The Unidata Internet Data Distribution (IDD) system makes data available to a large University community using a "push" method of distribution.

Real-time data delivery can be stymied by many problems. Among them are hardware and software failures, and configurations problems.

To alleviate many of these problems, Unidata is working to integrate the IDD technology with a new data access system called THREDDS (THematic Realtime Environmental Data Distribution Service). By setting up several THREDDS server sites at IDD nodes, there will be redundant access to all of the data available over the IDD. The IDD already has several redundancies, but with network failures and other data failures, having an archive of data available via THREDDS, and data a particular site misses will be available through any one of the several THREDDS servers.

Each system has its strengths and weaknesses. Combining them will provide users with the ability to make decisions specific data needs.

This paper will discuss the basic aspects of both the LDM and THREDDS servers and how these servers can be configured to provide the maximun data reliability.

The LDM and THREDDS marriage will provide more data reliability, more interoperability, and more data formats than either system alone can provide.