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Administering
Learn how to administer the product.
Administering HCL VersionVault MultiSite
Learn to configure and manage the HCL VersionVault MultiSite environment to support development activities at different locations.
Replica synchronization
Replica synchronization uses the same export-transport-import procedure that is used during replica creation.
Synchronizing VOB replicas more efficiently
You can configure synchronization updates to send only the necessary operations to another replica. Although sending an operation multiple times does no harm, packet creation and transmission is more efficient if you exclude operations that have already been imported at the receiving replica.
Example of increased efficiency
This is an example of using chepoch –actual to increase efficiency in synchronization operations.

Administering
Learn how to administer the product.
- Administering HCL VersionVault
  Learn about performing administrative tasks for an HCL VersionVault community including managing software licenses, user and group accounts, VersionVault server and client hosts, shared data, and the network that connects them.
- Administering platforms for HCL VersionVault
  Learn how to perform HCL VersionVault administrative tasks on supported platforms.
- Administering HCL VersionVault MultiSite
  Learn to configure and manage the HCL VersionVault MultiSite environment to support development activities at different locations.
  - Introduction
    HCL VersionVault MultiSite adds a powerful capability to HCL VersionVault. With MultiSite, developers at different locations can use the same HCL VersionVault versioned object base (VOB). For HCL VersionVault, 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 HCL VersionVaultHCL Compass MultiSite, you need to plan your implementation.
  - MultiSite command set
    This section summarizes the commands for HCL VersionVault MultiSite and HCL VersionVault that display HCL VersionVault MultiSite information. There are a series of MultiSite commands and API functions that display or modify 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 HCL VersionVault. 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.
    - Assumption of successful synchronization
      The export and import phases of synchronization always occur at different times. A sending replica does not require acknowledgment from a sibling replica that a packet has been received and processed successfully. Instead, the sending replica assumes success. This assumption enables an optimization: subsequent updates from a replica do not include the data sent in previous updates.
    - Manual synchronization
      You can manually synchronize replicas by entering explicit syncreplica commands.
    - Automated synchronization
      You can use scripts and utilities to automate all phases of synchronization.
    - Listing synchronization history
      Use the lshistory command or the History Browser list the history of a VOB replica.
    - Synchronizing VOB replicas more efficiently
      You can configure synchronization updates to send only the necessary operations to another replica. Although sending an operation multiple times does no harm, packet creation and transmission is more efficient if you exclude operations that have already been imported at the receiving replica.
      - Example of increased efficiency
        This is an example of using chepoch –actual to increase efficiency in synchronization operations.
      - Example of decreased efficiency
        This example demonstrates circumstances under which running chepoch –actual can decrease efficiency in your synchronization operations.
  - Administering replicas
  - Using MultiSite for VOB backup and interoperability
    You can use HCL VersionVault 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 an HCL VersionVault 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.

Example of increased efficiency

This is an example of using chepoch –actual to increase efficiency in synchronization operations.

You have three replicas in a VOB family, and a subset of the synchronization pattern and schedule is shown in the following figure. All replicas use receipt handlers, so incoming packets are imported immediately. First, replica sanfran_hub sends a packet to replica boston_hub. Next, boston_hub sends a packet to bangalore. This packet includes operations from sanfran_hub.

Partial synchronization export pattern and schedule between sanfran_hub, boston_hub, and bangalore — Figure 1. Partial synchronization export pattern and schedule

At 8:00 GMT, sanfran_hub sends a packet to bangalore. This packet contains operations originating at sanfran_hub that bangalore has already received from boston_hub. In this case, use the command chepoch –actual bangalore at sanfran_hub before generating an update packet for bangalore. When you generate the packet, the operations already imported at bangalore are excluded from the packet.

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