The 11th HPC I/O in the Data Center Workshop (HPC-IODC’25) in conjunction with ISC High Performance. https://hps.vi4io.org/events/2025/iodc Over 10 years HPC IODC had constantly attracted 40 attendees. == Workshop overview == Managing large-scale scientific data is a significant challenge for both scientists and data centers. The storage and file systems deployed within a data center must meet users' requirements for data integrity and high performance across heterogeneous and concurrently running applications. With the emergence of new storage technologies and layers in the memory hierarchy, the complexity of data management is increasing. To effectively manage the data load within a data center, I/O experts must understand how users expect to utilize these new storage technologies and what services they should provide to enhance user productivity. This workshop brings together I/O experts from data centers and application workflows to share current practices, issues, and obstacles for both hardware and software stacks, as well as R&D efforts to overcome these challenges. We aim to provide a systems-level perspective on these discussions. The workshop content is built on the following tracks: 1) talks by I/O experts – Share your experiences and solutions for data center workloads. 2) research paper track – Submit original research papers on state-of-the-practice and research related to I/O in the data center. 3) student mentoring sessions - Students are encouraged to submit abstracts and receive constructive feedback from the community to advance their research. All contributions are peer-reviewed and require submission through EasyChair: https://easychair.org/conferences/?conf=hpciodc25 == Track: Talks by I/O experts == We invite submissions on the following topics, among others: * Operational aspects of data centers, such as infrastructure, management, and best practices * Successful solutions for specific data center workloads in production, including case studies and lessons learned We also welcome industry talks that focus on operational issues, challenges, and experiences. Please note that marketing-oriented presentations will not be considered. We are interested in hearing about real-world problems, solutions, and insights that can benefit the community. If you are interested in participating, please submit a brief abstract (max 1/2 page) outlining your talk, along with a short bio. This will help us understand the content and relevance of your presentation. Abstract Deadlines: * Submission deadline: 2025-04-12 AoE * Author notification: 2025-04-31 == Track: research papers == Research papers will be published in the open-access Journal of High-Performance Storage (https://jhps.vi4io.org/). The research track accepts papers covering state-of-the-practice and research dedicated to storage in the data center. We invite submissions of original research papers that cover state-of-the-practice and innovative research in data center storage. Papers should not exceed 12 pages in length (excluding references). The presentation time for accepted papers will be determined based on the paper's novelty, controversiality, and relevance, as well as author preference and reviewer feedback. While all accepted papers will be included in the workshop proceedings, we prioritize discussions on cutting-edge and thought-provoking topics to maximize the workshop's impact and engagement. === Topics === The relevant topics for papers cover all aspects of data center I/O including: * Application workflows * User productivity and costs * Performance monitoring * Dealing with heterogeneous storage * Data management aspects * Archiving and long-term data management * State-of-the-practice (e.g., using or optimizing a storage system for data center workloads) * Research that tackles data center I/O challenges * Cloud/Edge storage aspects === Paper Deadlines === * Submission deadline: 2025-04-03 AoE * Author notification: 2025-04-31 * Workshop: 2025-06-13 == Student Mentoring Sessions == To support the development of the next generation of data-related practitioners and researchers, we invite students to submit abstracts aligned with the workshop topics. This is a unique opportunity for students to receive feedback and guidance from experienced professionals in the field. Selected students will be given a 10-minute presentation slot to share their research, followed by a 10 minute discussion with the workshop attendees. This interactive session will focus on providing constructive feedback and exploring ways to advance the student's research, including potential impact, alternative research directions, and future collaboration opportunities. To help students further develop their research and publication skills, we encourage them to work with a designated mentor (shepherd) to prepare a paper for submission to the Journal of High-Performance Storage (JHPS) based on the feedback received during the workshop. This guided process will provide students with valuable experience in writing and publishing research papers, and help them establish connections with established researchers in the field. == Organizers == * Julian Kunkel (Georg-August-Universität Göttingen/GWDG) * Jay Lofstead (Sandia National Laboratories) * Jean-Thomas Acquaviva (DDN)