When a copy or merge operation is needed on a shadow set that is
    mounted on more than one system, the shadowing driver attempts
    to perform the operation on a system that has a local connection
    to all the shadow set members. Shadowing implements the copy or
    merge operation by adding a time delay based on the number of
    shadow set members that are MSCP-served to the system. No delay
    is added for local members; a system with all locally accessible
    shadow set members usually performs the copy or merge before a
    system on which one or more members is served (and therefore is
    delayed) does.

    SHADOW_PSM_RDLY allows the system manager to adjust the delay
    that shadowing adds. By default, the delay is 30 seconds for each
    MSCP-served shadow set member. The valid range for the specified
    delay is 0 through 65,535 seconds.

    When a shadow set is mounted on a system, the value of SHADOW_
    PSM_RDLY is used as the default shadow set member recovery delay
    for that shadow set. To modify SHADOW_PSM_RDLY for an existing
    shadow set, see the SET SHADOW/ /RECOVERY_OPTIONS=DELAY_PER_
    SERVED_MEMBER=n command in VSI Volume Shadowing for OpenVMS.