Formerly, the size of volumes were limited by the RAR file naming scheme, which produced extensions .rar, .r00 and so on through .r99. This allowed for 101 volumes in a single release before the naming switched to s00, s01 and so on. For example, a DVD-R image (4.37 GiB), split into 101 pieces, produces volumes smaller than 50 MB. The new RAR naming format, name.part001.rar, removes the limit, although the individual split archives continue to be 50 MB for historical reasons and because the old RAR naming format is still being widely used.