The HPE P17526-001 SN2745M is a high-performance M-series data center Ethernet switch designed for modern storage, database, and hyperconverged infrastructure deployments. It provides 32 ports of 100GbE QSFP28 connectivity with a non-blocking switching capacity of 6.4Tbps, enabling wire-speed forwarding across all ports simultaneously. The switch supports flexible Ethernet speeds from 10Gbps to 100Gbps per port, accommodating diverse workload requirements. Built on NVIDIA Spectrum-2 ASIC architecture, the SN2745M delivers ultra-low true cut-through latency with zero packet loss performance, making it ideal for latency-sensitive applications including NVMe TCP and RoCEv2 RDMA. Advanced features include 64MB fully-shared packet buffering, 512K forwarding entries, deep packet inspection, and comprehensive Layer 2/3 forwarding capabilities. The switch is optimized for Ethernet Storage Fabric (ESF) deployments and supports policy-based routing, GRE tunneling, PTP boundary clock functionality, and adaptive routing with RoCEv2. Power-efficient design reduces operational costs while maintaining enterprise-grade reliability and performance.
6.4Tbps non-blocking switching capacity across 32 100GbE ports.
Supports 10/25/40/50/100Gbps flexible Ethernet speeds per port.
Zero packet loss with ultra-low true cut-through latency performance.
RoCEv2 RDMA and NVMe TCP support for storage and HPC workloads.
64MB fully-shared packet buffering with 512K forwarding entries.
NVIDIA Spectrum-2 ASIC with 8.4Bpps processing capacity.
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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.
Policy-based routing, GRE tunneling, PTP boundary clock, VNI scaling (6 bridges with up to 1,000 VNIs), GTP hashing, adaptive routing with RoCEv2
Compatible systems
The HPE SN2745M is fully compatible with HPE M-series switch ecosystem and ProLiant servers equipped with 100GbE QSFP28 adapters. It runs NVIDIA Cumulus Linux natively and supports ONIE for flexible OS provisioning. Requires QSFP28 optical transceivers or DAC cables; optional breakout cables enable flexible port configurations. Management via standard Ethernet; monitoring via SNMP, Syslog, and advanced WJH telemetry.
HPE M-series Storage Switches
Model: SN2010M, SN2745M, SN3700M, SN4700M
Form factor: 1U rack-mount
Generation: NVIDIA Spectrum-based
SN2745M integrates with HPE M-series ecosystem; supports direct connections to other Spectrum switches via QSFP28/QSFP56 interfaces
HPE ProLiant Servers
Model: DL360, DL380, DL560, DL580 (Gen10/Gen11)
Form factor: 2U/4U rack-mount
Generation: Gen10 and later
Compatible with HPE ProLiant servers via 100GbE network adapters; supports iLO management integration
HPE Synergy Composable Infrastructure
Model: Synergy 12000 Frame
Form factor: Modular
Generation: Current generation
Can serve as core/spine switch for Synergy deployments requiring high-speed interconnect
Best for
Data Center Spine/Core Switching
Serves as high-capacity spine switch in multi-tier data center architectures, aggregating traffic from multiple leaf switches with 6.4Tbps non-blocking throughput and wire-speed performance across all 32 ports simultaneously.
Details
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Data center spine switching, Ethernet Storage Fabric (ESF), HPC cluster interconnect, hyperconverged infrastructure, cloud data center networks, database and analytics clusters
DC power-to-connector (Power to Connector designation)
Physical Characteristics
Weight
5.00 lbs (approximately 2.27 kg)
Dimensions
1U height, standard 19-inch rack width
Form Factor
1U rack-mount
Environmental
Airflow
Airflow-optimized design (Airflow designation in SKU)
Interface/Ports
Port Type
QSFP28 (100GbE)
Port Count
32 ports
Supported Speeds
10Gbps, 25Gbps, 40Gbps, 50Gbps, 100Gbps per port
Breakout Cable Support
QSFP28 to 4x25GbE or 4x10GbE breakout DAC/AOC cables; supports up to 128 1/10/25GbE ports via breakout
Optical Transceiver Support
QSFP28 100GBASE-SR4, 100GBASE-LR4, 100GBASE-CWDM4, and compatible third-party optics
Direct Attach Cable (DAC) Support
Passive and active QSFP28 DAC cables for short-reach connections
Ethernet Storage Fabric (ESF)
Optimized for storage-centric deployments with RoCEv2 RDMA support, zero packet loss guarantees, and ultra-low latency enabling efficient NVMe over Fabrics and distributed storage cluster communications.
