HP Volume Shadowing for OpenVMS: OpenVMS Version 8.4

Index

A

Addressing data
recovery from errors, Repair and Recovery from Failures
ALLOCATE command, Allocating Devices
Allocation classes
naming format, Creating a Shadow Set
nonzero, Creating a Shadow Set
ALLOCLASS parameter, Guidelines for Using Volume Shadowing Parameters
ANALYZE/DISK/SHADOW command, Using ANALYZE/DISK/SHADOW to Examine a Shadow Set
ATM, Shadowing Disks Across an OpenVMS Cluster System
AUTOGEN utility
using with MODPARAMS.DAT, Setting System Parameters
Availability
achieved by shadow set configurations, Configuring Your System for High Data Availability
levels, Levels of High Data Availability Using Volume Shadowing
of data, Overview
performance impacts, Performance Information for Volume Shadowing
recovery from failures, Repair and Recovery from Failures
with write I/O requests, Overview

B

Backup operations, Performing Backup Operations on a Shadow Set
data consistency requirements, Data Consistency Requirements
database systems, Database Systems
guidelines for using shadow set member, Guidelines for Using a Shadow Set Member for Backup
host-based RAID, Host-Based RAID
mapped files, Mapped Files
multiple shadow sets, Multiple Shadow Sets
OpenVMS Cluster operations, OpenVMS Cluster Operation
OpenVMS file system, Base File System
restoring data, Restoring Data
revalidation of data consistency methods, Revalidation of Data Consistency Methods
RMS considerations, RMS Considerations
shadow copy as, Using Copy Operations to Create a Backup
testing, Testing
using Backup utility, Using the OpenVMS Backup Utility
virtual cache, $QIO File Access and VIOC
XFC, $QIO File Access and VIOC
Backup utility (BACKUP)
/IMAGE qualifier, Using BACKUP/IMAGE on a Shadow Set
revision number, Information in the Storage Control Block (SCB)
standalone
restrictions, Restrictions on BACKUP Procedures
Bitmaps
(see HBMM bitmaps)
Booting
satellite boot devices, Booting Satellite Nodes from a Served, System Disk Shadow Set
satellite nodes, Booting Satellite Nodes from a Served, System Disk Shadow Set
system disk shadow set, Booting from a System Disk Shadow Set

C

CI (computer interconnect)
and MSCP server access to shadow sets, Shadowing Disks Across an OpenVMS Cluster System
preventing resource saturation, Performance During Copy and Merge Operations
utilized for copy operations, Performance During Copy and Merge Operations
Cluster systems
(see OpenVMS Cluster systems)
CLUSTER_CONFIG.COM command procedure
setting shadowing parameters, Booting Satellite Nodes from a Served, System Disk Shadow Set
CLUSTER_CONFIG_LAN.COM command procedure
setting shadowing parameters, Booting Satellite Nodes from a Served, System Disk Shadow Set
Compatibility
shadow set members, Supported Devices
Configuration of a shadow set
effect on availability, Configuring Your System for High Data Availability
examples, Shadow Set Configurations
one system with one adapter, Shadow Set Configurations
one system with two host-based adapters, Shadow Set Configurations
OpenVMS Cluster with dual adapters, Shadow Set Configurations
Configuration requirements
HBMM, HBMM Configuration Requirements
HBMM in mixed-version or mixed-architecture cluster, HBMM in a Mixed-Version or Mixed-Architecture OpenVMS Cluster System
HBMM restrictions, HBMM Restrictions
Consistency
data, Ensuring Shadow Set Consistency
ensuring during failures, Types of Failures
when adding shadow set members, Checking Status of Potential Shadow Set Members With /CONFIRM
Controller errors
recovery from, Types of Failures
Controllers
performing DCD commands, Assisted Copy Operations (Alpha)
setting preferred path, Assisted Copy Operations (Alpha)
supporting performance assists, Improving Performance for Merge and Copy Operations
using performance assists, Improving Performance for Merge and Copy Operations
write log entries, Assisted Merge Operations (Alpha)
Copy operations
adding a member, Examples of Copy and Merge Operations
after a system failure, What Happens to a Shadow Set When a System Fails?
assisted, Assisted Copy Operations (Alpha)
controllers supporting, Improving Performance for Merge and Copy Operations
disabling on HSC controller, Assisted Copy Operations (Alpha), Controlling HSC Assisted Copy and Minimerge Operations
overview, Improving Performance for Merge and Copy Operations
performance, Effects on Performance
setting preferred path, Assisted Copy Operations (Alpha)
BACKUP revision number, Information in the Storage Control Block (SCB)
comparison with minicopy, Different Uses for Copy and Minicopy
controlling which systems manage them, Controlling Which Systems Manage Merge and Copy Operations
controlling with the SHADOW_MAX_COPY parameter, Guidelines for Using Volume Shadowing Parameters
example, Copy Operation: Creating a New Shadow Set
managing, Managing Copy and Merge Operations (Integrity servers and Alpha), Managing Copy Operations
multiple simultaneous, Guidelines for Using Volume Shadowing Parameters
no copy, Examples of Copy and Merge Operations
performance of minicopy versus DCD copy, Why Use Minicopy?
prioritizing, Prioritizing Merge and Copy Operations
proper dismount, Information in the Storage Control Block (SCB)
purpose, Copy Operations
recovery from system failures, What Happens to a Shadow Set When a System Fails?
transitions in shadow set membership, What Happens to a Shadow Set When a System Fails?
unassisted, Unassisted Copy Operations
volume label, Information in the Storage Control Block (SCB)
volume shadowing generation number, Information in the Storage Control Block (SCB)
with merge operation, Examples of Copy and Merge Operations
Copy threads
controlling dynamically, Performance During Copy and Merge Operations
controlling with the SHADOW_MAX_COPY parameter, Guidelines for Managing Shadow Set Performance
referred to in status messages, Shadow Server Messages
Crash dumps
shadowed system disk and minicopy, Obtaining Dump Files of Shadowed System Disk When Minicopy Is Used (Alpha Only)
written to system disk shadow set, Crash Dumping to a Shadowed Disk

