A read-only attribute is assigned to non-root users and their tape device files. If this attribute is not changed, non-root users cannot store data to tape devices. This only affects HP-UX, Linux, and Solaris operating systems.
The open operation fails.
Issue the CHMOD system command to change the read-only attribution for specific tape device files and run the previously failed operation again. See Technote 1321130 for details about resolving this problem: http://www.ibm.com/support/docview.wss?uid=swg21321130