The HPE StoreFabric SN2100M (part number R0P82A) is a 1U half-width Ethernet switch designed for high-performance data center and storage network deployments. It features 16 QSFP28 ports supporting speeds from 1Gbps to 100Gbps, with a non-blocking switching capacity of 3.2TB/s and throughput of 2.38Bpps at full 100GbE line rate. The switch delivers ultra-low latency with true cut-through forwarding and zero packet loss performance, making it ideal for latency-sensitive workloads including NVMe TCP and RoCEv2 RDMA applications. All 16 QSFP28 ports support x4 or x2 breakout mode, enabling up to 64 breakout ports for maximum flexibility. With 16MB of fully-shared packet buffering, comprehensive Layer 2 and Layer 3 forwarding capabilities, and advanced features like DCBX, PFC, and ECN support, the SN2100M is optimized for modern server and storage networks. The unique half-width design allows two units to be deployed side-by-side in a single 1RU rack slot, delivering 6.4TB/s aggregate switching capacity and 4.76Bpps processing capacity for high-availability configurations. Power efficiency is a key advantage, with less than 6 watts per port consumption, reducing operational costs and heat generation compared to competing solutions.
3.2TB/s switching capacity with 2.38Bpps throughput.
Ultra-low latency cut-through forwarding with zero packet loss.
RoCEv2 RDMA support for high-performance computing applications.
All ports support x4 or x2 breakout for 64 maximum breakout ports.
Less than 6 watts per port for industry-leading power efficiency.
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Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.
Featuring
Manufacturer part #
R0P82A
Brand
HPE
Condition
New
Model Name
SN2100M
System LEDs
System status indicators (System, Fan, Power Supply, Unit Identifier)
Power Design
Designed for reduced OpEx with lower heat generation than competing switches
Product Line
StoreFabric
Product Type
Layer 3 Ethernet Switch
RDMA Support
RoCEv2 (RDMA over Converged Ethernet v2) for Layer 2 and Layer 3
The HPE SN2100M is compatible with Cumulus Linux and ONIE-based network operating systems. It requires QSFP28 100GbE transceivers and cables for port connectivity. Management is via 100Mbps-1Gbps Ethernet (MGMT0) or RS232 serial console. The switch supports breakout mode for 40GbE and lower speeds, enabling integration with legacy infrastructure. Two units can be deployed side-by-side in a single 1RU rack slot for redundancy and increased capacity.
HPE StoreFabric
Model: SN2100M
Form factor: 1U Half-Width Rackmount (19-inch)
Generation: M-Series
Can be deployed as single unit or two units side-by-side in single 1RU slot for high-availability configurations.
Best for
Data Center Spine/Core Switching
High-capacity aggregation layer for large-scale data center networks requiring non-blocking 100GbE connectivity and ultra-low latency for east-west traffic.
High-Performance Computing (HPC) Clusters
Interconnect fabric for HPC environments demanding low-latency RDMA over Converged Ethernet (RoCEv2) and high throughput for compute node communication.
Storage Area Networks (SAN)
Fibre Channel and Ethernet-based storage networks requiring predictable performance, zero packet loss, and support for storage protocols at line rate.
Cloud Infrastructure
Backbone switching for cloud data centers supporting multi-tenant environments with advanced Layer 3 routing, VRF, and ECMP for traffic engineering.
Details
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New, certified-refreshed and OEM stock with guaranteed compatibility, backed by warranty on every part.
