HPE S2T75A 18x SFP28 25Gb 4x QSFP28 100Gb - Ethernet Switch

TThe HPE Storage Switch M-series SN2010M (S2T75A) is a specialized, half-width, 1U Top-of-Rack (ToR) Ethernet switch designed for high-performance storage fabrics and hyperconverged infrastructure (HCI). This model is distinguished by its ultra-low port-to-port latency (under 300 nanoseconds), making it critical for eliminating network bottlenecks in environments using All-Flash Arrays (AFAs) and NVMe over Fabric (NVMe-oF). The switch features a flexible port configuration: 18 SFP28 ports supporting 25 Gigabit Ethernet (GbE) speeds (and lower) for server connectivity, and 4 QSFP28 ports supporting 100 GbE for uplinks, with the capability to breakout into additional 25 GbE links. Included in the S2T75A SKU is the NVIDIA Cumulus Linux operating system, providing a robust, open platform for network automation and operations. Its support for RDMA over Converged Ethernet (RoCE) and guarantee of zero packet loss make it ideally suited for scale-out, high-availability data center deployments where storage and compute traffic must be non-blocking and highly efficient.
This device is an excellent choice for:

• High-Performance All-Flash Storage Fabrics (NVMe-oF):

  This deployment scenario represents the SN2010M's highest value application. Its architecture is fundamentally designed to achieve ultra-low port-to-port latency, typically less than 300 nanoseconds, which is essential for running NVMe over Fabric (NVMe-oF) protocols. By minimizing network hop delay, the switch ensures that the network layer does not introduce performance bottlenecks, allowing application servers to fully utilize the immense speed of modern All-Flash Arrays (AFAs). This is critical for transactional databases, financial trading, and real-time analytics where every microsecond matters, providing the infrastructure necessary to maximize the IOPS and throughput delivered by NVMe-based storage.

• Hyperconverged Infrastructure (HCI) Clusters:

  The SN2010M is ideally suited for supporting large-scale Hyperconverged Infrastructure environments, including solutions like VMware vSAN, Nutanix, or HPE SimpliVity. In these clusters, both server-to-server synchronization and storage traffic traverse the same physical network. The switch's high-density 25GbE connectivity to each compute node, combined with 100GbE uplinks to the core, guarantees non-blocking performance. This is vital for minimizing network congestion during demanding operations like virtual machine live migrations, data rebuilds, and storage replication, thereby maintaining consistent application performance and cluster integrity.

• RDMA over Converged Ethernet (RoCE) Deployment:

  The switch's hardware is highly optimized for running RoCE (Remote Direct Memory Access over Ethernet), a key technology for high-speed clustering and distributed storage. Its advanced features, including deep buffering and effective flow control mechanisms, ensure zero packet loss and stable RoCE transport. This stability allows RoCE-enabled applications (such as Microsoft Storage Spaces Direct or high-performance computing interconnects) to bypass the CPU for data transfer, resulting in significantly reduced latency and maximized I/O efficiency crucial for maintaining performance across a large storage pool.

• Top-of-Rack (ToR) in Scale-Out Data Centers:

  With its compact, power-efficient **half-width, 1U form factor, the SN2010M is perfectly positioned for dense Top-of-Rack deployments in large, scalable data centers. The mix of 18 x 25GbE downlink ports allows for a high density of server connectivity within a single rack, while the 4 x 100GbE QSFP28 uplink ports** provide massive aggregated bandwidth back to the spine layer. This architecture allows data center operators to build flexible, high-capacity, and scalable fabrics, enabling incremental scaling of compute and storage resources without requiring a full network infrastructure overhaul.

• Cloud and DevOps Automation Environments:

  The specific S2T75A model is bundled with the NVIDIA Cumulus Linux operating system, offering a unique advantage for modern IT environments. This OS transforms the switch into a Linux server, allowing it to be integrated seamlessly into existing DevOps tools and workflows (such as Ansible, Chef, or Puppet). Network provisioning, management, and troubleshooting can be streamlined through simple Linux command-line tools and scripting, promoting rapid deployment, configuration consistency, and advanced operational automation critical for private cloud infrastructure.