Private disks, in contrast to public volumes, must be requested separately for file processing. They can be used exclusively by one job or be shared by several jobs which run simultaneously.
Normally the operating mode is “shareable”.
Exclusive use for one user job can be selected by means of the SECURE-RESOURCE-ALLOCATION command. With the aid of special commands, the operator can disable the individual allocation modes.
File processing on private disks is exactly the same as for the files in an MPVS environment.
If a user without remote catalog access (RCA) wishes to access a file created by another system, he/she must first report this file to his/her own system (TSOSCAT) by means of a FILE macro or IMPORT-FILE command.
By means of the operand VTOC=YES/NO in the FSTAT macro or INFORMATION=... in the IMPORT-FILE command, the user can have the VTOC catalog entries of the private disks displayed instead of the TSOSCAT entries. The VTOC entry of the private volume replaces the corresponding TSOSCAT entry.