In general, the HIRO will not create a single zip file larger than 1.5 GB in size because files of that size can often cause problems when you attempt to open them (particularly with older or 32-bit operating systems). However, it is not uncommon for users to request image data in amounts that would exceed this size even with the best compression software available. As a result, the HIRO takes advantage of a zip feature known as "volumes" (also known as a split or spanned archive).
7zip Split Zip File Not Implemented
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When zipping large amounts of data, the HIRO will use its archiving software to split the large zip file into several volumes. Each volume has the same maximum size; once that size is reached for the first volume file a new volume file is created. This process continues until all of the data has been compressed. For example, assume you have requested a large number of scans and when compressed your data shrinks to 4.75 GB in size. If the HIRO were to provide you with a single 4.75 GB zip file, you might encounter problems when you attempted to open or unzip it (in fact, zip files of this size are impossible to open on 32-bit systems). Splitting the zip file into 1 GB volumes would circumvent this issue, and would look like this:
Although zipping in this manner splits the zip file into smaller files, it is still technically a single zip archive (that is, it is not five individual zip files). To successfully unzip the archive, you will need all the files, and you should only attempt to unzip the first volume (the file ending in .zip.001). Your zip program will automatically recombine the volumes and unzip everything at once. Zipping data in this manner is still considered lossless compression, so all of your data will be intact in its original form.
Unfortunately, the zip utility that is built into Windows cannot unzip split archives. To unzip split archives under Windows, the HIRO recommends the 7-Zip Utility. This free utility is relatively simple to use and can compress and uncompress files in a wide variety of formats. To unzip the example above, you can right-click on the MyImageData.zip.001 file (after you've installed 7-Zip), select the 7-Zip menu, and then choose one of the "extract" options.
Unfortunately, the zip utility that is built into OS X cannot unzip split archives. To unzip split archives under OS X, the HIRO recommends the Keka File Archiver Utility. This free utility is relatively simple to use and can uncompress files in several formats. To unzip the example above, double-click on the MyImageData.zip.001 file after you've installed Keka. The Linux p7zip command line program is also available for OS X. The HIRO is only able to provide limited support for Macs.
To unzip split archives under Linux, the HIRO recommends the p7zip utility. This command line utility is included by default in many flavors of Linux, and is available as an RPM package. To unzip the example above, you would use the following command:
Hitachi provides a utility called "TUF Split, File Utility" which automates the splitting and upload of large files to TUF. This is the easiest and most automatic method for uploading a large file to TUF without following a manual procedure. More details about the tool are at:How to Download and Install TUF Split File Utility If you can not use the Automated tool, we provide the manual process bellow to split files into 2GB or smaller chunks.
...will convert a split archive to a single-file archive. Copy mode will convert stream entries (using data descriptors and which should be compatible with most unzips) to normal entries (which should be compatible with all unzips), except if standard encryption was used. For archives with encrypted entries, zipcloak will decrypt the entries and convert them to normal entries.
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zip is a compression and file packaging utility for Unix, VMS, MSDOS,OS/2, Windows 9x/NT/XP, Minix, Atari, Macintosh, Amiga, and Acorn RISCOS. It is analogous to a combination of the Unix commands tar(1) andcompress(1) and is compatible with PKZIP (Phil Katz's ZIP for MSDOSsystems).A companion program (unzip(1L)) unpacks zip archives. The zip andunzip(1L) programs can work with archives produced by PKZIP (supportingmost PKZIP features up to PKZIP version 4.6), and PKZIP and PKUNZIP canwork with archives produced by zip (with some exceptions, notablystreamed archives, but recent changes in the zip file standard mayfacilitate better compatibility). zip version 3.0 is compatible withPKZIP 2.04 and also supports the Zip64 extensions of PKZIP 4.5 whichallow archives as well as files to exceed the previous 2 GB limit (4 GBin some cases). zip also now supports bzip2 compression if the bzip2library is included when zip is compiled. Note that PKUNZIP 1.10 cannot extract files produced by PKZIP 2.04 or zip 3.0. You must use PKUN-ZIP 2.04g or unzip 5.0p1 (or later versions) to extract them.See the EXAMPLES section at the bottom of this page for zexamples ofsome typical uses of zip.Large Archives and Zip64. zip automatically uses the Zip64 extensions when files larger than 4 GB are added to an archive, an archive containing Zip64 entries is updated (if the resulting archive still needs Zip64), the size of the archive will exceed 4 GB, or when the number of entries in the archive will exceed about 64K. Zip64 is also used for archives streamed from standard input as the size of such archives are not known in advance, but the option -fz- can be used to force zip to create PKZIP 2 compatible archives (as long as Zip64 extensions are not needed). You must use a PKZIP 4.5 compatible unzip, such as unzip 6.0or later, to extract files using the Zip64 extensions.In addition, streamed archives, entries encrypted with standard encryption, or split archives created with the pause option might not be compatible with PKZIP as data descriptors are used and PKZIP at the time of this writing does not support data descriptors (but recent changes in the PKWare published zip standard now include some support for the data descriptor format zip uses).MacOS. Though previous Mac versions had their own zip port, zip supports MacOS as part of the Unix port and most Unix features apply. References to "MacOS" below generally refer to MacOS versions older than OS X. Support for some MacOS features in the Unix MacOS port, such as resource forks, are expected in the next zip release. For a brief help on zip and unzip, run each without specifying any parameters on the command line.
Though primarily thought of as a .rar file extractor, this application works with a range of compression file formats, including .zip files. It can be set as the default application to use with a zip file, if required. It also works with tar.gz, 7zip, iso, and a number of other formats. 2ff7e9595c
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