I want to set a retention policy (DB Settings -> Information Management Policy Settings) on a discussion board, but does the attachment get deleted as well?
Also, I have a discussion board retention policy right now that isn't working properly. The criteria is:
Last Updated + 30 days
Delete
There are plenty of dicussion items that are long past "Last Updated". Any ideas why?
It is a known (but not very well documented) issue that discussion board items do not expire properly when setup with an Information Management Expiration policy. The usual symptom is that replies to a post expire, but the root post never will.
The workaround is to setup a Disposition Approval workflow and have that delete the items.
To answer the main part of your question - yes, when the item expires, the attachment should also expire.