Data Transfer Services DTS Mission Statement The Data

Data Transfer Services (DTS) Mission Statement: The Data Transfer Services (DTS) group facilitates data movement and management for the community by maintaining and continuously evolving XSEDE data services and resources. In Practice: • Network monitoring (perf. SONAR, PSC Speed Page) • Metric collection • Grid. FTP log collection and analysis • Maintain Internet 2 relationship • Investigate new data transport methods (ex – Zettar) • Develop / document best practices • Community engagement (user surveys, direct collaboration) 1

Consultation Services The DTS group is offering consultation services to assist in optimizing and troubleshooting data workflows to/from XSEDE Service Providers. • Provides an opportunity to work directly with DTS staff during a short-term engagement (3 -4 months) • Projects could include network performance analysis, data transfer node design/configuration, etc. • DTS group would work with the site to refine project scope (based on staff availability and overlap with relevant skill sets) • Regularly scheduled meetings (typically online) to discuss project tasks and assess progress 2

Beta Project (University of Colorado) Problem: User complaints about transfer performance with their local 40 Gb Globus DTNs Over the course of the project, the DTS group: • Provided references to ESNet DTN recommendations • Helped resolve issue with the grid-mapfile configuration • Ran Globus Online transfer tests (and compared results to similar tests at University of Tennessee) • Drilled down into network performance issues Resolution: Identified heavy load on existing DTN hardware, and also found a network bottleneck that resulted in DTN traffic getting funneled through a single 10 Gb link. UC also developed plans to purchase new DTN hardware and make change to VLAN configuration to eliminate bottleneck. 3

Interested? Send an email to Rick Mohr <rmohr@utk. edu> and CC Tim Boerner <tboerner@illinois. edu> and Tabitha Samuel <tsamuel@utk. edu>. Include “DTS Consultation” in the subject line. In the email, please include: • Name of your organization • Project contact names and email addresses • Short description of the proposed work You may also submit an RT ticket to the XSEDE help desk who will route it to the DTS group. The DTS group will evaluate all proposals and contact submitters about acceptance status. 4