Home Forums .NET libraries Xceed Zip & Real-Time Zip for .NET How big is the zip file that xceed zip can produce?

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    Hello:
    I am wondering whether there is a upper limit of the zip file size that xceed can produce.
    The max zip file I have created successfully is 2.3Gb from two 1.5Gb iso and one 300mb iso file, while it fails to compress three 1.5Gb iso files and left 2 temp files in the temp directory, each of them is 1G size. So I am wondering how big is the zip file size that xceed is able to produce.

    Thanks and best regards

    Imported from legacy forums. Posted by chrono (had 2251 views)

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    Here is an except form the help documentation :

    Zip64 zip file format

    The Zip64 zip file format is the 64-bit counterpart of the zip file format that is used by PKZIP 4.5 and up. It supports up to 2^64 -1 files within a zip archive as well as files that have a size greater than 4GB for a zip file size that can reach up to about 18 million terabytes ( more precisely, 2^64 -1bytes).

    Split or spanned zip files can have a maximum of 2^32 -1 parts.

    (<a href=”http://doc.xceedsoft.com/products/XceedFileSystem/Zip64_zip_file_format.html”>http://doc.xceedsoft.com/products/XceedFileSystem/Zip64_zip_file_format.html</a&gt;)

    However, limits of the system on which you are procesing the files may be much less than what is specified in the documentation.

    Imported from legacy forums. Posted by André (had 3184 views)

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