Open System Services Management and Operations Guide (G06.29+, H06.07+)

Managing OSS Files
Open System Services Management and Operations Guide—527191-005
6-12
Considerations
•
The pax utility does not support labeled tapes and imposes requirements for
unlabeled tapes.
•
The pax utility does not support filenames longer than 100 characters in archives
using its default USTAR format.
The pax utility can be used when any of the following conditions exists:
•
The system that will be restored (target system) might not have the same node
name or node number as the system being backed up (source system).
•
The operating system release version update (RVU) of the target system might not
be the same as that of the source system.
•
The disk volume names of the target system might not be the same as those on
the source system. (The storage-pool files and any OBEY files used on the source
system will still need to be modified to be used on the target system.)
Considerations
For all backup activities described in this guide, the pax utility must be run at a time
when no updates or changes are being made to the OSS files that are being saved.
Multiple copies of pax output from a backup activity should be saved in case of media
failure.
You cannot use the following media or devices for an OSS backup from the OSS
environment:
•
Storage Management Foundation (SMF) logical volumes
•
Tape libraries
You cannot perform remote backups of OSS files, directories, or file systems directly.
For information about remote backups, see Backing Up OSS Files to Other Expand
Nodes on page 6-22.
Guardian Files and the pax Utility
You should not use the pax utility to back up or restore files in /G. Such files should be
backed up and restored using TMF or a version of Backup/Restore. See Backing Up
User Files on page 6-15.
Unless otherwise noted, the pax utility makes no distinction between Guardian and
OSS files.
If the pax utility cannot process a specific /G file, pax returns a diagnostic message
and an error value from the underlying program interface. If possible, pax continues to
process the other files.
Note. You cannot restore an OSS file that is larger than approximately 2 gigabytes to a system
running an RVU that does not include support for OSS large files.