QSAN XF4 Series

The QSAN XF4 series (XF4226) is the scalable mid-tier NVMe block array. Purpose-built for growing Australian enterprises seeking high-performance block storage with expansion flexibility, the XF4 carries the same XEVO 3 OS, mirrored firmware architecture, and active-active controllers as the flagship XF5 — but at a price point that doesn't require flagship budgets. 26-bay NVMe in 2U with 99.9999%+ availability.

QSAN positions the XF4 for virtualisation at scale, media production, and high-speed IT infrastructure. The mirrored firmware design keeps services uninterrupted during a controller event; the second controller's firmware is already in sync. XEVO 3 brings the full block-storage data-services suite — RAID EE for fast rebuilds, QThin space reclamation, QSnap up to 4096 snapshots per system, QReplica sync and async replication with traffic shaping. Cache-to-Flash protection via M.2 modules plus Battery Backup Module keeps data safe through power events.

The shared hardware platform with the [XN4 series](/vendors/qsan/products/xn4-series) unified array gives partners a clean future-proofing story. For Australian customers replacing Dell PowerStore 500T or NetApp AFF A150/A250 entry, the XF4 delivers comparable performance with materially lower total spend over five years — particularly when third-party drive support is factored in.