Mellanox SB7790, 36 × 100GbE QSFP28 Open Networking Switch, Redundant Power, Hot-Swappable Fans, 1RU (REF)

Mellanox SB7790 is a high-performance 100GbE open networking switch designed for data center and HPC environments. This 1U switch delivers 36 × 100GbE QSFP28 ports with flexible breakout options, delivering ultra-low latency and high throughput for demanding workloads. Redundant power supplies and hot-swappable fans ensure continuous operation and energy-efficient cooling.

Optimized for open networking, the SB7790 supports ONIE (Open Network Install Environment), allowing installation of Mellanox Onyx, SONiC, or Cumulus Linux. This combination of software flexibility and hardware reliability enables administrators to deploy automated, scalable, and programmable networks for enterprise and hyperscale deployments.

KEY FEATURES:

• Ports: 36 × 100GbE QSFP28 (breakout to 4 × 25GbE)
  
• Switching Capacity: 7.2 Tbps full duplex
  
• Throughput: 5.3 Bpps
  
• CPU: Multi-core x86 processor
  
• System Memory: 4 GB DDR3
  
• Flash Storage: 32 GB
  
• Packet Buffer: 64 MB
  
• MAC Address Table: 1M entries
  
• VLANs: Up to 4,094
  
• Form Factor: 1RU rack mount
  
• Airflow: Front-to-Back or Back-to-Front
  
• Fans: Hot-swappable N+1 redundant modules
  
• Power Supply: Dual redundant AC or DC PSUs
  
• Supported OS: Mellanox Onyx, SONiC, Cumulus Linux
  
• Condition: Refurbished

TECHNICAL SPECIFICATIONS:

HARDWARE:

PERFORMANCE:

SECURITY:

MANAGEMENT:

PHYSICAL & ENVIRONMENTAL:

ADVANCED FEATURES:

High-Performance Non-Blocking Switching:

The SB7790 delivers a full non-blocking switching capacity of 7.2 Tb/s across its 36 × QSFP28 EDR ports, ensuring maximum throughput and low latency for high-performance computing (HPC), AI/ML workloads, and large-scale data centers. Its ultra-low latency architecture reduces bottlenecks in east-west traffic, allowing applications such as real-time analytics, financial computing, and scientific simulations to perform optimally.

Flexible InfiniBand and Ethernet Connectivity:

With support for QSFP28 EDR ports, the SB7790 provides high-speed 100GbE or EDR InfiniBand connectivity. Each port can be configured for flexible breakout modes to accommodate diverse network requirements, allowing IT teams to scale bandwidth dynamically without replacing hardware. This adaptability ensures seamless integration into multi-vendor environments and hybrid infrastructures.

High Availability and Redundancy:

The switch is engineered for continuous operation with dual hot-swappable power supplies (2PS) and P2C airflow fan trays. Redundant components enable uninterrupted switching during maintenance, upgrades, or unexpected failures. Administrators can perform firmware updates or replace hardware modules without disrupting mission-critical workloads, ensuring maximum uptime in enterprise and HPC environments.

Scalable and Modular Architecture:

SB7790 supports scale-out topologies for large data centers, HPC clusters, and AI/ML deployments. Its non-blocking architecture allows multiple SB7790 switches to interconnect seamlessly, enabling high-bandwidth spine-leaf fabrics. The modular design allows expansion of compute and storage clusters without compromising performance or network efficiency.

Advanced Telemetry and Monitoring:

The switch supports comprehensive telemetry options, including SNMP, IPFIX, and Mellanox Onyx streaming telemetry, providing real-time visibility into traffic patterns, congestion points, and device health. This high-frequency monitoring enables predictive maintenance, proactive troubleshooting, and dynamic workload management, ensuring optimal network performance under varying loads.

Enhanced Quality of Service (QoS):

The SB7790 offers sophisticated QoS features to prioritize latency-sensitive traffic such as HPC simulations, storage, and financial transactions. With multiple queues per port, congestion management, traffic shaping, and flow control mechanisms, the switch ensures deterministic delivery of critical workloads even under full saturation conditions.

Security and Compliance Features:

Security is embedded at every layer, with support for hardware-assisted encryption, access control lists (ACLs), and role-based management. The switch includes protection against common threats such as IP spoofing, ARP attacks, and unauthorized access. Compliance with RoHS-6 and industry standards ensures both operational safety and environmental responsibility.

Energy-Efficient Design:

Optimized for power efficiency, the SB7790 reduces energy consumption during low-utilization periods using intelligent power management techniques. P2C airflow combined with hot-swappable fans ensures effective cooling while minimizing energy usage, helping organizations reduce operational costs and meet sustainability goals.

Seamless Integration with HPC: 

Designed for high-performance computing, AI/ML clusters, and storage fabrics, the SB7790 integrates seamlessly with Mellanox Onyx, SONiC, and other third-party network operating systems via ONIE. Its programmable architecture and high-speed interconnects enable rapid deployment, orchestration, and automation of large-scale computing environments.

ORDERING INFORMATION:

SUPPORT:

All refurbished products sold on Grabnpay are tested, verified, and delivered in good working condition. Our team provides assistance with installation, configuration, and troubleshooting to ensure smooth operations. Please note that for refurbished products, no manufacturer warranty, vendor support, or license coverage applies. For any issues, our technical support team will guide you with solutions and recommend suitable replacements or upgrades if required.