Hi,
you just have to transfer the "filestore" folder to the external
storage. After that, either set a symbolic link (on Unix/Linux OS)
named "filestore" to the external storage or in config.php:
# Uncomment and set next two lines to configure storage locations (to
use another server for file storage)
#$storagedir="/path/to/filestore"; # Where to put the media files. Can
be absolute (/var/www/blah/blah) or relative to the installation.
Note: no trailing slash
#$storageurl="
http://my.storage.server/filestore"; # Where the
storagedir is available. Can be absolute (
http://files.example.com) or
relative to the installation. Note: no trailing slash
Regards,
Stefan