D

Data
changing on individual members, Modifying Data on Individual Shadow Set Members
Data availability. (see Availability)
Data consistency, Ensuring Shadow Set Consistency
when adding shadow set members, Checking Status of Potential Shadow Set Members With /CONFIRM
Data errors
recovery from, Types of Failures
DCD (disk copy data) commands, Assisted Copy Operations (Alpha)
DDS., Supported Devices
DECnet databases
example of a satellite node, DECnet Database Example of a Satellite Node
Devices
allocating, Allocating Devices
DECram served device, Managing Shadow Sets With SET SHADOW (Integrity servers and Alpha)
recovery from controller errors, Types of Failures
recovery from data errors, Types of Failures
recovery from errors, Repair and Recovery from Failures
recovery from failures, Repair and Recovery from Failures
recovery from unit or drive errors, Types of Failures
supported, Hardware Environment
unsupported, Supported Devices
Digital Storage Architecture (DSA) disk drives, Hardware Environment
Disaster tolerant OpenVMS Cluster systems. (see OpenVMS Cluster systems)
Disk mirroring, Introduction to HP Volume Shadowing for OpenVMS
Disks
compatibility to form a shadow set, Supported Devices
in Files-11 structure, Supported Devices
initializing, Configuration Tasks
SCSI support, Supported Devices
DISMOUNT command
/FORCE_REMOVAL qualifier, Removing Members from Shadow Sets
/POLICY=MINICOPY qualifier, MOUNT Command Qualifiers (Shadowing Specific), Procedure for Using Minicopy
creating a write bitmap, Creating a Bitmap With DISMOUNT
removing a shadow set member, Removing Members and Dissolving Shadow Sets
required privileges, Removing Members and Dissolving Shadow Sets
use of multiple-site qualifiers, How to Use the Multiple-Site SET SHADOW and DISMOUNT Command Qualifiers
Dissimilar device shadowing (DDS), Supported Devices
DOSD (dump off system disk), Crash Dumping to a Shadowed Disk
use of DUMPSTYLE, Guidelines for Using Volume Shadowing Parameters
Drive errors
recovery from, Types of Failures
DSA (Digital Storage Architecture)
naming the virtual unit, Creating a Shadow Set
support for compliant hardware, Supported Configurations
DSSI (Digital Storage Systems Interconnect)
and MSCP server access to shadow sets, Shadowing Disks Across an OpenVMS Cluster System
DUMPSTYLE system parameter, Crash Dumping to a Shadowed Disk
DVE. (see Dynamic volume expansion (DVE))
Dynamic volume expansion (DVE), Supported Devices, Dynamic Volume Expansion (Integrity servers and Alpha)

E

Enhanced shadowing features, Enhanced Shadowing Features
Error messages, Messages
mount verification, Mount Verification Messages
OPCOM, OPCOM Message
shadow server, Shadow Server Messages
system service, Evaluating Condition Values Returned by $DISMOU and $MOUNT
VOLPROC, VOLPROC Messages
Errors
recovery from, Repair and Recovery from Failures
Ethernet
and MSCP server access to shadow sets, Shadowing Disks Across an OpenVMS Cluster System
Gigabit Ethernet usage, Shadowing Disks Across an OpenVMS Cluster System
preventing resource saturation, Performance During Copy and Merge Operations
utilized for copy operations, Performance During Copy and Merge Operations
Extensible Firmware Interface (EFI)
shadow set precautions, EFI Shell Precautions on Shadowed System Disks

