Document revision date: 19 July 1999

Chapter 8
8	Managing Storage Media
8.1	Understanding Storage Media Concepts
8.1.1	Disk and CD-ROM Concepts
8.1.1.1	Disk Terminology
8.1.1.2	Disk and CD-ROM File Structures
8.1.1.3	Comparison of ODS-1, ODS-2, and ODS-5 Formats
8.1.1.4	The ISO 9660 Standard for CD-ROMs
8.1.2	Extended File Specifications on OpenVMS Alpha Systems
8.1.2.1	System and User Disk Support
8.1.2.2	Mixed-Version Support
8.1.2.3	Mixed-Architecture Support
8.1.2.4	Network Support
8.1.2.5	Enabling Extended File Specifications Features
8.1.3	Tape Concepts
8.1.3.1	Record Blocking
8.1.3.2	Multiple Tape Densities (Alpha Only)
8.1.4	Public and Private Disk Volumes
8.1.4.1	Public Disk Volumes
8.1.4.2	Private Disk Volumes
8.2	Allocating and Deallocating Drives
8.2.1	Allocating Drives
8.2.2	Deallocating Drives
8.3	Initializing Volumes
8.3.1	Using the INITIALIZE Command
8.3.2	Using INITIALIZE Command Qualifiers
8.3.3	Initializing a New Volume with ODS-5 Format
8.3.4	Assisting Users in Accessing and Initializing Volumes
8.4	Protecting Volumes
8.4.1	Protecting Disk Volumes
8.4.1.1	Specifying Protection When You Initialize Disk Volumes
8.4.1.2	Changing Protection After Disk Volumes Are Mounted
8.4.1.3	Displaying UIC- and ACL-Based Protection
8.4.2	Protecting Tape Volumes
8.4.2.1	Using the /PROTECTION Qualifier with Tape Volumes
8.4.2.2	Protecting Tape Volumes for Interchange Environments
8.4.3	Auditing Volume Access
8.5	Mounting Volumes
8.5.1	Using MOUNT Command Qualifiers When You Mount Disks
8.5.2	Using MOUNT Command Qualifiers When You Mount Tapes
8.5.3	Assisting Users in Mounting Volumes
8.5.4	Mounting a Volume with Protected Subsystems
8.5.5	Converting an Existing Volume from One ODS Format to Another
8.5.5.1	Converting from ODS-2 to ODS-5
8.5.5.2	Converting from ODS-1 to ODS-2
8.5.5.3	Converting from ODS-5 Files to ODS-2
8.5.6	Modifying Disk Volume Characteristics
8.5.7	Speeding Up Disk Mounting
8.6	Setting Up Disk Volume Sets
8.6.1	Understanding Disk Volume Sets
8.6.1.1	Guidelines for Creating Disk Volume Sets
8.6.1.2	Using the /BIND Qualifier
8.6.2	Creating a Disk Volume Set from New Volumes
8.6.3	Creating a Shadowed Disk Volume Set
8.6.4	Creating a Disk Volume Set from an Existing Volume and a New Volume
8.6.5	Adding Volumes to an Existing Disk Volume Set
8.7	Mounting ISO 9660 Volume Sets and Groups
8.7.1	Mounting ISO 9660 Volume Sets
8.7.2	Mounting ISO 9660 Volume Groups
8.7.3	Handling Partially Mounted ISO 9660 Volume Sets
8.7.4	Mounting ISO 9660 Volumes Using SVDs
8.7.5	Handling ISO 9660 Restrictions
8.8	Mounting Tape Volume Sets
8.8.1	Creating a Tape Volume Set
8.8.2	Mounting Continuation Volumes in a Tape Volume Set
8.8.2.1	Creating Labels
8.8.2.2	Enabling Automatic Volume Switching
8.8.2.3	Disabling Automatic Switching
8.8.2.4	Sending Messages Back to Users
8.8.3	Modifying Magnetic Tape Characteristics
8.9	Dismounting Volumes and Volume Sets
8.9.1	Dismounting a Single Volume
8.9.1.1	Dismounting Before Unloading a Volume
8.9.1.2	Dismounting Allocated Devices
8.9.1.3	Using DISMOUNT Command Qualifiers
8.9.2	Dismounting a Volume Set
8.9.3	Dismounting Foreign Volumes
8.9.4	Dismounting a Volume in an OpenVMS Cluster System
8.10	Using Command Procedures for Media Setup
8.10.1	Sample Command Procedure for Setting Up Disk Volumes
8.10.2	Sample Command Procedure for Setting Up Tape Volumes
8.11	Managing Disk Space
8.11.1	Understanding Disk Quotas
8.11.2	Establishing Disk Quotas
8.11.2.1	Creating a Quota File
8.11.2.2	Monitoring Disk Quotas
8.11.2.3	Suspending Quota Operations
8.11.3	Purging Files
8.11.4	Setting Version Limits on Files
8.11.5	Setting File Expiration Dates
8.12	Using the Analyze/Disk_Structure Utility to Check and Repair Disks
8.12.1	Reporting Errors
8.12.2	Reporting and Repairing Errors
8.12.3	Recovering Lost Files
8.12.4	Erasing Old Home Blocks
8.12.5	Creating a Disk Usage File
8.13	Using Mount Verification for Recovery
8.13.1	Understanding Mount Verification
8.13.2	Using Mount Verification
8.13.2.1	Enabling Mount Verification
8.13.2.2	Controlling Timeout Periods for Mount Verification
8.13.2.3	Recovering from Offline Errors
8.13.2.4	Recovering from Write-Lock Errors
8.13.2.5	Canceling Mount Verification
8.14	Using Interrupt Priority Level C (IPC)
8.14.1	Recalculating Quorum
8.14.2	Canceling Mount Verification
8.14.3	Entering the Debugger
8.15	Using the Bad Block Locator Utility to Detect Media Errors

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