The temporary directory is used for various purposes, such as storage of temporary spooled file (for database specific backup type in %edition_name%), remote file list, local file list, temporary delta file and other files of temporary nature.
For database backup in %edition_name% such as MySQL, Oracle on Linux, MSSQL server 2005, and Lotus, it is highly recommended that the temporary directory or volume used for these modules is not a system volume (e.g. not the same partition which the operating system is installed on). And sufficient disk space must be allocated for the temporary directory, and the formula of calculation of disk space is as following:
(Total File Size * Delta Ratio) * number of backup destinations = Maximum Free Space Required
Administrators need to pay attention to the maximum file size limitation of different file system format, so that database file can be spooled to the temporary directory.
It is strongly suggested to use local drive instead of network drive to ensure optimal backup/restore performance.