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Cross-platform Data Sharing in VVR

Cross-platform Data Sharing (CDS) allows the sharing of data between heterogeneous systems where each system has direct access to the physical devices used to hold the data. Sharing in this manner requires the capability to share the devices at various levels in the software hierarchy.

Veritas Volume Replicator (VVR) is now CDS compliant. VVR uses CDS format to support the following functionality:

• Ability to migrate data between heterogeneous systems (either on the Primary or the Secondary) where each system has direct access to the physical devices used to hold the data. Note that CDS does not support simultaneous use of data from more than one platform.

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    Caution   Stop all the applications working on that disk group before migrating data between hosts. Failure to do so may result in data loss.

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• Ability to replicate data between heterogeneous systems as a result of CDS. The Primary host could be a different platform from the Secondary host, and each host would be able to access the data in the CDS format.

The Storage Replicator Log (SRL) is created in a CDS format. Starting with the 5.0 release, the SRL is created in the CDS format, regardless of the disk group type. When you upgrade from a previous release of VVR to 5.0, the upgrade process dissociates the SRL and creates a new SRL in CDS format.

Refer to the Veritas Storage Foundation Cross-Platform Data Sharing Administrator's Guide for more information.