HP Storage Mirroring V5 Software - Manual (Page 148)

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Log Files
Various Storage Mirroring components (Storage Mirroring service, Management Console, Failover Control Center, Text
Client, and the Command Line Client) generate a log file to gather alerts, which are notification, warning, and error messages.
The log files are written to disk. They can be viewed, from the location where Storage Mirroring is installed, with a standard
text viewer. The log file output can be filtered using the Storage Mirroring LogViewer utility.
Each log file consists of a base name, a series number, and an extension.
‹ Base Name —The base name is determined by the application or process that is running:
‹ Series Number —The series number ranges from 1 to 999 . For example, Storage Mirroring begins logging messages to
dtlog1 . When this file reaches its maximum size, the next log file will be written to dtlog2 . As long as log messages
continue to be written, files dtlog3 , dtlog4 , dtlog5 will be opened and filled. When the maximum number of files is
reached, which by default is 5 , the oldest file is deleted when the sixth file is created. For example, when dtlog6 is
created, dtlog1 is deleted and when dtlog7 is created, dtlog2 is deleted. When file dtlog999 is created and filled,
dtlog1 will be re-created and Storage Mirroring will continue writing log messages to that file. In the event that a file
cannot be removed, its number will be kept in the list, and on each successive file remove, the log writer will attempt to
remove the oldest file in the list.
‹ Extension —The extension for each log file is .dtl .
1. To modify the maximum file size and the number of Storage Mirroring log files that are maintained, access the Server
Properties dialog box by right-clicking a machine name in the left pane of the Management Console and selecting
Properties .
2. Select the Logging tab.
3. At the top of the window, Folder indicates the directory where the log files are located. The default is the directory
where the Storage Mirroring program files are installed.
4. Modify any of the options under Messages and Alerts , if necessary.
‹ Maximum Length —Specify the maximum length of the log file. The default size is 1048576 bytes and is limited by
the available hard drive space.
‹ Maximum Files —Specify the maximum number of log files that are maintained. The default is 5 and the maximum
is 999 .
5. Click OK to save the changes.
Component Log File Base Name
Storage Mirroring dtlog
Management Console mc
Failover Control Center fcc
Text Client dttxt
Command Line Client dtcl
Component Sample Log File Names
Storage Mirroring dtlog1.dtl , dtlog2.dtl
Management Console mc1.dtl , mc2.dtl
Failover Control Center fcc1.dtl , fcc2.dtl
Text Client dttxt1.dtl , dttxt2.dtl
Command Line Client dtcl1.dtl , dtcl2.dtl
NOTE: If you change the Maximum Length or Maximum Files , you must restart the Storage Mirroring service
for the change to take effect.