• Lenovo ThinkSystem DB620S 1U Gen 6 Fibre Channel SAN Switch – Scalable 24–64-Port SFP+ & Q-Flex with 2 Tbps Fabric

    Keywords

    pay-as-you-grow scalability, DB620S, 64 ports, SFP+, Q-Flex ports, Gen 6 Fibre Channel, 566 Mfps, 100 M IOPS, 900 ns latency, ISL trunking, Dynamic Path Selection, Fabric Vision

    Description

    The Lenovo ThinkSystem DB620S delivers industry-leading pay-as-you-grow scalability in a compact 1U chassis, allowing organizations to grow from 24 to 64 active ports with 48 SFP+ and four Q-Flex ports. A simple point-and-click UI and streamlined deployment process make the DB620S exceptionally easy to manage.

    Powered by Gen 6 Fibre Channel ASIC technology, the DB620S supports up to 566 million frames per second and up to 100 million IOPS, while maintaining port-to-port latency of just 900 ns via cut-through switching at 32 Gbps. With four Q-Flex ports trunking up to 128 Gbps each, aggregate fabric throughput reaches 2 Tbps.

    Advanced features such as frame-based ISL trunking (up to eight 32 Gbps links or two 128 Gbps QSFPs) and Dynamic Path Selection ensure optimal bandwidth utilization and load balancing. Built-in Fabric Vision® analytics provide deep visibility via I/O Insight and VM Insight for rapid root-cause analysis.

    Key Features

    • Pay-as-you-grow scalability: 24→64 ports with incremental PoD licenses
    • 48 SFP+ ports auto-sense 4/8/10/16/32 Gbps; four Q-Flex ports support up to 4×32 Gbps or 128 Gbps per port
    • Gen 6 Fibre Channel ASIC: 566 Mfps throughput, 100 M IOPS, ≤900 ns latency
    • Frame-based ISL trunking: up to eight 32 Gbps or two 128 Gbps links per trunk
    • Dynamic Path Selection (DPS) for fabric-wide load balancing
    • Fabric Vision® with I/O Insight & VM Insight for non-intrusive performance monitoring
    • 1 U rack-mount, hot-swap PSUs & fans, rear-to-front airflow

    Configuration

    SpecificationDetails
    ModelDB620S
    Chassis1 U rack-mount, rear-to-front airflow
    Active Ports24–64 (48 SFP+ + 4 Q-Flex)
    Port Speeds4/8/10/16/32 Gbps auto-sensing; 128 Gbps Q-Flex
    Performance566 Mfps; 100 M IOPS; ≤900 ns latency
    ISL Trunking8×32 Gbps or 2×128 Gbps; DPS load balancing
    Aggregate Bandwidth2 Tbps
    SoftwareFabric Vision®, Enterprise Bundle options
    Power & CoolingDual hot-swap PSUs; 3 hot-swap fans
    Warranty1 year hardware & firmware (upgrades available)

    Compatibility

    Certified with leading storage platforms including Dell EMC PowerStore, NetApp AFF/ONTAP, HPE 3PAR, and IBM FlashSystem. Integrates with VMware vSphere, Microsoft Hyper-V, and OpenStack. Supports major SAN management suites and automation via REST APIs.

    Usage Scenarios

    In growing flash-based SANs, the DB620S provides non-stop expansion from 24 to 64 ports without chassis swaps, enabling seamless “pay-as-you-grow” deployments for virtualization and VDI workloads.

    For remote or edge sites, its 1 U form factor and Fabric Vision® analytics deliver enterprise-class performance and visibility in space- or power-constrained environments.

    High-availability fabrics benefit from ISL trunking and DPS, ensuring maximum throughput and automatic failover for mission-critical backup and replication workflows.

    Frequently Asked Questions

    • Q1: How do PoD licenses enable “pay-as-you-grow” on the DB620S?
      A: You start with 24 active ports and add 12-port SFP+ or 4-port Q-Flex licenses in increments up to 64 total, avoiding hardware refreshes.
    • Q2: What is the benefit of Dynamic Path Selection (DPS)?
      A: DPS automatically balances traffic across multiple ISLs, improving bandwidth utilization and reducing congestion without manual intervention.
    • Q3: Can I mix 16 Gbps and 32 Gbps in the SFP+ ports?
      A: Yes. The 48 SFP+ ports auto-sense 4/8/10/16/32 Gbps speeds, supporting mixed-speed environments.
    • Q4: How does Fabric Vision® help reduce downtime?
      A: By providing non-intrusive I/O and VM Insight monitoring, Fabric Vision® detects anomalies early and generates alerts for proactive remediation.
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