Disk space management

You can manage your available disk space to ensure optimal performance for InfoSphere® Master Data Management Collaboration Server - Collaborative Edition and all temporary storage partitions.

Although InfoSphere Master Data Management Collaboration Server - Collaborative Edition is not a particularly disk-intensive system. You need to manage your disk space to ensure adequate storage space for your system and all temporary partitions. Managing your disk space involves maintaining separate file systems, providing sufficient disk space, using shared devices for storage, managing temporary files.

Use separate file systems

For improved disk space administration, optimal configuration is to use separate file systems for each application server and database server:

Application server
  • OS components
  • Third party components
  • InfoSphere Master Data Management Collaboration Server - Collaborative Edition:
    • Executable files
    • Temporary work files
    • Log files
Database server
  • Document store
  • Database-related files

Use shared storage devices

For clustered machine environments, shared storage is necessary for your application servers and recommended for your web servers:
  • The $TOP directory must be shared in the same location on all application servers in the cluster. For example, if $TOP is /usr/local/envs/wpc, then all machines in the cluster should see $TOP as /usr/local/envs/wpc.
  • Install the application server and support applications such as Apache and JDK on your local storage device.

Log files can be stored either in your local storage or in shared storage.

Store your temp directory on your local storage device by specifying the tmp_dir parameter in the common.properties file.

Manage temporary files

  • Temporary files hold temporary runtime-generated files. Store your temporary files on your shared storage device in the $TOP/public_html/created_files/distributor directory.

    Your temporary file directories might differ from those that are listed in the following table, depending on your version of the product:

    $TOP/public_html/created_files/distributor
    Table 1. The $TOP/public_html/created_files/distributor directory
    Purpose When to delete Recommendation Example
    For outbound FTP distributions, the queue manager downloads a document from the database into this directory for temporary storage, then transfer the file to the destination. Delete all of the files in this directory during all scheduled application downtimes. Use a seven-day life span for the temporary files and sort all files by date. Then, delete anything older than seven days. These examples, for Linux®, show how to find, sort, and delete files older than seven days from the command-line.
    • To access the distributor file directory:
      cd $TOP/public_html/created_files/distributor
    • To view files that are older than seven days:
      find . -type f -mtime +7 -exec ls -l {} \;
    • To delete the files that are older than seven days:
      find . -type f -mtime +7 -exec rm -f {} \;
    $TOP/public_html/suppliers/company code/aggregated_files
    Table 2. The $TOP/public_html/suppliers/company code/aggregated_files directory
    Purpose When to delete
    Import and export files that are retrieved through an FTP fetch are temporarily stored in this directory. Do not delete this directory from within the file system. If necessary, access this directory from the InfoSphere Master Data Management Collaboration Server - Collaborative Edition user interface to delete files.
    $TOP/public_html/suppliers/company code/tmp_files
    Table 3. The $TOP/public_html/suppliers/company code/tmp_files directory
    Purpose When to delete Recommendation
    This directory stores temporary work files. This directory stores temporary work files. You can purge files automatically when InfoSphere Master Data Management Collaboration Server - Collaborative Edition is restarted or with a schedule you define. Save the files in this directory for a few weeks and purge them regularly.
    $TOP/logs
    Table 4. The $TOP/logs directory
    Purpose When to delete Recommendation
    This directory holds the InfoSphere Master Data Management Collaboration Server - Collaborative Edition middleware log files. Provide sufficient disk space that is based on your defined logging detail level of either error or debug mode. The average full-day time span generates approximately 30 - 40 MB of log files. You can set up InfoSphere Master Data Management Collaboration Server - Collaborative Edition to automatically purge these log files by configuring the log4j.xml file in the $TOP/etc/default directory. Specify 2 - 3 GB of disk space in case you need to use the debug mode.