The OpenTP1 file systems can be created on character type special files or ordinary files.

To create the OpenTP1 file systems on character type special files, disk partitions dedicated to the system must be allocated. These partitions must not be mounted. If the systems are to be created on ordinary files, disk partitions need not be allocated.

An archive-journal source node must have two kinds of OpenTP1 file systems, one for the system and the other for users. For creation on character type special files, two different disk partitions, one for the system and the other for users, must be allocated. An archive-journal target node need not have the OpenTP1 file system for users.

The character type special files or ordinary files on which the OpenTP1 file systems have been created are called OpenTP1 file system areas.

To prevent unauthorized users from accessing the OpenTP1 file system areas, their owners and access right must be defined as described in the following table. OS commands are used to define the owner and access right.

Table 7-1 OpenTP1 file system area owners and access permissions

Type of OpenTP1 file system area	Owner		Access permissions
	User ID	Group ID	Owner	Group	Others
For system	OpenTP1 administrator	OpenTP1 group	rw (readable and writable)	r- (readable)	r- (readable)
For users	OpenTP1 administrator	OpenTP1 group	rw (readable and writable)	rw (readable and writable)	r- (readable)

Note

OpenTP1 file systems for the system and for users can be allocated in the same area. In such a case, access permissions must be for users.