Archive files built with Backup2005 Pro use the well known zip file format.
But a standard zip file is limited in size and number of file entries. Standard zip format is not enough to manage a large backup file. Pkzip (owner of Zip file format) has recently developed a new extended zip format called Deflate64.
Backup2005 Pro is able to build archive files using:
·
standard zip file (Pkzip2.04g)
·
Deflate64 zip file
·
Bzip file format.
All these formats are supported by Winzip 8.1 with a limitation for Deflate64. Winzip is unable to open zip file greater than 4GB. Backup2005 Pro can build (and open) files larger than 4GB.
If you run Windows 9x/Me with a FAT32 partition disk use the standard zip file, but you must take care of operating system limitations.
If you select standard zip file and the limitation is reached while backing up, the format is automatically adjusted (if your system supports it).
If you run a true 32 bits Windows system (WIndows NT/2000/XP) and NTFS disk partitions use Deflate64.
Bzip is highly recommended for multimedia files.
Backup2005 Pro supports multi-part files. Archive files can be split into small pieces (on a hard disk) or spanned over multiple media. There is no standard to cut zip files, so spanned files are not compatible with Winzip. But if you need to restore spanned archive files with Winzip you can manually do it. See the FAQ section on the user forum.
The zip file viewer included in Windows XP supports only Pkzip 2.04g, and can't open archive files which include the full path name of the zipped file. Backup2005 Pro, as other backup software, includes the full name of a file. So even archive files built with standard zip format are not opened by Windows XP zip file viewer. If you need a perfect compatibility use the Extract drive from zip file to remove drive letter from the stored file path.
From version 4.1.1.114 the zip engine supports the Winzip AES encryption password (AES 256)