Limitations of Clustering

  1. Date & Time properties must be same on HyWorks controllers and database servers, if database is running on separate server than Controller. Time properties like Date, Time, TimeZone, format and NTP server if configured. The properties must be synchronized before installing HyWorks controller.

  2. With data synchronization happening in 60 seconds duration, configuration changes (happened between last sync and server down) may get lost, which may cause

    1. Most recent session disconnection happened in that duration

    2. Data duplication if the same configuration is done on new primary server, once the old primary comes up from down state

  3. Banner and HyWorks Client upgrade configurations which are handled using files are currently not synced and thus may either show alerts or change the banners. Client may show the version mismatch alerts.

  4. HyWorks Controller server version should be same. If controller versions are not same ,then may cause following :

    1. Data synchronization will not take place.
    2. if version of controller are not same for long duration , database may never will be synced and cluster needs to be rebuilt.
    3. Active - Active configuration requires back end manual configurations and it is not supported via default installers. Please refer section HyWorks Sizing , to find out if Active - Active configuration is required. Contact Support for further details.