High-Performance Computing (HPC) Clusters
Supports demanding HPC workloads requiring predictable low-latency interconnects, with 100Gbps per-port speeds and RDMA capabilities for tightly-coupled parallel computing applications.
Hyperconverged Infrastructure (HCI)
Provides unified high-speed networking for converged compute, storage, and virtualization platforms with support for multiple traffic classes and quality-of-service policies.
Cloud Data Center Networks
Delivers scalable, non-blocking switching capacity for large-scale cloud provider deployments requiring consistent performance, low latency, and support for east-west traffic patterns.
Database and Analytics Clusters
Enables high-throughput data movement between database nodes and analytics engines with zero packet loss and adaptive routing optimized for bursty, latency-sensitive workloads.
Frequently asked questions
What is the switching capacity and port configuration of the HPE SN2745M?
The SN2745M delivers 6.4Tbps non-blocking switching capacity with 32 ports of 100GbE QSFP28 connectivity. Each port supports flexible speeds from 10Gbps to 100Gbps, enabling wire-speed forwarding across all ports simultaneously without head-of-line blocking. This architecture ensures predictable performance for demanding data center and storage fabric deployments.
Does the SN2745M support RDMA and storage fabric protocols?
Yes, the SN2745M is optimized for Ethernet Storage Fabric (ESF) with full RoCEv2 RDMA support, NVMe TCP capability, and zero packet loss performance. It includes DCBX, PFC, and ECN support for priority-based traffic management, making it ideal for latency-sensitive storage and HPC applications requiring reliable RDMA operations.
What are the latency characteristics and packet buffering specifications?
The SN2745M provides ultra-low true cut-through latency with 64MB of fully-shared packet buffering. It delivers consistent, predictable latency across all packet sizes while maintaining zero packet loss at line-rate, critical for time-sensitive applications like financial trading, real-time analytics, and tightly-coupled HPC clusters.
What Layer 2 and Layer 3 features does the SN2745M provide?
The switch supports comprehensive Layer 2 features including STP, RSTP, PVRST, PVST, VLAN trunking (802.1q), LACP, and storm control. Layer 3 capabilities include policy-based routing, GRE tunneling, PTP boundary clock, VNI scaling (6 bridges with up to 1,000 VNIs), and adaptive routing with RoCEv2 for flexible network architectures.
What is the physical form factor and power efficiency of this switch?
The SN2745M is a 1U rack-mount switch with a compact form factor suitable for high-density data center deployments. It is designed with power efficiency in mind, delivering one of the industry's lowest power draws compared to competing switches, reducing operational expenses while maintaining enterprise-grade performance and reliability.
How does the SN2745M compare to other HPE M-series switches?
The SN2745M is positioned as a high-capacity 100GbE spine switch, offering 6.4Tbps throughput. It differs from the SN2010M (which provides 1.7Tbps with mixed 10/25GbE and 40/100GbE ports) and the SN4700M (which delivers 25.6Tbps with 32 400GbE ports). The SN2745M balances port density, speed, and cost for mid-to-large scale data center deployments.
What telemetry and monitoring capabilities are available?
The SN2745M includes advanced granular telemetry with What-Just-Happened (WJH) technology and 512K on-chip flow counters for deep visibility into network behavior. Deep packet inspection capabilities enable detailed traffic analysis, supporting proactive network monitoring, troubleshooting, and optimization in complex data center environments.
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