This is the parameter that is used only by BRBACKUP to identify the directories in which database backups to disk are performed. In exceptions (for example, no definition of the parameter archive_copy_dir), BRARCHIVE also uses the directories defined in this parameter if disk backup is required. If you enter more than one directory, you must enclose the names in parentheses and separate them by commas.
Syntax: backup_root_dir = <dir>|(<dir_list>)
Required value: Directories to which the backups performed on disk should be written.
If you do not have enough storage space in one of the directories on your disk, you should provide directories on other disks and add their names in the parameter backup_root_dir. BRBACKUP then uses these directories for database backup.