The temporary folder used for indexing has specific usage and size requirements.
When you are indexing with IBM Content Search Services (CSS), the operation fails because the file system ran out of disk space.
Put the temporary folder in a file system that has at least 5 GB of disk space. The performance of CSS can be improved if the folder is located on a RAM disk or other fast storage, such as a solid-state drive.
The temporary folder is located in the following default path, depending on your operating system: C:\Program Files\IBM\ContentSearchServices\CSS_Server\temp (WIndows) or /opt/IBM/ContentSearchServices/CSS_Server/temp (non-Windows). You can change the default path with the command-line configuration tool when the CSS server is not running.