-nice tar --create --gzip --dereference --directory=$T --file=$T/$B lists-$D
-nice rsync $T/$B backup::backup
+nice tar --create --dereference --warning=no-file-changed --directory=$T lists-$D | nice gzip --rsyncable -9 > $T/$B
+nice rsync --preallocate --fuzzy $T/$B backup::backup