F

F$GETDVI lexical function, Obtaining Shadow Set Information With F$GETDVI
Failures. (see Recoveries)
FDDI (Fiber Distributed Data Interface)
massively distributed shadowing, Shadowing Disks Across an OpenVMS Cluster System
File Allocation Table (FAT), EFI Shell Precautions on Shadowed System Disks
Files-11 volume structure
shadowing support, Supported Devices
Forced errors
checking the SCSI NOFE characteristics, Using SDA to Obtain Information About Third-Party SCSI Devices

G

Generation number
copy operation, Information in the Storage Control Block (SCB)
GRPNAM privilege
DISMOUNT command, Removing Members and Dissolving Shadow Sets
required for MOUNT command, Additional MOUNT Command Qualifiers Used for Shadowing

H

Hardware environment, Hardware Environment
HBMM bitmaps
master, How to Define an HBMM Policy
master and local, Bitmaps: Master and Local
selecting systems for master bitmaps, Selecting the Systems to Host Master Bitmaps
setting the RESET_THRESHOLD value, Considerations for Setting a Bitmap RESET_THRESHOLD Value
HBMM operations
configurating and managing, Configuring and Managing HBMM
displaying merge status, How to Display the Merge Status of Shadow Sets
how to activate, How to Activate HBMM on a Shadow Set
how to disable, How to Disable HBMM on a Shadow Set
multiple-site OpenVMS Cluster considerations, Considerations for Multiple-Site OpenVMS Cluster Systems
overview, Overview of HBMM
preventing, How to Prevent Merge Operations on a System
use of SET SHADOW/DEMAND_MERGE, Use of /DEMAND_MERGE When HBMM Is Enabled
using multiple policies, Using Multiple Policies
HBMM policies, HBMM Policies
activating, Rules Governing HBMM Policies
assigning, Rules Governing HBMM Policies, How to Assign an HBMM Policy to a Shadow Set
changing, Rules Governing HBMM Policies
DEFAULT name, Rules Governing HBMM Policies
defining, How to Define an HBMM Policy
how to apply changed DEFAULT policy, How to Apply a Changed DEFAULT Policy
how to change policy assignments, How to Change a Policy Assignment of a Shadow Set
how to delete named policies, How to Delete a Named Policy from the Cluster
how to display, How to Display Policies
how to remove policy associations, How to Remove a Policy Assignment from a Shadow Set
longevity, Rules Governing HBMM Policies
NODEFAULT name, Rules Governing HBMM Policies
rules, Rules Governing HBMM Policies
syntax specification, HBMM Policy Specification Syntax
Host-based adapter (HBA), Shadow Set Configurations
Host-based minicopy
Mutliuse property, Multiuse Property for Host-Based Minicopies
HSC (hierarchical storage controller)
disabling performance assists, Controlling HSC Assisted Copy and Minimerge Operations

I

INITIALIZE command
/ERASE qualifier, Using INITIALIZE/SHADOW/ERASE to Form a Shadow Set (Integrity servers and Alpha)
/LIMIT qualifier, Dynamic Volume Expansion (Integrity servers and Alpha)
/SHADOW and /ERASE qualifiers, Using INITIALIZE/SHADOW/ERASE to Form a Shadow Set (Integrity servers and Alpha)
Initializing
disk volumes, Configuration Tasks
Installations
Volume Shadowing for OpenVMS, Installation
Item codes
adding to a shadow set, Item List to Add a Member to a Shadow Set
creating and mounting a shadow set, Item List to Create and Mount a Shadow Set
creating and mounting a volume set, Item List to Create and Mount a Volume Set
with SYS$GETDVI system service, $GETDVI Shadow Set Item Codes
with SYS$MOUNT system service, $MOUNT Shadow Set Item Codes

K

KZPDC
Smart Array 5300, Supported Devices

L

LANCP databases
example of a satellite node, LANCP Database Example of a Satellite Node
License registrations
capacity, Licensing Volume Shadowing for OpenVMS
volume shadowing, Licensing Volume Shadowing for OpenVMS
LOG_IO privilege
DISMOUNT/POLICY command, Removing Members and Dissolving Shadow Sets
MOUNT/POLICY command, MOUNT Command Qualifiers for Shadowing

