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HP OpenVMS Systems Documentation

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Volume Shadowing for OpenVMS


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F
F$GETDVI lexical function
    item names
FDDI (Fiber Distributed Data Interface)
    massively distributed shadowing
Fiber Distributed Data Interface
    See FDDI
Files-11 volume structure
    shadowing support
Forced errors
    checking the SCSI NOFE characteristics
/FORCE_REMOVAL qualifier
G
Generation number
    copy operation
GRPNAM privilege
    required for DISMOUNT command
    required for MOUNT command
H
Hardware environment
Host-based adapter
HSC (hierarchical storage controller)
    disabling performance assists
I
/INCLUDE qualifier
INITIALIZE command
    /ERASE qualifier
    /SHADOW qualifier
Initializing
    disk volumes
Installations
    See also License registrations
    Volume Shadowing for OpenVMS
Item codes
    for creating and mounting a shadow set
    for creating and mounting a volume set
    to add to a shadow set
    with SYS$GETDVI system service
    with SYS$MOUNT system service
L
LANCP databases
    example of a satellite node
License registrations
    capacity #1
    capacity #2
    per disk #1
    per disk #2
    volume shadowing
M
Mass storage control protocol
    See MSCP
Member units
    backing up #1
    backing up #2
    crash dumping to system disk
    mounting
    requirement for nonzero allocation class
Members
    adding
    initializing
    on satellite nodes
Membership
    adding a new disk
    data consistency
    during steady state
    transitions during copy operations
    transitions during merge operations
    transitions during minimerge operations
/MEMBER_TIMEOUT qualifier
Merge operations
    after a system failure
    assisted
        performance
    automatic throttling
    controlling with the SHADOW_MAX_COPY parameter
    example
    multiple simultaneous
    purpose
    transitions in shadow set membership
    unassisted
Messages
    displayed for unregistered nodes
    mount verification
    OPCOM
    shadow server #1
    shadow server #2
    system service
    VOLPROC
Minicopy operations
    definition
    getting a dump file
    performance
    purpose
    required steps
    restrictions
    starting
Minimerge operations
    actions during system failure
    after a system failure #1
    after a system failure #2
    configuring for system disk
    controllers supporting
    disabling
    disabling on HSC controller
    enabling
    overview
    performance #1
    performance #2
    write log entries
Mirroring
    disks
MNT$_SHAMEM item code
MNT$_SHANAM item code
MODPARAMS.DAT file
    editing in an OpenVMS Cluster
    example
    setting parameters in
MOUNT command
    adding shadow set members
    /CLUSTER qualifier #1
    /CLUSTER qualifier #2
    /CLUSTER qualifier #3
    /COPY qualifier
    creating a write bitmap
    format
    /INCLUDE qualifier
    /NOASSIST qualifier
    /NOMOUNT_VERIFICATION qualifier
    /OVERRIDE=IDENTIFICATION qualifier
    /OVERRIDE=SHADOW_MEMBERSHIP qualifier
    qualifiers #1
    qualifiers #2
    qualifiers #3
    reconstructing shadow sets with /INCLUDE
    required privileges #1
    required privileges #2
    starting a write bitmap
    /SYSTEM qualifier
Mount utility
    See MOUNT command
Mount verification
    messages
Mounting
    devices
    shadow sets
    virtual units
    volume sets
MSCP (mass storage control protocol)
    DCD commands
    server
    serving a shadow set
    supported devices
MVTIMEOUT parameter
/MVTIMEOUT qualifier
N
Naming conventions
    devices
    shadow sets
    virtual units
NOFE (no forced error bit)
/NOMOUNT_VERIFICATION qualifier
O
OPCOM (Operator Communication Manager)
    messages
OpenVMS Cluster systems
    disaster-tolerant clusters
        managing shadow set members
    enhanced shadowing performance
    interprocess communication
    maximum number of shadow sets
    mounting shadow sets #1
    mounting shadow sets #2
    multiple-site clusters
        shadowing across
    providing high data availability
    requirement for nonzero allocation class
    shadowing across
    updating system parameters
OPER privilege
    required for MOUNT command
Operating systems
    upgrading on a shadowed system disk
/OVERRIDE=IDENTIFICATION qualifier
/OVERRIDE=SHADOW_MEMBERSHIP qualifier
P
PAKs (Product Authorization Keys)
    registering
Parameters
    See System parameters
Performance
    assisted copies #1
    assisted copies #2
    assisted copies #3
    assisted merge operations
    automatic merge throttle
    controlling copy operations with SHADOW_MAX_COPY
    for read I/O requests
    merge assists
    minimerge
    shadow set
    steady state
    transient state
    write log entries
Performance assists
    copy operation
    merge operation
Preferred path
    setting for controllers
Privileges
    OPER
    SYSNAM #1
    SYSNAM #2
    VOLPRO
Product Authorization Keys
    See PAKs


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