Ticket #2957 (new enhancement)
[Suggestion] ISZ Compressed ISO Support
|Reported by:||claymen||Owned by:|
|Version:||VirtualBox 2.1.0||Keywords:||ISZ Compressed ISO|
ISO files can be quite large especially with many application install discs. As such to improve the storage footprint of these compressed ISO's can be of use however VirtualBox does not support this format.
The specification is available on the following address. http://www.ezbsystems.com/isz/iszspec.txt
It is open to use and is currently supported by a number of 3rd party tools and has so far been quite useful.
Here are some example compression levels.
Windows Server 2003 R2 ISO:120mb ISZ:88mb Saving:26%[[BR]]
Visio 2007 ISO:279mb ISZ:238mb Saving:15%[[BR]]
Office 2007 Enterprise ISO:641mb ISZ:502mb Saving:19%[[BR]]
As you can see there are reasonable savings to be had and even if we go based on say about 10% that's still quite substantial when you are talking a few hundred gig of OS or Software install ISO's.