M

Mass storage control protocol (see MSCP)
Merge operations
after a system failure, What Happens to a Shadow Set When a System Fails?
assisted
performance, Assisted Merge Operations (Alpha)
automatic throttling, Performance During Copy and Merge Operations
comparison of merge and minimerge, Comparison of Merge and Minimerge Operations
controlling which systems manage them, Controlling Which Systems Manage Merge and Copy Operations
demand merge, SET SHADOW Command Qualifiers
displaying status, How to Display the Merge Status of Shadow Sets
example, Examples of Copy and Merge Operations
improving performance, Improving Performance of Unassisted Merge Operations
managing, Managing Copy and Merge Operations (Integrity servers and Alpha), Managing Merge Operations
merge recovery operation, Overview of Full Merge and Minimerge Operations
multiple simultaneous, Guidelines for Using Volume Shadowing Parameters
overview, Overview of Full Merge and Minimerge Operations
preventing, How to Prevent Merge Operations on a System
preventing unnecessary, Dismounting Shadow Sets in Site-Specific Shutdown Procedures
prioritizing, Prioritizing Merge and Copy Operations
throttling, Improving Performance of Unassisted Merge Operations
transitions in shadow set membership, What Happens to a Shadow Set When a System Fails?
unassisted, Unassisted Merge Operations
use of DEMAND_MERGE, Using /DEMAND_MERGE to Start a Merge Operation
use of SHADOW_MAX_COPY, Guidelines for Using Volume Shadowing Parameters
Messages, Messages
displayed for unregistered nodes, Licensing Volume Shadowing for OpenVMS
mount verification, Mount Verification Messages
OPCOM, OPCOM Message
shadow server, Shadow Server Messages
system service, Evaluating Condition Values Returned by $DISMOU and $MOUNT
VOLPROC, VOLPROC Messages
Minicopy bitmaps
creating, Creating Bitmaps
DISMOUNT command, Creating a Bitmap With DISMOUNT
MOUNT command, Creating a Bitmap With MOUNT
displaying, Deleting Bitmaps
displaying IDs, Displaying Bitmap IDs
local, Master and Local Bitmaps
managing with DCL commands, Managing Bitmaps With DCL Commands
master, Using Minicopy for Backing Up Data (Integrity servers and Alpha), Master and Local Bitmaps
representation, What Is Minicopy?
Minicopy operations
definition, What Is Minicopy?
getting a dump file, Obtaining Dump Files of Shadowed System Disk When Minicopy Is Used (Alpha Only)
performance, Comparison of Minicopy and Hardware-Assist (DCD) Copy Performance
purpose, Why Use Minicopy?
required steps, Procedure for Using Minicopy
restrictions, Minicopy Restrictions
starting, Starting a Minicopy Operation
Minimerge operations
actions during system failure, What Happens to a Shadow Set When a System Fails?
after a system failure, What Happens to a Shadow Set When a System Fails?, Crash Dumping to a Shadowed Disk
configuring for system disk, Crash Dumping to a Shadowed Disk
controllers supporting, Improving Performance for Merge and Copy Operations
disabling, Assisted Merge Operations (Alpha)
disabling on HSC controller, Controlling HSC Assisted Copy and Minimerge Operations
enabling, Guidelines for Using Volume Shadowing Parameters
minimerge recovery operation, Overview of Full Merge and Minimerge Operations
overview, Improving Performance for Merge and Copy Operations
performance, Assisted Merge Operations (Alpha), Effects on Performance
write log entries, Assisted Merge Operations (Alpha)
Mirroring
disks, Introduction to HP Volume Shadowing for OpenVMS
MODPARAMS.DAT file
editing in an OpenVMS Cluster, Setting System Parameters
example, Setting System Parameters
setting parameters, Setting System Parameters
MOUNT command, Allocating Devices
/CLUSTER qualifier, Booting Satellite Nodes from a Served, System Disk Shadow Set, Additional MOUNT Command Qualifiers (Not Shadowing Specific), Creating a Shadow Set With /SYSTEM and With /CLUSTER
/COPY qualifier, Using the /NPCOPY Qualifier
/INCLUDE qualifier, Reconstructing a Shadow Set With /INCLUDE
/NOASSIST qualifier, MOUNT Command Qualifiers for Shadowing
/NOMOUNT_VERIFICATION qualifier, MOUNT Command Qualifiers Specific to Shadowing
/OVERRIDE=IDENTIFICATION qualifier, MOUNT Command Qualifiers Specific to Shadowing
/OVERRIDE=SHADOW_MEMBERSHIP qualifier, Mounting a Former Shadow Set Member as a Non-shadowed Disk
/POLICY=MINICOPY qualifier, What Is Minicopy?, Procedure for Using Minicopy, Starting a Minicopy Operation
/SHADOW qualifier, Creating a Shadow Set
/SYSTEM qualifier, Additional MOUNT Command Qualifiers Used for Shadowing
adding shadow set members, Creating a Two-Member Shadow Set and Adding a Third Member
creating a write bitmap, Creating a Bitmap With MOUNT
format, Creating a Shadow Set
POLICY qualifier, MOUNT Command Qualifiers Specific to Shadowing
qualifiers, MOUNT Command Qualifiers for Shadowing, MOUNT Command Qualifiers Specific to Shadowing, Additional MOUNT Command Qualifiers Used for Shadowing
reconstructing shadow sets with /INCLUDE, Reconstructing a Shadow Set With /INCLUDE
required privileges, MOUNT Command Qualifiers for Shadowing, Additional MOUNT Command Qualifiers Used for Shadowing
starting a write bitmap, Procedure for Using Minicopy
Mount utility messages
systems that do not support HBMM, Mount Utility Messages
Mount verification
messages, Mount Verification Messages
Mounting
devices, Allocating Devices
shadow sets, Additional MOUNT Command Qualifiers (Not Shadowing Specific)
virtual units, Creating a Shadow Set
volume sets, Using $MOUNT to Mount Volume Sets
MSCP
server, Shadowing Disks Across an OpenVMS Cluster System
MSCP (mass storage control protocol)
DCD commands, Assisted Copy Operations (Alpha)
supported devices, Hardware Environment
Mutliuse property, Multiuse Property for Host-Based Minicopies
MVTIMEOUT parameter, Types of Failures

