Caldera BACKUP.UNET Customization and Reference Guide

CHAPTER 1 BACKUP.UNET Commands

Performance Features
Uses Peer-to-Peer Architecture
Compresses Files for Storage on Backup Media
Multi Process Architecture Provides High Speed Backups
Permits Volumes to be Written Without Verify Rereading
Network Service Features
Flexible Backup Configurations
Multiple Backups Per Volume
Initiate Operations From Any System
Multiple Systems Can Share a Central I/O Device Pool
Multiple Systems Can Share Backup Media Pools
Flexible Configuration
Reassign I/O Service From Host to Host
Change Privileges Simultaneously Across the Network
User Level and System Wide Restore Facilities
Usability Features
Consistent Interface Across Platforms
Choice of Tape Formats
Backup Searching
Secure Confidential Data for Transmission and Recording
Support for Different I/O Devices
Automatically Manage Backed Up Data

CHAPTER 2 BACKUP.UNET Concepts

Backing Up in a Network Environment
Networks
Network Protocols
Local Area Network
Distributed File Systems
Participating Systems
System Overview
System Hosts
Backup Catalog
Media Management
Backup Volume Labeling
Volume Table
Backup Segments
Media Pools
Ensuring a Reliable Backup
Reusing Backup Volumes
Backup Catalog
Restoring Files
BACKUP.UNET Processing
The Backup Process
The Restore Process
Accessing BACKUP.UNET
From the Command Line Interface
From the Graphical User Interface

CHAPTER 3 Managing Privileges

Privilege Hierarchy
User
Operator
Administrator
Operator/Administrator
How Privileges Work
ALL Host Designation

CHAPTER 4 Backing Up Data

Why Backups Are Necessary
Preventing Loss of Data
Restoring Previous Versions of Files
Archiving Outdated Files
How Often to Backup
Running Automatic Backups
Selecting What to Back Up
Using a Worklist
Types of Backups
Full Backup
Incremental Backup
Special Incremental Backup
Backup Format
File Name Size Limits
Backing Up Symbolic and Hard Links
Backing Up Raw Partitions and Special Device Files
Using Multiple Backup Streams
Setting Up Streams
Specifying Multiple Backup Streams
Using Device Reselection
How Device Reselection Works
Specifying Device Reselection
Restricting a Backup to One Device
Turning Off Device Reselection
Specifying a Provider
Specifying a Device
Scheduling Automatic Backups
Setting Up a Schedule for Automatic Backups
Using the Append Feature
How Append Works
Specifying Append
Using the ANSI Backup Format
Specifying the ANSI Backup Format
Using Compression
Compression Guidelines
Specifying Compression
Using Encryption For Data Security
Encryption/Decryption Filter
Encryption Guidelines
Specifying an Encryption Filter
Splitting Files Between Volumes
Specifying the Split Option
Preparing For System Recovery
Review Your Worklist
Backup Control Volume

CHAPTER 5 Using a Worklist

How It Works
Default Worklist
Modifying Your Worklist
Worklist Guidelines
Using Keywords in the nbkWORKLIST File
Format
Keywords
Considerations For Including Data
Considerations For Excluding Data
Considerations For Specifying Streams

CHAPTER 6 Restoring Data

Required Permissions
Restore Guidelines
Restoring Large Files
Restoring Symbolic Links and Directories
Restoring Raw Partitions
Restoring Files Without Using BACKUP.UNET

CHAPTER 7 Customizing the nbkMSGS File

Changing Configuration Parameters

CHAPTER 8 Using Processing Escapes

How Processing Escapes Work
Default Shell Scripts
Additional Shell Scripts
Exit Codes
Creating and Implementing Your Own Processing Escape
Arguments
Default Shell Script
Arguments
Default Shell Script
Arguments
Arguments
Default Shell Script
Arguments
Arguments
Arguments
Arguments
Arguments
Arguments
Default Shell Script
Arguments
Arguments
Default Shell Script
Arguments
Default Shell Script
Arguments
Default Shell Script
Arguments

CHAPTER 9 Managing Backup Volumes

Backup Volumes
Media Type Files
Adding New Volumes
Computing Volume Capacity
Volume Label Information
Blocking Factor
Block Size
Byte Swap

CHAPTER 10 Managing Media Pools

Media Pools
Assigning a Poolmaster
Binding a Pool to a Host

CHAPTER 11 Recycling Backup Volumes

How Recycling Works
Automatic Recycling
Manual Recycling
Recycle Script
Default Recycle Script
Recycle Script Format
PRESERVE Statement
Format
Definitions
OFFLINE Statement
Format
Definitions
Example
EXIT and QUIT Statements
Automatic Recycling
Recycling and the First-Ever Backup
Using the Default Recycle Script
Modifying the Default Recycle Script
Usage Notes
Manual Recycling
Example
Offlining Backup Information
Automatic Offlining
Manual Offlining
Onlining Backup Information
Listing Catalogs and In Use Volumes
Recycling and the Append Feature

CHAPTER 12 Managing BACKUP.UNET Catalogs

Considerations For Using Catalogs
Disk Space Considerations
Catalog File Structure
Contents of the nbk-TABLES Directory
Controlling Catalog Storage Space
Offlining Catalog Information
Onlining Catalog Information
BACKUP.UNET Table Repair Procedures
Checking Table Integrity
Rebuilding a Corrupted Index
Repairing a Faulty Index

CHAPTER 13 BACKUP.UNET Utility Reference

dbcheck
Usage
Comments
Arguments
Example
NBKckkey
Usage
Arguments
Examples
NBKdb_build
Usage
Arguments
Example
NBKdb_index
Usage
Argument
Example
NBKfilldb
Usage
Arguments
Example
NBKdb_fixup
Usage
Example
nbk.sqztbl
Usage
Arguments
Example

CHAPTER 14 BACKUP.UNET Daemon Reference

Backup/Restore Processor
I/O Provider
Syncro Server
FRP
NWP
DDS
BCP
IOD
NBKBAT
maint.unet
nbk.WLI
nbk.SORT
nbk.LSR
VTUP
nbroadc

CHAPTER 15 BACKUP.UNET Home Directory Reference

Subdirectories in the BACKUP.UNET Home Directory
nbk ESCAPES
nbk TABLES
nbk TYPES
Files in the BACKUP.UNET Home Directory
nbkbackupARGS
nbkdeviceARGS
nbkLOG
nbkLOG-1
nbk.LSR
nbkMSGS
nbk.opmessage
nbkPARTITIONS
nbkRECYCLE
nbk.WLI
nbkWORKLIST

CHAPTER 16 System Recovery

Recovering Large Files
Pre Recovery Instructions
Performing a Full System Recovery

CHAPTER 17 Using Standard UNIX Utilities to Recover BACKUP.UNET Tables