This is because the log controlfile will be most updated and unnecessary writes to disk will be avoided.
这是因为日志控制文件将是最新的，并将避免对磁盘不必要的写入。
2
Because a version control system does not store each new version in its entirety, it requires less disk space for data storage than a standard file system.
由于版本控制系统无需完整地存储每个新版本，因而用于数据存储的磁盘空间比标准文件系统要少。
3
The Render method of the Web service is a good alternative when you want more control, for operations such as displaying the results in a picture box or saving the file directly to disk.