9–11 Mar 2026
CERN
Europe/Zurich timezone
There is a live webcast for this event.

Unlocking SMR Capacity in EOS Using Zoned XFS

10 Mar 2026, 11:00
20m
31/3-004 - IT Amphitheatre (CERN)

31/3-004 - IT Amphitheatre

CERN

105
Show room on map

Speaker

Hans Holmberg (Western Digital Research)

Description

Recent developments in XFS have introduced native support for zoned storage devices such as Shingled Magnetic Recording (SMR) drives, offering a robust and higher‑performance alternative to BTRFS  for this class of hardware. With Zoned XFS  EOS can now efficiently leverage the additional 20–25% storage capacity provided by SMR HDDs.

This presentation will give an overview of the architectural changes made to XFS to support zoned storage, demonstrate its performance characteristics, and provide a practical, hands‑on guide for setting up, using and tuning XFS file systems on SMR HDDs.

Author

Hans Holmberg (Western Digital Research)

Co-author

Mr Christoph Hellwig (Western Digital Research)

Presentation materials