Data Migration




Conventional Migration

The vendor installs a migration appliance (a computer with special software installed) that connects to the DICOM interfaces of the source and destination PACS, and transfers the data. The migration appliance takes an inventory of the source PACS using DICOM C-FIND queries, and directs the transfer of data until it is complete. The Migration Appliance may have the ability to update the format of old DICOM objects thus retrieved, but can only access information in the source PACS that is presented on the source PACS' DICOM interface. Information such as saved window/level settings is often lost. The more sophisticated of conventional migration appliances may reconcile retrieved data against demographic or order information separately obtained from the Radiology Information System.

Conventional Migration is slow: It typically requires 20-30% of the time it took to acquire the data. For a five-year-old PACS, conventional migration can take a year to 18 months. "Smart" migration appliances can intelligently optimize the order of migration, but the old system must still be kept operational during the entire migration period.

Rapid Migration

The migration services vendor brings in a migration appliance that directly reads the database and storage media of the source PACS, processes the image data, and transmits it to the new PACS at rates up to 1 Terabyte per day. Usually this process requires a significant on-site presence of the migration vendor's team during the migration process, and a sizable amount of computing hardware in the migration appliance.

Rapid Migration requires that the migration vendor understand the internal organization of the source PACS. There is a significant investment by the vendor in tooling for each type of source PACS, making the economics of this approach poor for migration providers that are captive to a single destination PACS vendor. Migratek is the only migration services provider offering non-custom Rapid Migration services.