N

Naming conventions
devices, Creating a Shadow Set
shadow sets, Creating a Shadow Set
virtual units, Creating a Shadow Set
NOFE (no forced error bit), Using SDA to Obtain Information About Third-Party SCSI Devices

O

OPCOM (Operator Communication Manager)
messages, OPCOM Message
OpenVMS Cluster systems
computer interconnects, Shadowing Disks Across an OpenVMS Cluster System
enhanced shadowing performance, Improving Performance for Merge and Copy Operations
interprocess communication, Shadowing Disks Across an OpenVMS Cluster System
maximum number of shadow sets, Maximum Number of Shadow Sets
mounting shadow sets, Booting Satellite Nodes from a Served, System Disk Shadow Set, Additional MOUNT Command Qualifiers (Not Shadowing Specific)
MSCP server access, Shadowing Disks Across an OpenVMS Cluster System
multiple-site clusters
shadowing across, Managing Shadow Sets With SET SHADOW (Integrity servers and Alpha)
providing high data availability, Levels of High Data Availability Using Volume Shadowing
requirement for nonzero allocation class, Creating a Shadow Set
shadowing across, Shadowing Disks Across an OpenVMS Cluster System
updating system parameters, Setting System Parameters
OpenVMS multiple-site clusters
managing shadow set members, Managing Shadow Sets With SET SHADOW (Integrity servers and Alpha)
OPER privilege
MOUNT command, MOUNT Command Qualifiers for Shadowing
Operating environments for OpenVMS Integrity server systems, Licensing Volume Shadowing for OpenVMS

R

RAID (redundant arrays of independent disks), Overview
levels, Striping (RAID) Implementation
Read requests
performance, Overview
RECNXINTERVAL parameter, Guidelines for Using Volume Shadowing Parameters, Controlling Which Systems Manage Merge and Copy Operations
Recoveries
from controller errors, Types of Failures
from data errors, Types of Failures
from device failure, Repair and Recovery from Failures
from system failures, What Happens to a Shadow Set When a System Fails?
from unit or drive errors, Types of Failures
repair actions, Repair and Recovery from Failures
repairing data, Overview

