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Administering
Learn how to administer the product.
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.
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.
Store-and-forward
The MultiSite store-and-forward facility (the shipping server) is a file-transfer service that automates the transport phase of replica creation and synchronization. It can handle packets of any size (up to the maximum packet size specified in the shipping.conf file on Linux™ and the UNIX™ system or the MultiSite Control Panel on Windows™), can route files through a series of MultiSite hosts (one hop at a time), and includes support for handling data-communications failures.
Packet differentiation with storage classes
You can configure the store-and-forward facility to handle packets in different ways. Each packet can be assigned to a storage class, and each storage class can have its own storage bay, return bay, and expiration period.

Packet differentiation with storage classes

You can configure the store-and-forward facility to handle packets in different ways. Each packet can be assigned to a storage class, and each storage class can have its own storage bay, return bay, and expiration period.

Note: On Linux™ and the UNIX™ system, a storage class can be assigned several storage and return bays; in this case, the shipping server uses the size of the packet to select one of the bays. Conversely, several storage classes can share one or more bays.

You can use multiple storage classes to segregate the packets for VOBs that belong to different groups. By adjusting the operating system permissions on the storage bay and return bay directories, you can protect the packets from unauthorized use. You can also use a separate storage class when you use the store-and-forward facility to transfer non-MultiSite files between sites.

For more information about storage classes, see the shipping.conf and MultiSite Control Panel reference pages.