Chapter 7 |
7
|
Using Minicopy for Backing Up Data (Alpha)
|
7.1
|
What Is Minicopy?
|
7.2
|
Different Uses for Copy and Minicopy
|
7.3
|
Why Use Minicopy?
|
7.4
|
Procedure for Using Minicopy
|
7.5
|
Minicopy Restrictions
|
7.6
|
Creating Write Bitmaps
|
7.6.1
|
Creating a Write Bitmap With DISMOUNT
|
7.6.2
|
Creating a Write Bitmap With MOUNT
|
7.7
|
Starting a Minicopy Operation
|
7.8
|
Master and Local Write Bitmaps
|
7.9
|
System Parameters for Managing Write Bitmap Messages and Shadow Set Limit
|
7.10
|
Managing Write Bitmaps With DCL Commands
|
7.10.1
|
Determining Write Bitmap Support and Activity
|
7.10.2
|
Displaying Write Bitmap IDs
|
7.10.3
|
Displaying Write Bitmap Status of Cluster Members
|
7.10.4
|
Deleting Write Bitmaps
|
7.11
|
Performance Implications of Write Bitmaps
|
7.12
|
Guidelines for Using a Shadow Set Member for Backup
|
7.12.1
|
Removing a Shadow Set Member for Backup
|
7.12.2
|
Data Consistency Requirements
|
7.12.3
|
Application Activity
|
7.12.4
|
RMS Considerations
|
7.12.4.1
|
Caching and Deferred Writes
|
7.12.4.2
|
End of File
|
7.12.4.3
|
Index Updates
|
7.12.4.4
|
Run-Time Libraries
|
7.12.4.5
|
$FLUSH
|
7.12.4.6
|
Journaling and Transactions
|
7.12.5
|
Mapped Files
|
7.12.6
|
Database Systems
|
7.12.7
|
Base File System
|
7.12.8
|
$QIO File Access and VIOC
|
7.12.9
|
Multiple Shadow Sets
|
7.12.10
|
Host-Based RAID
|
7.12.11
|
OpenVMS Cluster Operation
|
7.12.12
|
Testing
|
7.12.13
|
Restoring Data
|
7.12.14
|
Revalidation of Data Consistency Methods
|
Chapter 8 |
8
|
Performing System Management Tasks on Shadowed Systems
|
8.1
|
Upgrading the Operating System on a System Disk Shadow Set
|
8.2
|
Modifying Data on Individual Shadow Set Members
|
8.3
|
Performing Backup Operations on a Shadow Set
|
8.3.1
|
Restrictions on BACKUP Procedures
|
8.3.2
|
Using Copy Operations to Create a Backup
|
8.3.3
|
Using the OpenVMS Backup Utility
|
8.3.4
|
Using BACKUP/IMAGE on a Shadow Set
|
8.4
|
Crash Dumping to a Shadowed Disk
|
Chapter 9 |
9
|
Performance Information for Volume Shadowing
|
9.1
|
Performance During Steady State
|
9.2
|
Performance During Copy and Merge Operations
|
9.2.1
|
Improving Performance of Unassisted Merge Operations
|
9.2.2
|
Improving Performance for Merge and Copy Operations
|
9.2.3
|
Effects on Performance
|
9.3
|
Guidelines for Managing Shadow Set Performance
|
9.4
|
Striping (RAID) Implementation
|
Appendix A |
Appendix A
|
Messages
|
A.1
|
Mount Verification Messages
|
A.2
|
OPCOM Message
|
A.3
|
Shadow Server Messages
|
A.4
|
VOLPROC Messages
|
Glossary |
Glossary
|
Glossary
|
Index |
Index |
Examples |
3-1 |
Nodes Not Registered to Use Volume Shadowing |
3-2 |
MODPARAMS.DAT File |
3-3 |
LANCP Database Example of a Satellite Node |
3-4 |
DECnet Database Example of a Satellite Node |
4-1 |
Creating a Shadow Set |
4-2 |
Using the /NOASSIST Qualifier |
4-3 |
Using the /CLUSTER Qualifier |
4-4 |
Adding a Disk to an Existing Shadow Set |
4-5 |
Creating a Shadow Set and Adding Third Member |
4-6 |
Using the /CONFIRM Qualifier |
4-7 |
Using the /NOCOPY Qualifier |
4-8 |
Reconstructing Shadow Sets With /INCLUDE |
4-9 |
Dissolving a Shadow Set |
5-1 |
Item List to Create and Mount a Shadow Set |
5-2 |
Item List to Add a Member to a Shadow Set |
5-3 |
Item List to Create and Mount a Volume Set |
5-4 |
Removing a Member from a Shadow Set |
5-5 |
Dismounting and Dissolving a Shadow Set Locally |
5-6 |
Dismounting and Dissolving a Shadow Set Across the Cluster |
6-1 |
Copy Operation: Creating a New Shadow Set |
6-2 |
Copy Operation: Adding a Member to an Existing Shadow Set |
6-3 |
No Copy Operation: Rebuilding a Shadow Set |
6-4 |
Merge Operation: Rebuilding a Shadow Set |
Figures |
1-1 |
Elements of a Shadow Set |
1-2 |
Shadow Sets Accessed Through the MSCP Server |
2-1 |
Levels of Availability |
2-2 |
Configuration of a Shadow Set (One System, One Adapter) |
2-3 |
Configuration of a Shadow Set (One System, Two Adapters) |
2-4 |
Configuration of a Shadow Set (OpenVMS Cluster, Dual Adapters) |
2-5 |
Configuration of a Shadow Set (Highly Available OpenVMS Cluster) |
2-6 |
Configuration of a Shadow Set (Multiple Star Couplers, Multiple HSJ Controllers) |
2-7 |
Configuration of a Shadowed FDDI Multiple-Site Cluster |
2-8 |
Configuration of a Shadowed Fibre Channel Multiple-Site Cluster |
3-1 |
Booting Satellite Nodes |
4-1 |
Multiple-Site OpenVMS Cluster System With FC and LAN Interconnects |
7-1 |
Application Writes to a Shadow Set |
7-2 |
Application Writes to a Write Bitmap |
7-3 |
Member Returned to the Shadow Set (Virtual Unit) |
Tables |
1-1 |
Main Volume Shadowing Tasks, Operation Name, and Related Software |
2-1 |
Types of Failures |
3-1 |
Volume Shadowing Parameters |
3-2 |
SHADOWING Parameter Settings |
3-3 |
Write Bitmap System Parameters |
4-1 |
MOUNT Command Qualifiers (Shadowing Specific) |
4-2 |
Additional MOUNT Command Qualifiers (Not Shadowing Specific) |
4-3 |
SET DEVICE Command Qualifiers for Multiple-Site Shadow Set Members |
4-4 |
F$GETDVI Item Codes for Volume Shadowing |
5-1 |
SYS$MOUNT Item Codes |
5-2 |
$DISMOU Flag Options |
5-3 |
SYS$GETDVI Item Codes |
6-1 |
Information in the Storage Control Block (SCB) |
7-1 |
Comparison of Minicopy and Full Copy Performance |
7-2 |
Comparison of Minicopy and Hardware-Assist (DCD) Copy Performance |
9-1 |
RAID Levels |