Hi - A research group that I'm in has been maintaining a shared repository of publications via a Zotero group library. Two years into the project, all the pdf attachments in the group library have caused it to grow to substantial size (> 5 Gb). We've now run into a problem because a lot of people in the research group all have accounts on a shared local server. Since Zotero on this server was set up with the preference to "sync attachment files in group libraries using Zotero storage" turned on, the pdf attachments in the Zotero group library have been replicated into many local copies on the shared local server. At 5 Gb in the library times a couple dozen members in the research group, this is now adding up to a substantial impact on the local server. A couple questions, then:

1) Is there a way to purge en masse the local copies of the pdf attachments? One can uncheck the "sync attachments in group libraries..." preference, but it appears that will affect only future retrievals to the local library via sync, and not alter the current state.

2) If one was to open the group library in one's own Zotero workspace and delete the attachments individually from local storage, how does one ensure these aren't also deleted from the library on the Zotero group server?

Thanks, Allan Hollander