Index

Symbols

/POLICY Qualifier

COUNT, SET SHADOW Command Qualifiers
DISMOUNT, SET SHADOW Command Qualifiers
MASTER_LIST, SET SHADOW Command Qualifiers
MULTIUSE, SET SHADOW Command Qualifiers
RESET_THRESHOLD, SET SHADOW Command Qualifiers

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

P

PAKs

registering, Licensing Volume Shadowing for OpenVMS

Parameters. (see System parameters)

Performance, Performance Information for Volume Shadowing

assisted copies, Assisted Copy Operations (Alpha), Improving Performance for Merge and Copy Operations, Effects on Performance
assisted merge operations, Assisted Merge Operations (Alpha)
automatic merge throttle, Performance During Copy and Merge Operations
controlling copy operations with SHADOW_MAX_COPY, Guidelines for Using Volume Shadowing Parameters
for read I/O requests, Overview
merge assists, Improving Performance for Merge and Copy Operations
minimerge, Effects on Performance
shadow set, Performance Information for Volume Shadowing
steady state, Performance During Steady State
write log entries, Assisted Merge Operations (Alpha)

Performance assists

copy operation, Improving Performance for Merge and Copy Operations
merge operation, Improving Performance for Merge and Copy Operations

Performance implications

bitmaps, Performance Implications of Bitmaps
SetBit messages, Performance Implications of Bitmaps

Policies, Overview of HBMM

Preferred path

setting for controllers, Assisted Copy Operations (Alpha)

Privileges

LOG_IO, MOUNT Command Qualifiers for Shadowing
OPER, MOUNT Command Qualifiers for Shadowing
SYSNAM, Booting Satellite Nodes from a Served, System Disk Shadow Set, MOUNT Command Qualifiers for Shadowing
VOLPRO, MOUNT Command Qualifiers for Shadowing

Product Authorization Keys. (see PAKs)

Q

Quorum disk, Shadowing System Disks

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

V

Virtual units

as system disk shadow set, Booting from a System Disk Shadow Set
clusterwide, Booting Satellite Nodes from a Served, System Disk Shadow Set, Creating a Shadow Set
definition, Overview
distributed, Installation
naming conventions, Shadow Set Configurations

visible impact, Visible Impact of Transient State Events

VOLPRO privilege

MOUNT command, MOUNT Command Qualifiers for Shadowing

VOLPROC command

messages, VOLPROC Messages

Volume labels

copy operation, Information in the Storage Control Block (SCB)
differences among shadow set members, MOUNT Command Qualifiers Specific to Shadowing

Volume sets

constructing, Evaluating Condition Values Returned by $DISMOU and $MOUNT

mounting, Using $MOUNT to Mount Volume Sets, Item List to Create and Mount a Volume Set

with MNT$_SHANAM, MNT$_SHANAM Item Code

shadowed, Shadow Sets, Bound Volume Sets, and Stripe Sets

virtual unit item descriptor, Using $MOUNT to Mount Volume Sets

Volume shadowing

disabling, Guidelines for Using Volume Shadowing Parameters
enabling, Guidelines for Using Volume Shadowing Parameters

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