S

Satellite nodes, Booting Satellite Nodes from a Served, System Disk Shadow Set
booting shadowed, Booting Satellite Nodes from a Served, System Disk Shadow Set
DECnet database example, DECnet Database Example of a Satellite Node
LANCP database example, LANCP Database Example of a Satellite Node
SCBs (storage control blocks)
BACKUP revision number, Information in the Storage Control Block (SCB)
proper dismount, Information in the Storage Control Block (SCB)
read at boot time, Booting from a System Disk Shadow Set
volume label, Information in the Storage Control Block (SCB)
volume shadowing generation number, Information in the Storage Control Block (SCB)
SCSI (Small Computer Systems Interface)
hardware compliance, Hardware Environment
support for compliant hardware, Supported Devices
third-party compliance, Using SDA to Obtain Information About Third-Party SCSI Devices
SDA., Crash Dumping to a Shadowed Disk
Servers
MSCP, Shadowing Disks Across an OpenVMS Cluster System
shadow server messages, Shadow Server Messages
SET SHADOW Command
/NOSTALL qualifier, SET SHADOW Command Qualifiers
/RESET_COUNTERS, SET SHADOW Command Qualifiers
SET SHADOW command, Managing Copy and Merge Operations (Integrity servers and Alpha)
/ABORT_VIRTUAL_UNIT qualifier, SET SHADOW Command Qualifiers
/ALL qualifier, SET SHADOW Command Qualifiers
/CONFIRM qualifier, SET SHADOW Command Qualifiers
/COPY_SOURCE qualifier, SET SHADOW Command Qualifiers
/DEMAND_MERGE qualifier, SET SHADOW Command Qualifiers, Use of /DEMAND_MERGE When HBMM Is Enabled
/DISABLE=HBMM qualifier, SET SHADOW Command Qualifiers
/ENABLE=HBMM qualifier, SET SHADOW Command Qualifiers
/EVALUATE=RESOURCES qualifier, SET SHADOW Command Qualifiers, Managing Transient States in Progress
/FORCE_REMOVAL qualifier, SET SHADOW Command Qualifiers
/LOG qualifier, SET SHADOW Command Qualifiers
/MEMBER_TIMEOUTqualifier, SET SHADOW Command Qualifiers
/MVTIMEOUTqualifier, SET SHADOW Command Qualifiers
/NAME=policy-name qualifier, SET SHADOW Command Qualifiers
/OUTPUT qualifier, SET SHADOW Command Qualifiers
/POLICY=HBMM qualifier, SET SHADOW Command Qualifiers
/PRIORITY qualifier, SET SHADOW Command Qualifiers, Managing Transient States in Progress
/READ_COST qualifier, SET SHADOW Command Qualifiers
/SITE qualifier, SET SHADOW Command Qualifiers
/STALL qualifier, SET SHADOW Command Qualifiers
qualifiers, Managing Copy and Merge Operations (Integrity servers and Alpha)
usage, Mounting a Former Shadow Set Member as a Non-shadowed Disk
use of multiple-site qualifiers, How to Use the Multiple-Site SET SHADOW and DISMOUNT Command Qualifiers
SET VOLUME command
/LIMIT qualifier, Dynamic Volume Expansion (Integrity servers and Alpha)
SHAD$MERGE_DELAY_FACTOR_DSAnnnn, Improving Performance of Unassisted Merge Operations
SHAD$MERGE_DELAY_THRESHOLD_DSAnnnn, Improving Performance of Unassisted Merge Operations
Shadow servers
messages, Shadow Server Messages
Shadow set configurations, Maximum Number of Shadow Sets
effect on performance, Performance Information for Volume Shadowing
enhanced shadowing performance, Improving Performance for Merge and Copy Operations
maximum number of shadow sets, Maximum Number of Shadow Sets
setting up, Preparing to Use Volume Shadowing
Shadow set members, Overview
backing up, Performing Backup Operations on a Shadow Set, Restrictions on BACKUP Procedures
crash dumping to system disk, Crash Dumping to a Shadowed Disk
dismounting, Removing Members and Dissolving Shadow Sets
distributed across an OpenVMS Cluster system, Supported Configurations
inaccessibility because of failures, Repair and Recovery from Failures
initializing, Configuration Tasks
modifying data, Modifying Data on Individual Shadow Set Members
naming, Creating a Shadow Set
requirement for nonzero allocation class, Creating a Shadow Set
transferring changes, Modifying Data on Individual Shadow Set Members
Shadow sets
adding members, Adding Shadow Set Members, Creating a Two-Member Shadow Set and Adding a Third Member
additional members, Item List to Add a Member to a Shadow Set
assigning priorities, Assigning Priorities to Shadow Sets
backing up, Performing Backup Operations on a Shadow Set
clusterwide, Additional MOUNT Command Qualifiers (Not Shadowing Specific)
components, Overview
configuration examples, Shadow Set Configurations
copy operations, Copy Operations
crash dumping to system disk, Obtaining Dump Files of Shadowed System Disk When Minicopy Is Used (Alpha Only), Crash Dumping to a Shadowed Disk
creating, Creating a Shadow Set, Different Uses for Copy and Minicopy
with SYS$MOUNT system service, Using $MOUNT to Create and Mount Shadow Sets, Using $MOUNT to Mount Volume Sets
data consistency, Ensuring Shadow Set Consistency
definition, Overview
dismounting, Dissolving Shadow Sets
with SYS$DISMOU system service, Dismounting and Dissolving a Shadow Set Locally
displaying information about, Displaying Information About Shadow Sets
displaying priorities, Displaying Shadow Set Priority Values
