It is a 7z split volume . Large archives are often divided into smaller pieces (001, 002, 003, etc.) to meet file size limits for cloud storage, email, or FAT32 file systems [1, 2].
This specific file is not a complete archive . It contains a middle portion of the data and cannot be opened or extracted on its own [4].
The prefix is a generic filename often used for "General System Data" in industrial software (like Siemens STEP 7) or as a shorthand for various game data files [3].
The .003 extension indicates its sequence in the set. For the extraction to work, it must be stored in the same folder as gsd.7z.001 , gsd.7z.002 , and any subsequent parts [2, 5]. How to Use It
Ensure you have every numbered segment of the "gsd" archive (starting from .001 ) in one directory.
Do you have the of this archive, or would you like help identifying what software might have generated this "gsd" file?