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Introduction to FAXbox: A Simple XRootD Server for ATLAS Connect Users

FAXbox is a user-friendly XRootD server designed for analysis job outputs, utilizing a high-performance, scalable, and distributed storage system built on Ceph. Tailored for ATLAS Connect users and Tier 3 users lacking dedicated storage, FAXbox is equipped with robust specs, including Dell R510 servers and 420 TB of raw disk capacity. Users can maximize efficiency with minimal setup via SSH. Future enhancements promise improved performance with additional servers, networking upgrades, and automatic access authentication. Stay tuned for updates on group quota management and web statistics!

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Introduction to FAXbox: A Simple XRootD Server for ATLAS Connect Users

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  1. FAXboxTechnicals Lincoln Bryant Computation & Enrico Fermi Institutes University of Chicago

  2. About • What is FAXbox? • A dead-simple XRootD server for analysis job outputs. • Built on Ceph, a fast, scalable, distributed filesystem. • Integrated into ATLAS Connect. • Who is it for? • ATLAS Connect users and Tier 3 users with no dedicated storage

  3. Specs • (2) Dell R510s • (2) Xeon 5660 CPUs • 128 GB of RAM • 10 Gb NICs • (4) MD1200 shelfs with 4 TB disks • ~420 TB of raw disk, with about ~210 TB usable. • Single XRootD door

  4. Is it performant? • Performance nearly saturates single 10Gb line • Benchmarks from October. • We’ve made optimizations since then, expect write performance for large files to have increased

  5. OK, so how do I use it? • Get yourself an ATLAS Connect account • SSH to login.usatlas.org, and setup XRootD from CVMFS • Once that’s done, you’re ready to go! • Basically the same same process for your jobs. [lincolnb@login ~]$ export ATLAS_LOCAL_ROOT_BASE=/cvmfs/atlas.cern.ch/repo/ATLASLocalRootBase [lincolnb@login ~]$ source ${ATLAS_LOCAL_ROOT_BASE}/user/atlasLocalSetup.sh [lincolnb@login ~]$ localSetupXRootD [lincolnb@login ~]$ xrdcp -fv output.8g root://faxbox.usatlas.org://user/lincolnb/output.8g [xrootd] Total 8192.00 MB |====================| 100.00 % [116.6 MB/s]

  6. What’s next for FAXbox? • Hardware upgrades! More performance. • We think we can get more performance out of Ceph with 20Gb bonds on the network. • Additional servers could boost the performance too. • More XRootD doors? • Ceph updates! Three big updates we’re looking forward to: • Filesystem ACLs • Quotas • Erasure encoding  More storage bang for the buck!

  7. What’s next for FAXbox? • Automatically authenticated access from ATLAS Connect • X.509 certificate authority runs on ATLAS Connect • Jobs submitted from ATLAS Connect have an X.509 proxy injected on user’s behalf. • XRootD on FAXbox has gridmap file (or GUMS) configured to allow access from ATLAS Connect DNs. • Designed to be completely transparent to end-users.

  8. What’s next for FAXbox? • X.509 Authentication (Grid Certs) • Add your X.509 certificate on the ATLAS Connect website • Group quota management • PIs or designated managers can manage quotas for working groups. • Web statistics • See group usage statistics from the web.

  9. What’s next for FAXbox? • Globus Endpoint • Access your data from your laptop through the Connect portal.

  10. Questions?

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