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SAFTE(4) Device Drivers Manual SAFTE(4)

safteSCSI Accessed Fault-Tolerant Enclosure

safte* at scsibus?

The safte driver provides support for monitoring the various environmental sensors present in SCSI enclosures using the SCSI Accessed Fault-Tolerant Enclosure command set. The hardware monitor is used with the sysctl(8) interface.

SAF-TE compliant devices can provide an arbitrary set of sensors from the following types:

uK temperature
RPM fan
On/Off power supply
On/Off door lock
On/Off enclosure alarm

Sensor data is updated every 10 seconds.

An enclosure may provide environmental information using an alternative to the SCSI Accessed Fault-Tolerant Enclosure command set used by this driver. Enclosures using the SCSI Enclosure Services command set may be monitored by the ses(4) driver.

intro(4), scsibus(4), ses(4), sensorsd(8), sysctl(8)

The safte driver first appeared in OpenBSD 3.8.

The safte driver was written by David Gwynne <>.

July 16, 2013 OpenBSD-6.4