ULTRIX-32 Guide to System Backup and Restore

This document, the "ULTRIX-32 Guide to System Backup and Restore" (Version 3.0), provides comprehensive information and procedures for backing up and restoring files and file systems on the ULTRIX-32 operating system. It is primarily intended for system managers and maintainers who are familiar with ULTRIX commands and system configuration.

The guide covers:

1. Backup and Restore Methodologies and Strategies: Introduces local and remote backup/restore concepts, distinguishing between single-user and multiuser modes, and offers advice on developing effective backup strategies, including incremental backups.
2. Backup Commands and Procedures: Details the use of dump (for file systems, typically in single-user mode), tar and mdtar (for individual files/directories, usable in multiuser mode), and the opser utility (a simplified interface for system maintenance, including local and remote backups). It outlines steps for preparing for backups, such as shutting down multiuser mode, unmounting file systems, and performing consistency checks (fsck).
3. Local File Restoration: Explains how to use the restore program for interactive and non-interactive recovery of files, directories, and entire file systems. It also provides specific procedures for restoring critical root (/) and /usr file systems after catastrophic events, and how to use tar or mdtar for restoration.
4. Remote Backup: Describes network backup operations in a master/slave environment using the opser utility and rdump. It highlights hardware and system setup considerations (e.g., streaming vs. start/stop tape drives, disk space, and network configuration files like /etc/hosts and .rhosts), and outlines "staging area" and "direct backup" methods.
5. Remote File Restoration: Details the use of the rrestore program for restoring files and file systems over a network, including interactive and non-interactive methods, and specific procedures for remote restoration of the root (/) and /usr file systems.

The document also includes an appendix on device mnemonics for system configuration.