardware component has been reported as degraded.

hw.state has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.

Value	Description	Stability
degraded	Degraded
failed	Failed
needs_cleaning	Needs Cleaning
ok	OK
predicted_failure	Predicted Failure

hw.type has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.

Value	Description	Stability
battery	Battery
cpu	CPU
disk_controller	Disk controller
enclosure	Enclosure
fan	Fan
gpu	GPU
logical_disk	Logical disk
memory	Memory
network	Network
physical_disk	Physical disk
power_supply	Power supply
tape_drive	Tape drive
temperature	Temperature
voltage	Voltage