Expert Mode: Compression, Advanced Settings
Advanced Compression Settings
| · | Create self-extracting Zip files: If ticked then a self-extracting Zip file will be created. Please note that self-extracting Zip files do not support Unicode filenames. A self-extracting Zip file is an executable program, that when run, will extract its contents. The benefit is that a 3rd party Zip program is not required to uncompress the files. |
| · | Enable disk spanning (note that this is not possible if unattended): If you are performing a backup to a CD/DVD, floppy-disk, etc. then it may be that the backup cannot fit onto one disk. If this option is enabled then the Zip file will be split across each disk. An important point to note about spanned/split Zip files are that they cannot be modified once created. The existing Zip file will be automatically deleted and rebuilt. For this reason you may wish to use a Fast Backup profile that does full and incremental backups. |
| · | Limit the disk usage toà: When spanning the amount of disk space to use on each disk can be set here. |
| · | Create a multi-part Zip file with each part having the maximum size ofà: An alternative to disk spanning is to split a Zip file into several files. These separate parts can then be copied manually to a disk, FTP server, etc. An important point to note about spanned/split Zip files are that they cannot be modified once created. The existing Zip file will be automatically deleted and rebuilt. For this reason you may wish to use a Fast Backup profile that does full and incremental backups. |
| · | Filename extension: This option is only available when compressing each file. Enter the filename extension to use for the destination compressed files. By default '.zip' is used. |
| · | Temporary directory: By default, temporary files produced during compression are stored in your standard Windows temporary directory. You can however change this using this option. For example, you may be using a small RAM disk as your temporary directory and so when using compression you would like the temporary files stored on your RAM disk. |
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The naming standard used by SyncBackSE for split/spanned Zip files is different from that used by WinZip and possibly other compression utilities. For example, the following files may be created:
Test.zip Test.z01 Test.z02 Test.z03
If you attempt to open the Zip file using WinZip it will incorrectly report that the Zip file is corrupt. If you wish to open the Zip file using WinZip you must rename the files as follows:
Rename test.z03 to test.zip2 Rename test.zip to test.z03 Rename test.zip2 to test.zip
i.e. the first filename (.zip) must be renamed to the last filename in the list, and the last filename renamed to the first filename (.zip). |
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