Inevitably storage equipment ages or fails, and it must be replaced. SANsymphony-V simplifies the process of migrating data to new equipment without many of the difficulties, delays and stresses usually associated with these moves. Often the transition can take place during normal working hours without disrupting applications. The product has also been designed to facilitate the maintenance and upgrade of the servers where the DataCore software runs, while applications continue to run uninterrupted.
SANsymphony-V provides facilities to migrate data currently contained within virtual disk pools to newer storage devices. SANsymphony-V will also migrate data from storage devices that were not originally managed by SANsymphony-V. In either case, the migration is greatly simplified and can be accomplished, in both scenarios, with no downtime.
The first method of data migration uses pass-through mode. This mode makes no modifications to the underlying storage device. The original volumes are passed through the SANsymphony-V node to the application servers. No other fabric or network changes are required. The application servers see the original volumes as they existed and continue processing normally. Now that SANsymphony-V resides in the data path, features such as high-speed caching, synchronous mirroring, snapshot, and replication can be utilized. Ideally, the pass-through storage device would be migrated to a native SANsymphony-V virtual disk pool to leverage the full feature set.