Hitachi TAGMASTORE MK-90RD011-25 - Manual (Page 371)

Hitachi Command Control Interface (CCI) User and Reference Guide 353
Appendix A Maintenance Logs and Tracing Functions
A.1 Log Files
The CCI software (HORCM) and Hitachi TrueCopy/ShadowImage commands maintain internal
logs and traces which can be used to identify the causes of errors and keep records of the
status transition history of paired volumes. Figure A.1 shows the CCI logs and traces.
HORCM logs are classified into start-up logs and execution logs. The start-up logs contain
data on errors which occur before the HORCM becomes ready to provide services. Thus, if
the HORCM fails to start up due to improper environment setting, users should refer to the
start-up logs to resolve the problem. The HORCM execution logs (error log, trace, and core
files) contain data on errors which are caused by software or hardware problems. These logs
contain internal error data which does not apply to any user settings, and so users do not
need to refer to the HORCM execution logs. When an error occurs in execution of a
command, data on the error is collected in the command log file. Users may refer to the
command log file if a command execution error occurs.
Command
Command log
file
Command execution environment
HORCM
HORCM
start-up logs
HORCM
logs
HORCM
traces
Command
traces
HORCM
core
Command
core
HORCM execution environment
Log directory
Log directory
Command Command
Figure A.1 Logs and Traces