Pure Storage FlashArray //X20 R4
The Pure Storage FlashArray //X20 R4 is a modern 3U all-NVMe flash array powered by Intel Xeon Scalable processors and PCIe Gen 4 architecture. Operating on Purity//FA, it delivers up to a 40% performance improvement over prior generations, sub-millisecond response times, and native NVMe/TCP host connectivity.
Specifications
| Brand | Pure Storage |
|---|---|
| Family | FlashArray //X |
| Form factor | 3U rack |
| Released | Jun 2023 |
| Controller configuration | Dual active-active controllers in 3U enclosure |
| Processor | Intel Xeon Scalable multi-core processors per controller (PCIe Gen 4) |
| Operating system | Pure Storage Purity//FA |
| Raw capacity | Up to 345TB raw |
| Effective capacity | Up to 1.1PB effective with 3.3:1 data reduction |
| Drive media | NVMe DirectFlash Modules (DFMs: 4.5TB, 9.1TB, 18.2TB, 36.4TB) |
| Connectivity | 10GbE/25GbE/100GbE iSCSI, NVMe/TCP, NVMe/RoCE, and 16Gb/32Gb/64Gb FC |
| Data reduction | Always-on inline deduplication and compression |
| Management | Pure1 AI-powered management |
Generations
- Previous generation: Pure Storage FlashArray //X20
Check compatibility with Pure Storage
Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that Pure Storage has tested with the Pure Storage FlashArray //X20 R4.
- Compatibility Pure Storage compatibility matrix (free vendor sign-in)
- Support Pure Storage Support
Equivalent models from other brands
FAQ
What performance uplift does the //X20 R4 provide?
The R4 generation delivers up to 40% higher performance and PCIe Gen 4 speed compared to R3 models.
What front-end NVMe protocols are supported on the //X20 R4?
The //X20 R4 supports NVMe over TCP, NVMe over RoCEv2, and NVMe over Fibre Channel.
Buying or selling FlashArray //X20 R4?
New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.
Sources
- Pure Storage FlashArray //X Specifications, checked 2026-10-28
- Pure Storage Documentation - //X R4 Generation, checked 2026-10-28