Dell DR Series System Administrator Guide

This topic describes the differences between data streams and application connections.

Streams can be likened to the number of files written at the same time to a DR Series system. The DR Series system tracks the number of files being written and assembles the data into 4MB chunks before processing that section of the data. If the stream count is exceeded, the data is processed out of order and overall deduplication savings can be affected. For details on maximum stream count, see the Dell DR Series System Interoperability Guide .

Connections are created by applications; within a single connection, there can be multiple streams depending on the application and how many backup jobs are running in parallel over that single connection. Replication can use up to 16 streams over a single port using one connection.