File with VMDK extension is a VMware virtual machine disk file. Such file contains files and folder that comprise a virtual disk created using Vmware software. Single VMDK file can contain information about one or more virtual disks.
After converting the file to the new format, you will be able to use other programs to support it. Keep in mind, however, that the SV2I file after converting to VMDK may differ slightly from the original. The most important information should be kept, but if you want the file after conversion from SV2I to VMDK to be the same, you have to do this carefully and choose the proper application from the list below.
There is no guarantee, of course, that the conversion will come up to all your expectations, but it will certainly help you. If, after all, the effect of converting SV2I to VMDK does not meet your expectations, you can simply try to find on the Internet a different version of your file in SV2I format, properly converted to a VMDK file by someone else. If this fails, use the information provided in the further part of the website.
Unfortunately, if after performing the two previously described steps (trying to find your SV2I file converted by someone else, and the attempt to convert it to VMDK on your own) you still have a problem with your file, then there are only a few solutions left. You can once again try to find and install an application that can open the SV2I file in its original format (without conversion to VMDK file). Such a solution will be difficult to implement, but it certainly will give the best result.