QSAN Flash Storage
XF4 Series

Scalable NVMe Block Storage for Expanding Businesses

XF4 is purpose-built for growing enterprises seeking high-performance block storage with expansion flexibility. Leveraging the power of XEVO, it delivers scalable NVMe performance ideal for virtualization, media production, and high-speed IT infrastructure. With a modular architecture, mirrored firmware, and active-active controllers, XF4 achieves 99.9999%+ availability while enabling seamless capacity growth.

Scalable Block Storage for Growing Businesses

XF4 delivers enterprise-class storage scalability, making it the ideal solution for medium to large enterprises undergoing expansion

Powered by XEVO Fully Unleash Flash Performance

Integrated with XEVO QSAN originated block storage management, XF4 maximizes NVMe flash capabilities, ideal for AI inference, HPC, and data-intensive workloads.

Industry-leading 99.9999%+ Availability

With the mirrored firmware architecture and a fully modular redundant architecture, XF4 ensure nonstop service availability around the clock.

System Specification

Model Name	XF4226D-8C	XF4226S-8C
Architecture	Dual-active controller	Single-upgradable controller
CPU
Processor	Intel® Xeon® 8-core x 2	Intel® Xeon® 8-core
Memory
Memory Module Pre-installed	32 GB DDR4 DIMM	16 GB DDR4 DIMM
Total Memory Slots	16	8
Memory Expandable up to	2,048 GB	1,024 GB
Storage
Drive Bays	2.5″ Slot x 26
Maximum Drive Bays with Expansion Unit	650
Compatible Drive Type	2.5″ dual-port U.2 NVMe SSD (for internal & JBOF) 2.5″ SAS SSD (for SAS JBOD) 3.5″ SAS HDD (for SAS JBOD)	2.5″ single-port U.2 NVMe SSD (for internal & JBOF) 2.5″ SAS SSD (for SAS JBOD) 3.5″ SAS HDD (for SAS JBOD)
Drive Interface	U.2 NVMe (PCIe Gen 4) SAS 12 Gb/s (for SAS JBOD)
Maximum Internal Raw Capacity	1,597 TB
Maximum Raw Capacity with Expansion	23,961 TB
Hot Swappable Drive	Yes
Connectivity Port
PCIe Expansion	(Gen 4×8 Slot) x 4	(Gen 4×8 Slot) x 2
2.5 GbE RJ45 LAN Port	2 (onboard management port)	1 (onboard management port)
10 GbE SFP+ LAN Port	8 (onboard) / 2 (option) / 4 (option)	4 (onboard) / 2 (option) / 4 (option)
10 GbE RJ45 LAN Port	2 (option) / 4 (option)
25 GbE SFP28 LAN Port	2 (option) / 4 (option)
100 GbE QSFP LAN Port	2 (option)
16 Gb SFP+ Fibre Channel	2 (option) / 4 (option)
32 Gb SFP28 Fibre Channel	2 (option) / 4 (option)
Expansion and External Port
12 Gb/s SAS Wide Port to SAS JBOD	4 (onboard)	2 (onboard)
10 / 25 / 100 GbE LAN Port to JBOF	Up to 4 JBOF
USB Port	1 (front) / 2 (rear)	1 (front) / 1 (rear)
Others	Console Port x 2, Service Port x 2	Console Port x 1, Service Port x 1
Software Specification
Storage OS	XEVO 3
RAID Type	0 / 1 / 5 / 6 / 10 / 50 / 60 / 5EE / 6EE / 50EE / 60EE
Storage Efficiency	Thin provisioning / Compression and Deduplication (option)
Software Acceleration	SSD Cache / Auto tiering / RDMA
Data Protection	Snapshot / Asynchronous / Synchronous (option)
Security	SSL / SSH / iSCSI CHAP / ISE & SED
Support Protocols	iSCSI / FCP / NVMe-oF
Management	Web UI / RESTful API / S.E.S. / LCM
Appearance
Dimension (H x W x D) (mm)	88 x 438 x 573
Net Weight (kg)	19.6	16.5
Gross Weight (kg)	28.6	25.5
Others
Memory Protection	Cache-to-Flash Module (built-in)
System Fan	8 pcs	4 pcs
Power Supply Unit	850 W x 2 (80 Plus Platinum)
Power Input	100 – 240 VAC, 50/60 Hz
Power Consumption	812 W / 2,770 BTU
Certification	CE / FCC / BSMI
Standard Warranty	System: 5 years Cache-to-Flash Module: 1 year