SABnzbd Forums

Hello.

Here's my situation: I've downloaded a collection with another software and some files are incomplete. There's not nearly enough PAR2 files in the collection to repair it. I'd like to know if SABnzbd can scan the incomplete files that I have and then download only missing blocks. I could use a different, more reliable server to get those.

SABnzbd is designed for a completely automated flow.
It's not very good at helping you with manual repairs.
In fact, hardly any other tool will do what you ask for: add individual articles to incomplete files.
Newsleecher is better at the low level stuff, but even then it's a challenge.

You mean Newsleecher can do this? If not, do you know of any software that can?

No, not really.
You could edit the NZB file to have the files in there contain only the missing articles.
You end up with partial files that you need to rename.
Feed all these files (old and new) to QuickPar and it may be capable of repair.
Only problem is that par2 uses the concept of "blocks" that usually doesn't match single articles.
The short story: it is way to complicates and personally I wouldn't even try.
If you're not handicapped by download caps, just download it all again, with an additional backup server.
BTW: make sure the backup server is not affiliated with your primary server.
(There are only a limited amount of core Usenet companies, but they have many resellers).