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DevOps Code ClearCase version 11.0.0
  1. Home icon
  2. Welcome
  3. Administering

    Learn how to administer the product.

  4. Administering DevOps Code ClearCase® MultiSite

    Learn to configure and manage the DevOps Code ClearCase® MultiSite and Rational® ClearQuest® MultiSite environments to support development activities at different locations.

  5. Implementation planning

    Before you install and use DevOps Code ClearCase® MultiSite, you need to plan your implementation.

  6. MultiSite use model

    There are different aspects of your MultiSite use model that affect the implementation and deployment of a MultiSite environment.

  7. Use of MultiSite for VOB backups

    You can use MultiSite as part of your VOB backup strategy.

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  • Overview

    Learn general information about the product.

  • Installing

    Learn how to install the product.

  • Upgrading and migrating

    Learn how to upgrade and migrate data for the product.

  • Administering

    Learn how to administer the product.

    • Administering DevOps Code ClearCase®

      Learn about performing administrative tasks for a DevOps Code ClearCase® community including managing software licenses, user and group accounts, ClearCase server and client hosts, shared data, and the network that connects them.

    • Administering platforms for DevOps Code ClearCase®

      Learn how to perform DevOps Code ClearCase® administrative tasks on supported platforms.

    • Administering DevOps Code ClearCase® MultiSite

      Learn to configure and manage the DevOps Code ClearCase® MultiSite and Rational® ClearQuest® MultiSite environments to support development activities at different locations.

      • Introduction

        DevOps Code ClearCase® MultiSite and add a powerful capability to DevOps Code ClearCase and . With MultiSite, developers at different locations can use the same DevOps Code ClearCase versioned object base (VOB) or . For DevOps Code ClearCase, each location (site) has its own copy (replica) of the VOB. At any time, changes made in one replica can be sent in update packets to other replicas. You can manage replicas by using the command-line tools.

      • MultiSite operation
      • Implementation planning

        Before you install and use DevOps Code ClearCase® MultiSite, you need to plan your implementation.

        • MultiSite installation

          MultiSite is installed as an optional product component during the DevOps Code ClearCase® installation.

        • MultiSite licensing

          A MultiSite license is required to access an object in a replica by a MultiSite command or GUI, by a DevOps Code ClearCase® command or GUI, or by a standard operating system command.

        • Shipping server use with DevOps Code ClearCase® and Rational® ClearQuest®

          If you use both DevOps ClearCase® MultiSite and DevOps ClearQuest® MultiSite, you use the same shipping server for both products. The shipping server is installed when you install DevOps ClearCase MultiSite.

        • DevOps Code ClearCase® use model

          Before development work is started in any VOB, the project manager and administrator must define the DevOps Code ClearCase® use model. For example, the project manager must specify the branches, labels, and triggers that are used for development and integration work.

        • MultiSite use model

          There are different aspects of your MultiSite use model that affect the implementation and deployment of a MultiSite environment.

          • Type of administration

            You must decide how much control the individual sites will have over their replicas. Your choices are centralized administration, individual administration, or some combination of the two.

          • MultiSite, time, and time zones

            In MultiSite, time stamps are stored in Universal Coordinated Time (UTC) and are printed to reflect the local time.

          • Time rules in config specs

            Time rules in config specs are not absolute. The version selected by a time rule can change after an update packet is imported at your replica.

          • Mastership strategy
          • Identities and permissions strategy for VOB replicas

            A replica can preserve identities and permissions, preserve permissions only, or preserve neither identities nor permissions (nonpreserving).

          • Managing rolemaps, policies, and object-rolemap bindings

            There are several administrative consequences arising from the differences between policy mastership and rolemap mastership, and also from the replication mode of the VOB family.

          • Group selection in replicas according to feature level

            The group selection algorithm for VOBs at feature level 8 is different from the feature level 7 algorithm.

          • Synchronization

            The main factors to consider when planning replica synchronization are method, scheduling, and pattern.

          • Synchronization pattern

            The synchronization pattern for a family defines which replicas exchange update packets and the direction of exchange.

          • Synchronization schedule

            The synchronization schedule for a family defines when replicas in the family send and receive updates. The schedule is affected by many factors, including the rate of development at different sites, the connections among sites, and whether you use MultiSite as a backup strategy.

          • Use of MultiSite for VOB backups

            You can use MultiSite as part of your VOB backup strategy.

          • Scrubbing parameters for replicas

            When a command makes a change to a replica, an entry is recorded in the replica’s operation log. Also, when you export an update packet, an export_sync record is created for each target replica. These records are used by the recoverpacket command to reset a replica’s epoch number matrix.

          • Path names that contain spaces

            On computers running Windows™, if the path name of a receipt handler or a shipping order contains spaces, DOS short name resolution must be enabled for the file system on which the receipt handler or shipping order is located. This property is enabled by default. If this property is not enabled, the shipping server cannot invoke the receipt handler or process the shipping order.

        • Responsibilities of MultiSite administrators

          The MultiSite administrator must perform the tasks described in this topic.

      • MultiSite command set

        This section summarizes the commands for DevOps ClearCase® MultiSite and DevOps ClearCase that display DevOps Code ClearCase MultiSite information.

      • Packet transportation methods and configuration

        The method you choose for transporting packets between replicas depends on connectivity. If your replicas do not have IP connectivity, you must use a file-based transport method. If your replicas have connectivity, you can use the store-and-forward facility.

      • Feature levels

        Feature levels allow different replica hosts in a VOB family to run different versions of DevOps Code ClearCase®. You can raise the feature level of either a single replica host or an entire VOB family.

      • Creating VOB replicas

        Before creating a replica, you must make decisions about branching, mastership, identities and permissions preservation, and method of packet delivery.

      • Replica synchronization

        Replica synchronization uses the same export-transport-import procedure that is used during replica creation.

      • Administering replicas
      • Using MultiSite for VOB backup and interoperability

        You can use DevOps Code ClearCase® MultiSite to back up a VOB and to provide access to VOBs in a heterogeneous network.

      • Troubleshooting MultiSite operations

        When you encounter a situation where running a DevOps Code ClearCase® MultiSite command produces an unexpected result, or produces a warning or error message, the information in this section can assist you in troubleshooting the problem.

  • Developing

    Learn how to develop software with DevOps Code ClearCase® and ClearCase Remote Client.

  • Managing change and releases

    Learn how to manage change and release in the product.

  • Integrating

    Learn how to integrate DevOps Code ClearCase® with other products.

  • Tutorials

    Complete tutorials with specific learning objectives for the product.

  • Extending product function

    Learn how to extend the product.

  • Reference

    Review reference information for the product.

  • Glossary
 Feedback

Use of MultiSite for VOB backups

You can use MultiSite as part of your VOB backup strategy.

For more information, see Using MultiSite for VOB backup and interoperability.

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