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https://issues.apache.org/jira/browse/COMPRESS-196?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13424783#comment-13424783
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Sebb commented on COMPRESS-196:
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There are two different ways of splitting a zip file.
The simplest way is to break up the file into chunks regardless of internal
structure ('binary splitting').
This is what the stack overflow sample does, and can be used externally with
any Zip application.
Some Zip applications may support it natively (looks like 7-Zip does, but I've
not double-checked).
Some Zip programs also support disk spanning (originally for use with floppy
disks) and file splitting (presumably for e-mail size restrictions). AFAICT,
the contents in each case are identical, but the chunk locations and names are
obviously different. [Spanning uses the same file name on all disks, but
different volume names].
There are some rules about where the files can be split, and the magic bytes
may be different, so this is harder to implement than simple binary splitting.
> show how one large of e.g. 8MB can be zipped into 3 zip-parts of e.g.
> compressed 1 MB each
> ------------------------------------------------------------------------------------------
>
> Key: COMPRESS-196
> URL: https://issues.apache.org/jira/browse/COMPRESS-196
> Project: Commons Compress
> Issue Type: Improvement
> Reporter: Ralf Hauser
>
> examples like
> http://stackoverflow.com/questions/243992/how-to-split-a-huge-zip-file-into-multiple-volumes
> only show how multiple small files can be zipped into a few compressed parts
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