dissolving, Dissolving Shadow Sets
with SYS$DISMOU system service, Dismounting and Dissolving a Shadow Set Locally
distributed across an OpenVMS Cluster system, Shadowing Disks Across an OpenVMS Cluster System
examining, Displaying Information About Shadow Sets
with DCL command SHOW DEVICE, SHOW DEVICE Examples for Shadow Set Information
with F$GETDVI lexical function, Obtaining Shadow Set Information With F$GETDVI
with SDA, Displaying Shadow Set Information With SDA
initializing members, Configuration Tasks
maximum number, Maximum Number of Shadow Sets
merge throttle, Performance During Copy and Merge Operations
modifying data, Modifying Data on Individual Shadow Set Members
mounting, Creating a Shadow Set, Item List to Create and Mount a Shadow Set
a volume set, Using $MOUNT to Mount Volume Sets
with SYS$MOUNT system service, Using $MOUNT to Create and Mount Shadow Sets, Using $MOUNT to Mount Volume Sets
overview, Overview
quorum disk, Shadowing System Disks
removing members
with DISMOUNT command, Removing Members and Dissolving Shadow Sets
with SYS$DISMOU system service, Removing a Member from a Shadow Set
requirements, Creating a Shadow Set
satellite node, Booting Satellite Nodes from a Served, System Disk Shadow Set
standalone BACKUP, Restrictions on BACKUP Procedures
state changes, Ensuring Shadow Set Consistency
steady state, What Happens to a Shadow Set When a System Fails?
steady-state performance, Performance During Steady State
system disk
upgrading, Upgrading the Operating System on a System Disk Shadow Set
transitions during copy operations, What Happens to a Shadow Set When a System Fails?
transitions during merge operations, What Happens to a Shadow Set When a System Fails?
transitions during minimerge operations, What Happens to a Shadow Set When a System Fails?
using BACKUP/IMAGE, Modifying Data on Individual Shadow Set Members
SHADOW_ENABLE parameter, Volume Shadowing Parameters
SHADOW_HBMM_RTC parameter, Volume Shadowing Parameters
SHADOW_MAX_COPY parameter, Using Minicopy in a Mixed-Version OpenVMS Cluster System, Guidelines for Using Volume Shadowing Parameters, Managing Transient States in Progress
guidelines for setting, Guidelines for Managing Shadow Set Performance
SHADOW_MAX_UNIT parameter, Guidelines for Using Volume Shadowing Parameters
SHADOW_MBR_TMO parameter, Types of Failures, Guidelines for Using Volume Shadowing Parameters
SHADOW_PSM_DLY parameter, Guidelines for Using Volume Shadowing Parameters
SHADOW_REC_DLY parameter, Guidelines for Using Volume Shadowing Parameters, Controlling Which Systems Manage Merge and Copy Operations
SHADOW_SITE_ID parameter, Volume Shadowing Parameters
SHADOW_SYS_DISK parameter, Guidelines for Using Volume Shadowing Parameters
SHADOW_SYS_TMO parameter, Guidelines for Using Volume Shadowing Parameters
SHADOW_SYS_UNIT parameter, Guidelines for Using Volume Shadowing Parameters
SHADOW_SYS_WAIT parameter, Guidelines for Using Volume Shadowing Parameters
SHADOWING parameter, Guidelines for Using Volume Shadowing Parameters
SHOW CLUSTER command
displaying write bitmap information, Displaying Bitmap Status of Cluster Members
SHOW DEVICE command
displaying write bitmap information, Determining Bitmap Support and Activity
during copy operation, Copy Operation: Creating a New Shadow Set
during merge operation, Examples of Copy and Merge Operations
during steady state, Examples of Copy and Merge Operations
example sequence, SHOW DEVICE Examples for Shadow Set Information
listing shadow set members, Listing Shadow Set Members
listing shadow sets, Listing Shadow Sets
overview, Displaying Information About Shadow Sets
specifying the virtual unit, Listing Shadow Sets
SHOW SHADOW command, SHOW SHADOW Management Functions
enhanced shadowing features, Enhanced Shadowing Features
qualifiers, SHOW SHADOW Management Functions
Shutdown procedures
creating site-specific, Dismounting Shadow Sets in Site-Specific Shutdown Procedures
preventing unnecessary merge operations on reboot, Dismounting Shadow Sets in Site-Specific Shutdown Procedures
Smart Array 5300
KZPDC, Supported Devices
Standalone BACKUP, Restrictions on BACKUP Procedures
Status messages
mount verification, Mount Verification Messages
OPCOM, OPCOM Message
shadow server, Shadow Server Messages
VOLPROC, VOLPROC Messages
Steady state, Default Management of Merge and Copy Operations
definition, Shadow Set Consistency
performance, Performance During Steady State
Storage control blocks
(see SCBs (storage control blocks))
Stripe sets
shadowed, Shadow Sets, Bound Volume Sets, and Stripe Sets
Striping
and performance, Striping (RAID) Implementation
SYLOGICALS.COM startup file
defining site location, Managing Shadow Sets With SET SHADOW (Integrity servers and Alpha)
SYS$DISMOU system service
condition values returned by, Evaluating Condition Values Returned by $DISMOU and $MOUNT
dismounting volumes with, Using $DISMOU to Dismount Shadow Sets
SYS$GETDVI system service
getting information about volumes with, Using $GETDVI to Obtain Information About Shadow Sets
