These are options of how files should be restored, and control file names, and sometimes, file locations.
CD-ROMs (IOS9600 and Joliet) store a version number as part of the file name. Typically this number is not required when saving to a Windows system, and this option (by default) removes the extension number
Limit file name length to be Joliet compatible. CDs and DVDs have certain limitations on file name lengths. This option will automatically ensure that all file names are compatible with writing to a CD. It obviously has to reduce the file name, and initially it will do it by removing spaces from the file name. If this is not adequate, it will start removing characters from the middle of the name, leaving the first characters and final characters unaffected. When it is necessary to reduce the length of a subdirectory, it will always start with the last subdirectory in the chain.
Move files that fail the signature into the …\sig_fail directory. Most common file types have a signature that is recognizable. For files that fail this test, they can be separated into a different subdirectory for later investigation.
Place files into directories for easy burning. This is an option that is useful when restoring from hard disks, and the output is required on DVDs (or CDs). The files are split into subdirectories under headings of DISK1, DISK2 etc. Each directory will be filled to an approx capacity of a DVD (or CD). Files which are bigger than the capacity of the output media, will be stored in a separate subdirectory for manual processing, for instance they could be Zipped. When creating these DISK directories, all subdirectories are retained. This can lead to a problem of file names getting too long – in which case they will be truncated – and so the output path should be as near the root as possible, and as short as possible. Good examples would be F:\R1 F:\R2. When the DVD option is selected, files directories will be filled to about 4.7GB, for CDs, approx 650M. Dual layer DVDs can also be split.
Save original files when a fix has been made. Certain files are scanned for integrity when restored from unallocated space. This is an option to retain an original file as well as the fixed file. By deleting the original file, at times a significant amount of disk space may be saved, but for forensic investigation, this may not be an important criteria
Retain Logs period. Logs grow with use. This option will allow users to automatically delete logs after a period of time – by default this is 3 months.