SCSIEnclosure Services (SES) devices contains a number of elements, each of which is defined by a one byte SCSI element code. There are many different element codes defined to cover various devices as shown in the list below.
The SCSI initiator communicates with an SES device using two SCSI commands, Send Diagnostic and Receive Diagnostic Results. The most common SES elements are power-supply, cooling-fan, temperature-sensor and UPS. The SCSI command protocols assume that there may be more than one of each device type so they must each be given an 8-bit address. When the SES controller is interrogated for the status of an SES element, the response includes a 4-bit status code. The most common element status codes are: 1h=OK, 2h=critical, 3h=warning, 5h=not installed.
See the SES article for a more detailed description.
Status codesedit
When a SCSISES controller is interrogated for the status of a SES element, the response includes a 4-bit SCSI element status code. The list of valid codes is:
0h - unsupported - status detection is not implemented for this element
1h - OK - element is installed and no error conditions are known
2h - critical - critical condition is detected
3h - noncritical (warning) - noncritical condition is detected
4h - unrecoverable - unrecoverable condition is detected
5h - not installed - this element is not installed in the enclosure
6h - unknown - sensor has failed or element status is not available
7h - not available - element installed, no known errors, but the element has not been set into operation
scsi, element, codes, this, article, provides, insufficient, context, those, unfamiliar, with, subject, please, help, improve, article, providing, more, context, reader, october, 2009, learn, when, remove, this, message, scsi, enclosure, services, devices, con. This article provides insufficient context for those unfamiliar with the subject Please help improve the article by providing more context for the reader October 2009 Learn how and when to remove this message SCSI Enclosure Services SES devices contains a number of elements each of which is defined by a one byte SCSI element code There are many different element codes defined to cover various devices as shown in the list below Contents 1 List of SES element codes 2 How SES elements are used 3 Status codes 4 ReferencesList of SES element codes edit00h unspecified 01h device disk drive or other SCSI device 02h power supply 03h cooling 04h temperature sensor 05h door lock 06h audible alarm 07h enclosure services controller electronics 08h SCC controller electronics 09h nonvolatile cache 0Ah invalid operation reason used to determine why an ESI device has failed to complete a command 0Bh UPS 0Ch display 0Dh keypad 0Eh enclosure 0Fh SCSI port transceiver 10h language 11h communication port 12h voltage sensor 13h current sensor 14h SCSI target port 15h SCSI initiator port 16h simple subenclosure 17h array device 18h SAS expander 19h SAS connector 1Ah 7Fh reserved 80h FFh vendor specificHow SES elements are used editThe SCSI initiator communicates with an SES device using two SCSI commands Send Diagnostic and Receive Diagnostic Results The most common SES elements are power supply cooling fan temperature sensor and UPS The SCSI command protocols assume that there may be more than one of each device type so they must each be given an 8 bit address When the SES controller is interrogated for the status of an SES element the response includes a 4 bit status code The most common element status codes are 1h OK 2h critical 3h warning 5h not installed See the SES article for a more detailed description Status codes editWhen a SCSI SES controller is interrogated for the status of a SES element the response includes a 4 bit SCSI element status code The list of valid codes is 0h unsupported status detection is not implemented for this element 1h OK element is installed and no error conditions are known 2h critical critical condition is detected 3h noncritical warning noncritical condition is detected 4h unrecoverable unrecoverable condition is detected 5h not installed this element is not installed in the enclosure 6h unknown sensor has failed or element status is not available 7h not available element installed no known errors but the element has not been set into operation 8h Fh reservedReferences editStorageSecrets org SCSI Enclosure Services SES amp SES 2 Management 08 026r0 SES 2 Element control and status nomenclature fm T10 org page 20 and 22 nbsp This electronics related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title SCSI element codes amp oldid 990433782, wikipedia, wiki, book, books, library,
