QSAN XF5 Series — Flagship All-NVMe Block Storage
Pure FlashArray performance, materially less spend.
The QSAN XF5 series (XF5226) is the flagship of QSAN's NVMe block storage line — extreme-performance NVMe rated at 50,000 random-write IOPS at 100µs latency (100,000 IOPS at 200µs) on PCIe Gen4. Engineered for mission-critical Australian workloads such as real-time analytics, financial systems, and AI inference, the XF5 delivers tier-1 performance at price points that consistently land 40–50% below Pure Storage FlashArray and Dell PowerStore.
XEVO 3 brings mirrored firmware HA, complete RAID protection (0/1/3/5/6/10/30/50/60 plus N-way mirror plus RAID EE for fast rebuilds), QThin thin provisioning with space reclamation, QSnap snapshots up to 4096 per system, QReplica synchronous and asynchronous replication with traffic shaping. Dual-active SAN controllers with NTB-bus cache mirroring, ALUA, multipath I/O, zero-downtime firmware updates. New host-card options: 2x 32Gb FC SFP28 and 2x 25GbE SFP28 per slot.
QSAN's flash-management story is a structural differentiator: QSLife monitors SSD wear and predicts replacements before they become emergencies; QSRAID optimises endurance across the array. Both are native to XEVO 3 — no bolt-on third-party tooling required. The shared hardware platform with the [XN5 series](/vendors/qsan/products/xn5-series) unified array also gives Australian customers a future-proofing path: the chassis is the same; controllers can be swapped to add file protocols later.






Controllers
Dual active-active controllers (HA) with mirrored firmware
Drive Bays
26-bay NVMe (2.5" U.2 NVMe SSDs) in 2U
Random Write Performance
50,000 IOPS @ 100µs / 100,000 IOPS @ 200µs (PCIe Gen4 NVMe, vendor 2026 spec)
Operating System
XEVO 3 — flash-optimised data management with mirrored firmware HA
Availability
99.9999%+ — fully modular redundant architecture
Networking
2x 32Gb FC SFP28 or 2x 25GbE SFP28 host cards per controller, plus built-in 10GbE iSCSI
Data Services
QThin, QSnap (up to 4096), QReplica sync/async, RAID EE, sync replication for zero RPO
Flash Management
QSLife SSD health, QSRAID endurance, Cache-to-Flash via M.2 + BBU
Hardware Platform
Shared chassis with XN5 series and KS2 (qs_hm_XF52-XN52)
The XF5 lands head-on against Pure Storage FlashArray //X70, Dell PowerStore 1200T, NetApp AFF C800, and HPE Alletra 6000. Pure and NetApp win on polished software ecosystems and SnapMirror / Purity feature depth. QSAN wins on pricing (40–50% below for comparable raw NVMe IOPS) and XEVO 3 mirrored firmware HA. For Australian customers with realistic five-year TCO sensitivity, the XF5 delivers the same architectural class without the tier-1 vendor markup.
One of the advantages of working with CRS — we can recommend the best combination of vendors for your specific needs.
NAKIVO
NAKIVO protects XF5 production workloads with VAAI / ODX-integrated agentless backup at NVMe speed.
Proxmox
Proxmox VE clusters use XF5 over FC or iSCSI for tier-1 VM hosting — open-source virtualisation at enterprise performance.
StoneFly
Replicate XF5 volumes to StoneFly air-gapped immutable DR for ransomware resilience.
StarWind
StarWind VTL on XF5 delivers tier-1 backup-target performance for large enterprise estates.
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SAN and vSAN solve the same problem — shared storage for your virtual machines — in very different ways. Here is how to tell which one fits your environment.
QSAN XF5 Series is available through Cloud Ready Solutions and our network of authorised partners across Australia, New Zealand, and the Pacific.
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