: Those would be the individual files inside the lucene index, The "index" you : want to backup is the entire 'solr/data/index' directory. I imagine you want : to think of that directory as an atomic unit, the whole directory at once : describes your index, not the individual files in it.
Correct. The filenames are segment identifiers that "increment" as the index is modified. the directory *is* the index. : Those names will change every time an 'optimize' command is run. or anytime a commit is done if a segment merge happens. -Hoss
