GUID / UUID v2 is a rarely used variant derived from GUID / UUID v1 and was originally intended for DCE (Distributed Computing Environment) security systems. It

GUID / UUID v2 is a rarely used variant derived from GUID / UUID v1 and was originally intended for DCE (Distributed Computing Environment) security systems. It modifies the time-based v1 layout by replacing part of the identifier with a local domain and a local identifier, such as a POSIX UID or GID.