SYS$MOUNT system service
condition values returned by, Evaluating Condition Values Returned by $DISMOU and $MOUNT
item codes, $MOUNT Shadow Set Item Codes
mounting volumes, Using $MOUNT to Create and Mount Shadow Sets, Using $MOUNT to Mount Volume Sets
shadow set item codes, $MOUNT Shadow Set Item Codes
shadowed volume sets, Using $MOUNT to Mount Volume Sets
SYSGEN (System Generation utility)
SET command, Managing Transient States in Progress
WRITE ACTIVE command, Managing Transient States in Progress
SYSNAM privilege
DISMOUNT command, Removing Members and Dissolving Shadow Sets
MOUNT command, MOUNT Command Qualifiers for Shadowing
required for MOUNT command, Additional MOUNT Command Qualifiers Used for Shadowing
System disk shadow sets
booting from, Booting from a System Disk Shadow Set
booting satellite nodes, Booting Satellite Nodes from a Served, System Disk Shadow Set
crash dumping to, Obtaining Dump Files of Shadowed System Disk When Minicopy Is Used (Alpha Only), Crash Dumping to a Shadowed Disk
SHADOW_SYS_DISK parameter, Guidelines for Using Volume Shadowing Parameters, Crash Dumping to a Shadowed Disk
SHADOW_SYS_TMO parameter, Guidelines for Using Volume Shadowing Parameters
SHADOW_SYS_UNIT parameter, Guidelines for Using Volume Shadowing Parameters
SHADOW_SYS_WAIT parameter, Guidelines for Using Volume Shadowing Parameters
System disks
crash dumping to, Crash Dumping to a Shadowed Disk
upgrading, Upgrading the Operating System on a System Disk Shadow Set
System Dump Analyzer utility (SDA)
checking SCSI compliance, Using SDA to Obtain Information About Third-Party SCSI Devices
dumping to a shadowed disk, Crash Dumping to a Shadowed Disk
dumping to a system disk shadow set, Obtaining Dump Files of Shadowed System Disk When Minicopy Is Used (Alpha Only)
examining a shadow set, Displaying Shadow Set Information With SDA
example, Displaying Shadow Set Information With SDA
System failure
shadow set transitions, What Happens to a Shadow Set When a System Fails?
System management
on systems with volume shadowing, Performing System Management Tasks on Shadowed Systems
setting up a shadowing environment, Preparing to Use Volume Shadowing
System parameters
ALLOCLASS, Guidelines for Using Volume Shadowing Parameters
bitmap, Bitmap System Parameters
displaying current SYSGEN values, Displaying System Parameters
DUMPSTYLE, Crash Dumping to a Shadowed Disk
MODPARAMS.DAT file, Setting System Parameters
MVTIMEOUT parameter, Types of Failures
RECNXINTERVAL, Guidelines for Using Volume Shadowing Parameters, Controlling Which Systems Manage Merge and Copy Operations
setting, Setting System Parameters
SHADOW_ENABLE, Volume Shadowing Parameters
SHADOW_HBMM_RTC, Volume Shadowing Parameters
SHADOW_MAX_COPY, Using Minicopy in a Mixed-Version OpenVMS Cluster System, Guidelines for Using Volume Shadowing Parameters, Managing Transient States in Progress, Guidelines for Managing Shadow Set Performance
SHADOW_MAX_UNIT, Guidelines for Using Volume Shadowing Parameters
SHADOW_MBR_TMO, Types of Failures, Guidelines for Using Volume Shadowing Parameters
SHADOW_PSM_DLY, Volume Shadowing Parameters
SHADOW_PSM_RDLY, Guidelines for Using Volume Shadowing Parameters
SHADOW_REC_DLY, Guidelines for Using Volume Shadowing Parameters, Controlling Which Systems Manage Merge and Copy Operations
SHADOW_SITE_ID, Volume Shadowing Parameters
SHADOW_SYS_DISK, Guidelines for Using Volume Shadowing Parameters, Preparing a Shadowed System Disk, Crash Dumping to a Shadowed Disk
SHADOW_SYS_TMO, Guidelines for Using Volume Shadowing Parameters
SHADOW_SYS_UNIT, Guidelines for Using Volume Shadowing Parameters
SHADOW_SYS_WAIT, Guidelines for Using Volume Shadowing Parameters
SHADOWING, Guidelines for Using Volume Shadowing Parameters
using MODPARAMS.DAT, Setting System Parameters
WBM_MSG_INT, Bitmap System Parameters
WBM_MSG_LOWER, Bitmap System Parameters
WBM_MSG_UPPER, Bitmap System Parameters
WBM_OPCOM_LVL, Bitmap System Parameters
System services
performing shadow set operations, Creating and Managing Shadow Sets with System Services

T

Timeouts
disk recovery, Guidelines for Using Volume Shadowing Parameters
transient state events, Visible Impact of Transient State Events
Transient state operations
hierarchy, Hierarchy of Transient State Operations
Transient states
definition, Default Management of Merge and Copy Operations
managing, Managing Transient States in Progress
Troubleshooting. (see Recoveries)

U

UICs
for mounting disks, MOUNT Command Qualifiers for Shadowing
Unit errors
recovery from, Types of Failures
Upgrades
operating system, Upgrading the Operating System on a System Disk Shadow Set
User identification codes., MOUNT Command Qualifiers for Shadowing

W

WBM_MSG_INT parameter, Bitmap System Parameters
WBM_MSG_LOWER parameter, Bitmap System Parameters
WBM_MSG_UPPER parameter, Bitmap System Parameters
WBM_OPCOM_LVL parameter, Bitmap System Parameters
Write protection
hardware, Supported Devices
Write requests
performance, Overview