IPv4/v6 routing with OSPFv2, OSPFv3, BGPv4/v6; RoCEv2 support (Layer 2 and Layer 3); VRF with route leaking; ECMP with resilient hashing; BFD across all platforms; Policy-based routing; GRE tunneling; PTP Boundary Clock; VNI scaling (6 bridges, 1,000 VNIs); GTP hashing; Adaptive Routing with RoCEv2
Operating System
Cumulus Linux with ONIE (Open Network Install Environment) support
Access Control Lists (ACLs) L2-L4 classification via IP/EP tables; CPU protection via hardware-enforced ACL-based rate limiting; DoS control; 802.1x authentication and authorization; Kernel Address Space Randomization
Inventory Information
Pull-out tab for asset tracking
Deployment Flexibility
Single unit or two units side-by-side in single 1RU rack slot for high-availability configurations
Compatible Transceivers
HPE Aruba Networking 100G QSFP28 modules and Active Optical Cables (AOCs); 40G QSFP+ MPO SR4 for legacy deployments
Quality of Service (QoS)
DCBX, PFC (Priority Flow Control), ECN (Explicit Congestion Notification) support
Monitoring and Troubleshooting
Comprehensive monitoring, logging, and troubleshooting capabilities via Cumulus Linux
Storage
Flash Memory
64MB
Network & Communication
Packet Buffering
16MB fully-shared packet buffer
Port Breakout Support
All 16 QSFP28 ports support x4 or x2 breakout mode (maximum 64 breakout ports)
Forwarding Architecture
Non-blocking, true cut-through with ultra-low latency
Packet Loss Performance
Zero packet loss at line rate across all port speeds and packet sizes
Throughput (Single Unit)
2.38Bpps (billion packets per second) at 16x100GbE
Switching Capacity (Single Unit)
3.2TB/s (full-duplex)
Throughput (Dual Unit Side-by-Side)
4.76Bpps at 16x100GbE per unit
Switching Capacity (Dual Unit Side-by-Side)
6.4TB/s (full-duplex)
Power Consumption
Power Consumption
Less than 6 watts per port (industry-leading efficiency)
Physical Characteristics
Rack Units
1RU (half-width; two units fit side-by-side in single 1RU slot)
Form Factor
1U Half-Width Rackmount (19-inch)
Interface/Ports
Console Port
RS232 serial console (115200 BAUD)
USB Interface
USB 2.0 Mini connector for password reset and recovery
Management Port
MGMT0 100Mbps to 1Gbps Ethernet port
Port Configuration
16x QSFP28 ports (1-16 support 40/100GbE)
Port Speeds Supported
1Gbps, 10Gbps, 25Gbps, 40Gbps, 50Gbps, 100Gbps
Machine Learning / AI Training
Interconnect for distributed AI/ML clusters requiring ultra-low latency, high bandwidth, and RoCEv2 support for efficient gradient synchronization.
Financial Services Networks
Low-latency trading and transaction processing networks where microsecond-level latency and deterministic performance are critical.
Frequently asked questions
What is the switching capacity and throughput of the HPE SN2100M?
The SN2100M delivers 3.2TB/s switching capacity with 2.38Bpps processing capacity when running all 16 ports at 100GbE. When two units are deployed side-by-side in a single 1RU rack slot, aggregate capacity reaches 6.4TB/s and 4.76Bpps. This non-blocking architecture ensures wire-speed forwarding across all ports simultaneously without head-of-line blocking.
Does the SN2100M support RDMA and what are the latency characteristics?
Yes, the SN2100M fully supports RoCEv2 (RDMA over Converged Ethernet v2) for both Layer 2 and Layer 3 deployments. It features true cut-through forwarding architecture delivering ultra-low latency with zero packet loss at line rate across all port speeds and packet sizes, making it ideal for latency-sensitive HPC and AI/ML workloads.
What port speed flexibility does the SN2100M offer?
The switch supports Ethernet port speeds from 1Gbps to 100Gbps. All 16 QSFP28 ports can operate at 40GbE or 100GbE, and all ports support x4 or x2 breakout mode, enabling up to 64 breakout ports maximum. This flexibility allows deployment in diverse network environments from legacy 1GbE to cutting-edge 100GbE infrastructure.
What Layer 3 routing and advanced networking features are included?
The SN2100M includes comprehensive Layer 3 capabilities: IPv4/v6 routing with OSPFv2/v3 and BGPv4/v6, Virtual Routing and Forwarding (VRF), Equal-Cost Multi-Path (ECMP) with resilient hashing, Bidirectional Forwarding Detection (BFD), Policy-Based Routing, GRE tunneling, and Precision Time Protocol (PTP) Boundary Clock support. It supports up to 6 bridges with 1,000 VNIs for scalable multi-tenant deployments.
How does the half-width form factor benefit data center deployments?
The unique half-width 1U design allows two SN2100M switches to be placed side-by-side in a single 1RU rack slot, delivering 6.4TB/s aggregate switching capacity and 4.76Bpps in minimal rack space. This enables high-availability configurations and maximizes port density per rack unit, reducing overall data center footprint and operational costs.
What security and access control features does the SN2100M provide?
Security features include Layer 2-4 Access Control Lists (ACLs) with IP/EP table classification, 802.1x authentication and authorization, Kernel Address Space Randomization, hardware-enforced ACL-based rate limiting, and DoS control. The switch supports bridge management with STP, RSTP, PVRST, PVST, bridge assurance, BPDU guard, and BPDU filter for comprehensive network security.
What is the power consumption and environmental efficiency of the SN2100M?
The SN2100M is designed for power efficiency with less than 6 watts per port consumption, providing one of the industry's lowest power draws. This results in reduced heat generation compared to competing switches, lowering cooling requirements and operational expenses while maintaining high performance and reliability in data center environments.
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