Our bugtracker-DB is around 1.6GB - most of the size is made by the attachments.
Now we would like to export them.

As an administrator a I call the http://Path-to-mantis/admin/system_utils.php page and press the "Move the Attachment to Disk"-Button.
(I know, that I have to change the entry in the config_defaults_inc.php
$g_file_upload_method = DISK;
and set the path for the export
$g_absolute_path_default_upload_folder = 'd:\export';
)

After some minutes, the memory of my machine is extreeemly high (more then 1,8GB!) and then I get the following error:

Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 4913797 bytes) in D:\webserver\htdocs\mantis\admin\move_db2disk.php on line 128

This gives me the following problems:

a) How can I avoid this memory-problem and 'allocate' more space?
b) Why is my configured export-path 'D:\export' ignored?
c) From the 4700 attachments only 671 are really written to the above (long) path, then the memory-error occurs. How can I export the missing 4100 files?