Purpose of LSST Long-Haul Networks
Provide reliable connectivity of sufficient bandwidth between all LSST Observatory sites (Base, Archive, Headquarters, Data Access Center, Satellite Processing, and Camera sites) to meet operational requirements.
Network Engineering and Testing Mailing List
The LSST networks are being engineered and tested via a distributed team with representatives from the LSST project, as well as the sub-award partners providing networks, and their subcontractors. In order to facilitate communications among this team, a mailing list has been created and all people working on LSST Networks should subscribe to this list:
LSST-End-To-End mailing list
Specifications and Design Documents
Note: access to these linked documents requires an LSST login, submit a request to Jeff Kantor
Data Management System-level network specifications (extracted from LSE-61 Data Management Subsystem Requirements)
180 days MTBF/year
48 hours MTTR/year
Base to Archive nightly data volume (science images and meta-data): 15TB
Amount of time available to transfer data from Mountain to Base to Archive:
Crosstalk-corrected images for Alert Production: 6 seconds to move between 2.6 Gbytes (depending on compression)
Raw images: 24 hours
Note, there is also Observatory Control System and other operational data transferred at night, and there is daytime engineering and calibration traffic potentially at the same volume. Finally, there is periodic data transfer from the Archive to the Base, primarily as a result of annual Data Release Processing. All the data flows and allocated bandwidths are defined in the following documents.
The LSST Long-Haul Networks are further specified in LSE-78 LSST Observatory Network Design
The budgeted cost and schedule of deployment of links and bandwidth, and their utilization is documented in LDM-142 Network Sizing Model
In addition to the top-level documents above, there are documents describing how the LSST Networks are to be tested, verified, and managed:
The LSST Network End-to-End Test Plan defines the plan for development testing and monitoring the LSST networks.
The LSST Observatory Network Verification Plan defines plan for formal verification of the LSST networks.
The LSST Observatory Network Verification Matrix defines requirements and methods for formal verification of the LSST networks.
The LSST Network Operations and Management Plan defines the plan for operating and maintaining the LSST networks as a single integrated process.