The Working Directory

The working directory is the location where Express Server stores information about image catalogs, including indexes, catalog overviews, the configuration archive, and catalog configuration files. Depending on the size and number of your image catalogs, the working directory may require several gigabytes of space. To alleviate space constraints, you may specify another directory to use for the working directory. For example, you may choose to store the working directory on an external drive.

By default, Express Server uses the following directory as the working directory:

<Express Server Installation Directory>/Express Server/ImageServer/var/data

If you change the working directory, existing indexes and catalog configuration files are moved to the new directory. However, the configuration archive which contains past versions of the Express Server configuration remains in the former working directory. Because the configuration archive contains relative paths, the archive cannot be moved to another working directory. For more information on the configuration archive, and to clear the configuration archive, see Clearing the Configuration Archive.

Setting the Working Directory

Before you set another working directory, you must ensure that Express Server can access the directory. The following services and daemons require read, write, and delete permissions for the directory that you want to set as the working directory:

• LizardTech Express Server Tomcat service or daemon. Grant permissions to the user that runs the Tomcat service or daemon. On Windows, the Tomcat service runs on the NetworkService account by default. You can view the account that runs the Tomcat service in the Windows Services utility. On Linux, the Tomcat daemon runs on the account specified during the installation of Express Server.
• LizardTech Express Server Admin Backend service or daemon. Grant permissions to the user that runs the Admin Backend service or daemon. On Windows, the service runs on the Local System account by default. You can view the account that runs the Admin Backend service in the Windows Services utility. On Linux, the Admin Backend daemon, also known as ltcsd, runs on the account specified during the installation of Express Server.
• IIS Web Server service. For Windows only, grant permissions to user that runs the IIS service. By default, the IIS service runs on the anonymous IUSR account. You can view the account that runs the IIS service in the IIS Manager.

To set another working directory, complete the following steps:

1. Open the Express Server Manager (see Accessing the Express Server Manager).
2. Click Settings on the top navigation bar, then select the Basic tab on the left-hand navigation and click Edit.
3. Click the Browse button next to the Working Directory setting to search for a location. The Select Working Directory dialog appears.
4. Navigate to the directory that you want use as the working directory and click Add.
5. Click Save.
6. If you have no further settings to edit, click Publish.