** Running Roon Core on iMac 27 with 3Ghz i7, 32GB Ram, 1TB Fusion Drive All media referenced in this post has been consolidated and scanned from single external USB drive, in a deep/messy folder structure (see below). **
My apologies in advance for the length and number of questions/issues covered in this one post. Bottom line, we need more detailed documentation and work-flow recommendations for using the “Export…” function especially for large libraries.
I have been intensely grooming a 100,000+ track lossless (ALAC/FLAC/WAV) library for the past 45 days. The source of these files include previous music server exports, downloads, CD Rips, etc. The library “on disk” was a mess and full of duplicates, partially tagged, multiple formats, lots of “various artists albums”. You name it.
I have SUCCESSFULLY invested 200+ hours of tedious work in cleaning up the library within Roon and intend to perform a full library export to new external disk, with the specific goal of outputting a cleaned up version of my library / files on disk. ( I could write a book on this adventure and now consider myself a POWER ROON USER as I believe i have exercised EVERY single feature, numerous repeated 1000’s of times)
Now the real question(s);**
I have read every article/post/thread i can find on “Exporting”, however there does NOT appear to be any detailed documentation or descriptions of exactly how export works or a good work flow to use when preparing for a “whole library export” and/or re-import If I have missed an existing reference, please point me in that direction, otherwise, here are some of my more specific questions about using “Export”, that I have not found good references on;
What is the EXACT behaviour of “Clean up duplicates”? Does it only prevent export of EXACT duplicates from the same album ID?. This is not discussed anywhere I can find.
I have read that performing very large exports (I will be doing about >80,000 track in total) can be problematic even on a high-performance rig such as mine. Is there a difference in performing multiple smaller exports vs. exporting entire library? (e.g. Albums view / select all). I would assume that certain duplicate detection logic, etc might be affected if not operating on full data-set. I was thinking about doing export batches, for example; “Album View/sort by title”, Select all albums beginning with letter “A”, perform export, then select all albums beginning with letter “B”, perform, export, etc. etc.
Any tips here ?
Can you detail how export works with respect to overwriting existing files (if same content is exported) vs. when files might be duplicated on disk?
When might exported files cause files on target export disc be deleted.?
I noted in a quick test that a various artists album that had been un-intentionally split into two albums exported into two separate folders (one for each portion of the album). After I merged the albums in Roon library so that I had one album and re-exported, I ended up with a single album/folder (a good result), but begs some questions about what happens under what circumstance, especially in what cases, might files be moved, deleted, duplicated and/or orphaned.
Lastly and very importantly, any guidance, best practices, etc on how I should plan to be able to use my fully exported library files (to new volume) as my new master library. e.g. rescan my export.
I have read numerous posts that seem to indicated mixed results when doing this.
I have made many 1,000’s of “edits”, including a lot of “Fix Track Order”, etc, album merging, multi-disc fixing, album art additions, etc. Lots of work to get albums AMG identified and full meta-data.
When I complete my grooming I will have a working library that is VERY clean/perfect within Roon but will be a MAJOR mess on disk. I am hopeful that I can be successful at the whole “export” “re-import” process without having to go back through all of the grooming i have done.
Can you describe what data is preserved when simply re-scanning files sets that have been moved (via export). Does Roon write AID’s or TID’s into exported files to help with recognizing files. What is preserved in Roon DB / Cache that will help with library reconstitution, etc.
Thanks in advance for any insight you can provide here.