Recently we have had one of our users request a limit increase for attachements in our confluence install. Has anyone experienced any issues with attachments in the 300MB and up range?
Is there an upper limit before DB storage becomes a problem?
I'd be careful about allowing attachments bigger than 10 Mb - it imposes discipline on users. To mitigate this we have we temporarly increase the limit on request for valid purposes.
Where have had a few cases of really big files - eg, 200 Mb training videos - we use the tomcat sever rather than Confluence to handle them.
Create a directory under the the Confluence app directory eg \confluence-3.4.9-std\confluence\bigfiles Grant access to selected users to put the big files files there.
The files can them be linked via a confluence url, eg, http://confluence.ourcompany.local/bigfiles/x.txt or via a link on a Confluence page like //bigfiles/x.txt (in square brackets)
If you want to go one stop further you can use a directory outside the Confluence structure, see eg http://gandhim.wordpress.com/2008/01/31/tomcat-55-virtual-directory/ We didn't bother with this because we add the big files ourselves and we trust ourselves. Content type controls are also possible to prevent server side executables from being added.
I'm sure you've got your reasons, but I can't help thinking that this is just a bad idea. If this is a popular download it will have a negative effect on the performance.
Uploading a 300MB+ file through a web browser is unlikely to be fruitful. Admittedly you could try using WebDAV, which will work but that doesn't have the greatest user experience.
There may be an upper limit imposed by your database but its going to be so big that I doubt its going to be a problem.
Confluence is not going to handle large attachments perfectly, so you may need to tweek settings to disable indexing (for example) for these kinds of files.
To increase the attachments size you go to the general configuration screen in your administration section and edit the "Attachment Maximum Size" property.
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