Switch Operations Facility › SOF Command Interface › Hardware Device IDs

Hardware Device IDs

SOF converts the 32-byte NED of each discovered hardware device into a 28-byte hardware device ID, more simply referred to as the device ID or DEVID. The DEVID is used by SOF to correlate devices among the multiple z/OS systems in the SOF complex.

The 28-byte DEVID is included in GLOBAL SOF displays as 35 printable characters, formatted as follows:

• Replaces non-printable characters with the character zero
• Inserts a period between the individual fields (type, model number, manufacturer, location, serial number, and tag)
• Converts the 2-byte binary tag to 4 printable hex characters

Example: DEVID in a GLOBAL SOF Display

The following is a typical DEVID as it would appear in a GLOBAL SOF display:

002105.000.EMC.06.300000020720.0023

For devices that are genned but do not physically exist, and older devices that do not support a NED, SOF creates an artificial DEVID, which has the following format when displayed:

@ttttt.---.---.--.NOCDR-------.nnnn

ttttt

Abbreviated device type examples: CTC, 3277, 3390, 3490, and so on

nnnn

Unique serial number assigned by SOF

Note: The first byte of an artificial DEVID is actually x'FF', but is displayed by SOF server and OPSVIEW option 3.5 as the printable character '@'.