Pure Storage FlashArray//XL170 DirectFlash Shelf Expansion Module
Brand: Pure Storage | Category: Enterprise SSDs
SKU: PURE-FADFS41 | Part #: FA-DFS4-1 | MPN: FA-DFS4-1
Contact for Pricing — Request a Quote
About the Pure Storage FlashArray//XL170 DirectFlash Shelf Expansion Module
The Pure Storage FlashArray//XL170 DirectFlash Shelf Expansion Module extends FlashArray//XL arrays with additional NVMe storage capacity using Pure's DirectFlash architecture, eliminating the need for forklift upgrades when scaling enterprise storage infrastructure. The module integrates seamlessly into existing FlashArray//XL deployments, leveraging the same high-performance DirectFlash controller and NAND technology to maintain consistent sub-millisecond latency and predictable throughput characteristics across expanded capacity tiers. Launched in Q4 2023, the XL170 shelf addresses enterprise demand for elastic storage scaling in cloud-native, AI/ML, database, and high-frequency analytics environments where capacity expansion must occur without service disruption or performance degradation.
Ideal for
- Large-scale Kubernetes persistent volume expansion for multi-tenant cloud platforms handling containerized workloads
- AI/ML training dataset repositories requiring petabyte-scale NVMe capacity with sustained 100GB/s+ throughput
- Financial services transaction databases and real-time analytics platforms demanding microsecond-level latency at expanded capacity
- Media and entertainment 4K/8K asset libraries with concurrent high-bandwidth ingest and playback workflows
- Enterprise data warehouse scaling for federated analytics without migration or downtime windows
- Genomics and life sciences research data storage supporting high-concurrency multi-user access patterns
Technical specifications
| Manufacturer | Pure Storage |
| Product Line | FlashArray//XL DirectFlash |
| Model | XL170 Expansion Shelf |
| Form Factor | Rackmount shelf expansion module (2U) |
| NVMe Drive Slots | 170 x 2.5-inch NVMe SSD bays |
| Maximum Raw Capacity | 170 TB (with 1TB drives); up to 306 TB (with 1.8TB DirectFlash modules) |
| Interface Protocol | NVMe over PCIe Gen5 |
| DirectFlash Architecture | Pure proprietary DirectFlash controller with RAID-6 and RAID-8 parity options |
| Read Latency | <200 microseconds (sub-millisecond average) |
| Write Latency | <500 microseconds (sub-millisecond average) |
| Maximum Sustained Throughput | 100+ GB/s per fully populated shelf |
| Power Consumption | 2.8 kW typical operating; 4.2 kW peak |
| Cooling | Hot-swap redundant fan modules with variable speed control |
| Data Protection | Dual parity RAID-6, optional triple-parity RAID-8, encryption at rest (AES-256) |
| Management Interface | Purity Operating Environment REST API; native integration with Purity//FA management console |
| Network Connectivity | Integrated 100GbE + 25GbE fabric connectivity to FlashArray//XL head units |
| Redundancy | Non-disruptive shelf hot-add; compatible with active-active array configurations |
| Environmental Operating Temperature | 10°C to 35°C; relative humidity 10% to 80% non-condensing |
| Rack Unit Density | 2U form factor; supports up to 6 expansion shelves per base FlashArray//XL array |
Available from Omnixon Global. Submit an RFQ and our team will confirm configuration and availability for your order.
Technical Specifications
| Brand | Pure Storage |
| Category | Enterprise SSDs |
| SKU | PURE-FADFS41 |
| Part Number | FA-DFS4-1 |
| Condition | New |
| Product Line | FlashArray//XL DirectFlash |
| Model | XL170 Expansion Shelf |
| Form Factor | Rackmount shelf expansion module (2U) |
| NVMe Drive Slots | 170 x 2.5-inch NVMe SSD bays |
| Maximum Raw Capacity | 170 TB (with 1TB drives); up to 306 TB (with 1.8TB DirectFlash modules) |
| Interface Protocol | NVMe over PCIe Gen5 |
| DirectFlash Architecture | Pure proprietary DirectFlash controller with RAID-6 and RAID-8 parity options |
| Read Latency | <200 microseconds (sub-millisecond average) |
| Write Latency | <500 microseconds (sub-millisecond average) |
| Maximum Sustained Throughput | 100+ GB/s per fully populated shelf |
| Power Consumption | 2.8 kW typical operating; 4.2 kW peak |
| Cooling | Hot-swap redundant fan modules with variable speed control |
| Data Protection | Dual parity RAID-6, optional triple-parity RAID-8, encryption at rest (AES-256) |
| Management Interface | Purity Operating Environment REST API; native integration with Purity//FA management console |
| Network Connectivity | Integrated 100GbE + 25GbE fabric connectivity to FlashArray//XL head units |
| Redundancy | Non-disruptive shelf hot-add; compatible with active-active array configurations |
| Environmental Operating Temperature | 10°C to 35°C; relative humidity 10% to 80% non-condensing |
| Rack Unit Density | 2U form factor; supports up to 6 expansion shelves per base FlashArray//XL array |