Both Internet Gateway and HTTP Gateway output log files for different types of information. You can use this information to analyze errors.

The log files are in text format and are output to installation-directory\log. However, in Windows Server 2003, Windows XP, and Windows 2000, the files are output to the following directories in the drive on which the operating system is installed:

• Internet Gateway log file
  \Documents and Settings\All Users\Application Data\hitachi\dmgwsvr
  
• HTTP Gateway log file
  \Documents and Settings\All Users\Application Data\hitachi\dmhttpgw
  

At startup, five log files of each type are created with file names indicating the type of log and an appended numeric digit in the range 01-05. The extension is .txt. When all five files become full, they are overwritten beginning with file number 01. You can identify the most recent log information from the timestamp at the beginning of each line in the log file.

The output to the various types of logs are shown in the following tables.

• Log files common to both Internet Gateway and HTTP Gateway
  

  Log file name	Output
  env	At startup, Internet Gateway and HTTP Gateway output the following operating environment information. In contrast to other log files, only one env log file is output, and it is updated each time the software starts. OS, OS version, OS patch, CPU type, installed RAM, user usable memory size, free space, Microsoft Internet Explorer and Microsoft Internet Information Services version information, registry settings
  err	Session status when an error occurs

• Internet Gateway log files
  

  Log file name	Output
  client	Communications status between higher system and Internet Gateway
  cltproto	JP1/Software Distribution sync protocol between higher system and Internet Gateway

• HTTP Gateway log files
  

  Log file name	Output
  main	Information on program startup and termination. When the program starts, HTTP Gateway version information is output. When the program stops, the reason for termination is output. In Windows NT, the same information is also output to the event log. The event log can be checked using the Event Viewer. For details about using the Event Viewer, see the Windows NT documentation or online help.
  server	JP1/Software Distribution sync protocol between HTTP Gateway and lower system
  http	HTTP request and response status between HTTP Gateway and Internet Gateway