Thanks for a great CCC/SD comparison.
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"Snow Leopard introduced extensive file compression techniques. SD had to come out with a patch to keep the files compressed in the backup. Decompression is done at a very low level in the HFS+ filesystem, and is normally completely transparent to "ordinary" tools like rsync, which see only the decompressed data. Since rsync does not support preserving compression, CCC will still de-compress compressed files during a file-level copy. (A sector-level copy will preserve compression, but I don't trust sector-level copies.)"Hmmm... That is apparently contradicted by
what I reported here.Unfortunately, I can't confirm that that behavior still holds true, because my compressed files have become decompressed somewhere between then and now. (I'll do a clean SL install and test again, but don't hold your breath.)
