| Issue 8: | Zip File Size Limit (4GB) | |
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Is there a "file size" or "number of files" limitation on this software? I have tried to backup my photo files twice with the same error...see below. File size is about 7.163GB WinRAR Error: ! C:\Backup\My Photos_2009-01-03.zip: Unexpected end of archive Windows error: The compressed (zipped) folder is invalid or corrupt. Submitted by Larry. |
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Jan 04, 2009
There is no hard limit to the number or size of files Snap Backup can handle. That being said, Snap Backup has not been rigorously tested on large file sets. My guess is that the number of files is probably not an issue (I've done backups with lots of smaller files). The issue is probably with the overall size of the resulting backup file. I believe the zip format originally did not support files larger than 2GB. I think the limit is now 4GB, but it should be extended soon. More Info: http://en.wikipedia.org/wiki/ZIP_file_format#Technical_information http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4681995 Workaround: Use the profiles feature (File --> Multiple Profiles --> On) in Snap Backup to define multiple backups enabling you to break your zip file into two or three smaller zip files.
Status: Accepted
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Mar 12, 2009
What are the size limitations to the backup files? I've tried saving Outlook PST files, (2GB), and also larger database files (20GB). The database files always complete with a small fraction of the size (20 > 3GB) but when I try to open the ZIP file to confirm the data, it opens empty. Submitted by Matt. |
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Aug 04, 2009
A warning message is now displayed if the zip file is larger than 3.8 MB (allow for 0.2 MB margin of error). The new Zip64 format gets around the 4 GB limitation. Java 7 (release date early 2010?) is slated to support Zip64. |
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