However, it is more difficult to determine the size of a free block using this method. Larger allocation units are favored when pursuing transfer efficiency. With larger allocation blocks, less time is spent beginning the reading process. Larger allocation units are also favored due to the fewer number of file indices needed to keep track of them. Smaller allocation units are favored when pursuing storage efficiency.
Less memory is wasted in smaller files, especially when the contents of a file are small.
Overall, transfer efficiency is a more important factor right now. As a result, larger allocation units are generally used. One means of organizing on-line data storage is through the use of directories . Delete a file from a directory. Rename a file.