When a single archive (like a .7z file) is too large for certain storage limits or transfer methods, users can "split" it into smaller chunks. These chunks are numbered sequentially (e.g., .001 , .002 , .003 ).
The name appears to be a unique, machine-generated identifier. These types of names are commonly used in: 54T064EU4I.7z.002
Because this is part .002 , it cannot be opened by itself. It contains a middle segment of the original data. To access the contents, you must have all parts—starting with 54T064EU4I.7z.001 —in the same folder. When a single archive (like a
Unique GUIDs (Globally Unique Identifiers) ensure that no two backups accidentally overwrite each other. 54T064EU4I.7z.002