The guest operating system is entirely unaware that the disk is nonpersistent. Some disk operations may even be faster on a Workstation nonpersistent disk than on an actual disk. However, the location of the redo log file can be changed in the Configuration Editor under Miscellaneous. The Configuration Editor allows you to specify where the disk file is located on the file system. A disk file has a .dsk extension for virtual disks.
Plain disks have a .pln extension, and the extents of the plain disk have a .dat extension.
Log files are used to save blocks that the virtual machine modifies during a session. The log file for a nonpersistent disk is not saved at the end of a session, while the log file for an undoable disk is saved. As described above, the log file for undoable disks is called the redo log , and the user is able to decide whether the log file should be saved or not. REDO and is created by default in the same directory as the .pln file. By default, log files for raw disks are located in the same directory as the virtual machine configuration file.