5. Maintenance › 5.7 Activating CA MICS USS and HFS Support › 5.7.2 Prerequisites › 5.7.2.1 Security

5.7.2.1 Security

Prior to using USS services or accessing HFS files, a user
must be authorized by the data center's security system (for
example, CA Top Secret, CA ACF2, or RACF) by having the OMVS
extension added to the user ID.

The CA MICS administrator should have authority to create,
read, or delete anything within the CA MICS Root Directory
structure.

Additionally, the CA MICS administrator should also have
access to a UNIX System Services (USS) session either through
a Telnet connection, OMVS using TSO, or/and ISHELL (ISPF USS
Shell).

CA MICS "end-users" may require similar authorization, though
their access may be limited to "read-only".