The input keylist fully specifies the processing to be done by a strategy server. When a strategy server is complete it outputs a status integer and a results keylist. The status integer and output keylist are then passed back to pe. All data that are produced by the production computational servers are input and output in DSDS managed storage. The managed storage consists of a disk farm and DD2 tape storage.
Data migrates to and from disk and tape according to demand and age of data.
The analysis modules request data from the database via PE via abstract dataset names. When a module is complete, its output can be cataloged as a dataset name and queued for archiving on tape. Cartridges can be provided from storage shelves as needed. It communicates with its servers and other processes using PVM messages. Maximizing throughput was secondary.