SCSI Primary Commands - 2.pdf

18 July 2001 T10/1236-D Revision 20Annex A(Informative)Procedures for logging operations in SCSIA.1 Procedures for logging operations in SCSI introductionThis annex provides guidance in the use of the LOG SELECT and LOG SENSE commands defined in clause 7.This annex does not replace the descriptions in clause 7 and is not intended to conflict with clause 7. The purposeof this annex is to provide more information to gain a more uniform implementation of the SCSI logging functions.A.2 Logging operations terminologyA.2.1 list parameter: A parameter value that consists of a string of ASCII graphic codes or a binary value.A.2.2 log page: A page made up of one or more log parameters.A.2.3 log parameter: Log information that is made up of a parameter code, a parameter control byte, and aparameter value.A.2.4 parameter code: A unique identifier that is used to distinguish between the different log parameters within asingle log page.A.2.5 parameter control byte: Used to tell the device server how to update, save, use thresholds, determineformat, etc. of the parameter value.A.2.6 parameter pointer field: Contains a parameter code.A.2.7 parameter value: A counter, cumulative, threshold, or ASCII value.A.2.8 GT: Greater ThanA.2.9 NV: Not ValiddpANS SCSI Primary Commands - 2 (SPC-2) 219