The Dell PowerSwitch S4128F-ON (210-ALSZ) is a high-performance 1U managed Layer 2/3 Ethernet switch designed for enterprise data center environments. It features 28 10GBASE-T SFP+ ports for high-density server connectivity and 2 QSFP28 ports for 100GbE uplink capability, delivering non-blocking switching fabric with full-duplex performance. The switch includes dual redundant power supplies, Dell OS10 operating system, and supports advanced networking features including VLAN, LAG, RSTP, and QoS. Ideal for top-of-rack (ToR) deployments in virtualized data centers, cloud infrastructure, and high-performance computing environments requiring low-latency east-west traffic and reliable redundancy.
Dual redundant power supplies for high availability.
Layer 2/3 managed switching with VLAN and QoS.
1U rack-mountable form factor for dense deployments.
Dell OS10 operating system with advanced features.
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Featuring
Manufacturer part #
210-ALSZ
Brand
Dell
Condition
Refurbished
Model Name
S4128F-ON
Product Line
PowerSwitch S-Series
Product Type
Managed Layer 2/3 Ethernet Switch
VLAN Support
802.1Q VLAN tagging, up to 4094 VLANs
Spanning Tree
RSTP (802.1w), MSTP (802.1s)
Certifications
FCC, CE, RoHS, WEEE
Link Aggregation
IEEE 802.3ad LAG, up to 32 LAG groups
Operating System
Dell OS10 (Linux-based)
Compatible systems
The Dell 210-ALSZ S4128F-ON is compatible with Dell PowerEdge and PowerVault systems, as well as third-party servers and storage from HPE, Lenovo, and others equipped with 10GBASE-T or SFP+ network interfaces. Runs Dell OS10 natively; requires QSFP28 transceiver modules for 100GbE uplinks and standard data center power/cooling infrastructure.
Dell Technologies PowerEdge
Model: R640, R650, R660, R750, R760
Form factor: 1U/2U Rack
Generation: 14G-16G
Compatible as top-of-rack switch for PowerEdge server deployments via 10GbE network adapters.
Dell Technologies PowerVault
Model: ME4024, ME5024, ME5084
Form factor: Rack-mount
Generation: Current
Supports iSCSI and FCoE storage connectivity for Dell storage arrays.
Hewlett Packard Enterprise ProLiant
Model: DL360, DL380, DL560, DL580
Form factor: 1U/2U Rack
Generation: Gen10/Gen11
Third-party compatibility via standard 10GBASE-T and QSFP28 interfaces.
Lenovo ThinkSystem
Model: SR630, SR650, SR660, SR750
Form factor: 1U/2U Rack
Generation: Current
Compatible with ThinkSystem servers equipped with 10GbE network adapters.
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Primary deployment as access layer switch connecting 28 servers or storage nodes at 10GbE speeds with redundant uplinks to core infrastructure.
Cloud Infrastructure
Multi-tenant cloud environments requiring high port density, VLAN isolation, and QoS capabilities for workload separation and traffic prioritization.
High-Performance Computing (HPC)
Compute cluster interconnect providing low-latency, high-throughput networking for parallel processing and distributed storage applications.
Virtualized Data Centers
VMware vSphere and Hyper-V deployments leveraging 10GbE for VM migration, storage traffic, and management network consolidation.
Storage Area Networks (SAN)
iSCSI and Fibre Channel over Ethernet (FCoE) environments requiring deterministic performance and advanced QoS for storage traffic.
Enterprise Campus Networks
Distribution layer switching for medium-to-large enterprise campuses consolidating multiple access switches with 100GbE uplink capacity.
Frequently asked questions
What is the switching capacity and port configuration of the Dell 210-ALSZ?
The S4128F-ON delivers 1.44Tbps full-duplex switching capacity with 28x10GBASE-T SFP+ ports and 2x QSFP28 ports supporting 100GbE uplinks. This non-blocking architecture enables wire-speed forwarding across all ports simultaneously, making it ideal for high-density top-of-rack deployments requiring low-latency east-west traffic between servers and storage.
What operating system and management capabilities does the S4128F-ON provide?
The switch runs Dell OS10, a modern Linux-based network operating system supporting Layer 2/3 switching, VLAN, LAG, RSTP, LLDP, and advanced QoS. Management options include CLI, SNMP, and REST API for integration with orchestration platforms. Dual PSU design ensures continuous operation during maintenance or power events.
Is the Dell 210-ALSZ suitable for virtualized data center environments?
Yes, the S4128F-ON is optimized for virtualized data centers running VMware vSphere or Microsoft Hyper-V. Its 10GbE port density supports high-speed VM migration, storage traffic consolidation, and management network integration. Advanced QoS and VLAN capabilities enable multi-tenant isolation and traffic prioritization for mixed workloads.
What uplink options are available for connecting to core infrastructure?
Two QSFP28 ports provide 100GbE uplink capacity, supporting both direct core connections and link aggregation (LAG) for redundancy. This enables 200Gbps aggregate uplink bandwidth, sufficient for supporting 28 servers at full 10GbE line rate with oversubscription ratios as low as 1:1 in non-blocking configurations.
What power consumption and thermal characteristics should be planned for?
The S4128F-ON with dual PSU typically consumes 200-370W depending on port utilization and configuration. Standard thermal output is approximately 2,800-3,100 BTU/hour, requiring standard data center cooling infrastructure. Dual PSU design supports N+1 redundancy, allowing one PSU to fail without service interruption.
How does the S4128F-ON compare to other Dell S-Series switches for data center deployments?
The S4128F-ON provides 28x10GbE ports with 2x100GbE uplinks, positioning it as a high-density access layer switch. Compared to smaller models, it offers greater port count for server connectivity; compared to larger models like the S4148F-ON, it provides a more cost-effective solution for medium-density environments while maintaining full Layer 2/3 feature parity.
What redundancy and high-availability features are built into this switch?
Dual redundant power supplies provide N+1 PSU redundancy. The switch supports RSTP for loop prevention, LAG for link aggregation across multiple ports, and VLAN for network segmentation. These features enable resilient network designs with automatic failover and load balancing across redundant paths.
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