/POLICY=[NO]MINICOPY[=(OPTIONAL)], REQUIRE_MEMBERS,
       [NO]VERIFY_LABEL

    Controls the setup and use of shadow sets. For more information
    about volume shadowing, see the HP Volume Shadowing for OpenVMS.

 The following table lists the keywords for this qualifier:

    Keyword        Description

    [NO]MINICOPY   Controls the setup and use of the shadowing
    [=OPTIONAL]    minicopy function.
    (Alpha/Integrity
    servers        Requires LOG_IO (logical I/O) privilege to create
    only)          bitmaps.

                   The meaning of the keyword [NO]MINICOPY[=OPTIONAL]
                   for the MOUNT/POLICY qualifier depends on the
                   status of the shadow set, as follows:

                   1. If the shadow set is not mounted, either
                      on a standalone system or on any cluster
                      member, and MINICOPY=OPTIONAL is specified,
                      the shadow set is mounted and a write bitmap
                      is created. The write bitmap enables a
                      shadowing minicopy operation. You must specify
                      /MOUNT/POLICY=MINICOPY[=OPTIONAL] on the
                      initial mount of a shadow set, either on a
                      standalone system or in a cluster, to enable
                      the shadowing minicopy operation.

                      The OPTIONAL keyword allows the mount to
                      continue, even if the system was unable to
                      start the write bitmap. Likely reasons for the
                      bitmap to fail to start properly include an
                      improperly dismounted shadow set, a shadow set
                      that requires a merge operation, and various
                      resource problems. If the OPTIONAL keyword
                      is omitted and the system is unable to start
                      the write bitmap, the shadow set will not be
                      mounted.

                      If you specify the /POLICY=MINICOPY=OPTIONAL
                      qualifier and the shadow set was already
                      mounted on another node in the cluster without
                      the /POLICY=MINICOPY[=OPTIONAL], the MOUNT
                      command succeeds but a write bitmap is not
                      created.

                      If NOMINICOPY is specified, the shadow set is
                      mounted but a write bitmap is not created.

                   2. If a former member of the shadow set is
                      returned to the shadow set, which has
                      minicopy enabled, then a minicopy is started
                      instead of a full copy. This is the default
                      behavior and will occur even if you omit
                      /POLICY=MINICOPY[=OPTIONAL]. If a minicopy
                      is successfully started and then fails for some
                      reasons, a full copy is performed.

                      If a minicopy cannot be started and the keyword
                      OPTIONAL was omitted, the mount will fail.

                      If NOMINICOPY is specified, then no minicopy is
                      performed, even if one is possible.

    REQUIRE_       Controls whether every physical device specified
    MEMBERS        with the /SHADOW qualifier must be accessible when
                   the MOUNT command is issued in order for the MOUNT
                   command to take effect. The proposed members are
                   either specified in the command line or found on
                   the disk by means of the /INCLUDE qualifier.

                   The behavior, without this qualifier, is that
                   if one or more members is not accessible for any
                   reason (such as a connectivity failure), then the
                   virtual unit will be created with the members that
                   are accessible.

                   This option is especially useful in the recovery
                   of disaster-tolerant clusters because it ensures
                   that the correct membership is selected after an
                   event.

    [NO]VERIFY_    Require that any member that is going to be added
    LABEL          to the shadow set must have a volume label of
                   'SCRATCH_DISK'.

                   This will help insure that the wrong disk is not
                   added to a shadow set by mistake. If VERIFY_
                   LABEL is going to be used, then the disk that
                   is going to be added to the set must be either
                   initialized with the label 'SCRATCH_DISK' or a SET
                   VOLUME/LABEL must be performed.

                   The default behavior is NOVERIFY_LABEL, which
                   indicates that the volume label of the copy
                   targets will not be checked.