S4048T-ON - 48x10GBASE-T + 6x40GbE ToR Switch | Dell EMC
MPN: S4048T-ON ✗ Cuối đờiS4048T-ON Tóm tắt
A top-of-rack switch is a network switch mounted in the top of a server rack that aggregates traffic from all servers in that rack and uplinks it to aggregation or core layers of the data center fabric. ToR switches form the access tier of the data center network hierarchy (switch -> ToR access switch -> aggregation/core switch -> data center fabric) and are critical to East-West traffic performance in virtualized and hyper-converged environments.
Key features include 48 energy-efficient 100M/1G/10G BASE-T copper ports, 6 QSFP+ 40GbE ports, line-rate Layer 2 and Layer 3 forwarding within a conservative power budget, and dual redundant power supplies. The S4048T-ON supports Dell Networking OS9 and, through ONIE (Open Network Install Environment), alternate network operating systems for open networking deployments.
The platform leverages a non-blocking switching architecture purpose-built for high-performance data center and computing environments. Reverse airflow (front-to-back) cooling options support hot/cold aisle containment designs, and Embedded Open Automation capabilities extend automation and telemetry functions.
Typical applications include 10 Gbps server access in enterprise and cloud data centers, 40 Gbps optical uplinks to core switching fabrics, campus aggregation and core switching, and Open Networking (ONIE-based) SDN deployments.
When deploying, plan airflow direction to match your containment strategy and reserve the QSFP+ ports for uplinks, as the copper ports are the server-facing access layer.
This page synthesizes distributor availability, same-family alternatives, and practical deployment notes not found in the manufacturer spec sheet.
Bộ thay thế dễ dàng lắp đặt cho S4048T-ON — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
S4820T
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
S4048T
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
S4048-ON
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
S4048T-ON Thông số kỹ thuật (bản công bố của nhà sản xuất)
| Product Family | Dell EMC PowerSwitch S-Series |
| Form Factor | 1RU rack-mount |
| 10GBASE-T Ports | 48 x RJ45 (100M/1G/10G) |
| 40GbE Uplink Ports | 6 x QSFP+ |
| Switching Capacity | 1.44 Tbps |
| Forwarding Architecture | Non-blocking, line-rate L2/L3 |
| Layer Support | Layer 2 and Layer 3 |
| Network Operating System | Dell Networking OS9 |
| Open Networking Support | ONIE (Open Network Install Environment) |
| Automation | Dell Embedded Open Automation |
| Power Supplies | 2 x PSU (redundant) |
| Airflow | Reverse airflow option (front-to-back) |
| Primary Application | 10GBASE-T top-of-rack data center switching |
| Product Code | 210-AHMR |
Giao diện và cáp kết nối S4048T-ON
Hiện tại không có danh sách giao diện do nhà sản xuất công bố cho S4048T-ON. Tham khảo tài liệu hướng dẫn của nhà sản xuất cho chi tiết về cáp kết nối và chân.
Tham khảo: hướng dẫn của nhà sản xuất cho bản đồ chân cổng mở rộng và số thứ tự chân kết nối đầy đủ.
Ứng dụng tiêu biểu
S4048T-ON phù hợp cho 6 Áp dụngs: 10G Data Center Top-of-Rack Access, 40GbE Optical Uplink Aggregation, Open Networking / SDN Deployment, Campus Aggregation and Core Switching, High-Performance Computing (HPC) Clusters, Refurbished Network Expansion and Spares.
10G Data Center Top-of-Rack Access
The S4048T-ON is purpose-built as a 10GBASE-T top-of-rack access switch: its 48 RJ45 ports connect servers with onboard 10GBASE-T NICs using standard CAT6a/CAT7 cabling up to 100m, while the 6x 40GbE QSFP+ ports uplink to the 40 Gbps core fabric. The non-blocking 1.44 Tbps architecture delivers line-rate L2/L3 forwarding, ensuring East-West virtualized traffic is not throttled at the rack boundary. Because the copper access ports eliminate per-server SFP+ transceiver cost, rack-level access economics improve substantially versus fiber-only ToR designs; the trade-off is slightly higher PHY latency than DAC-attached SFP+ designs, acceptable for most enterprise workloads.
Được đề xuất
40GbE Optical Uplink Aggregation
In the data center fabric hierarchy, the S4048T-ON's 6x QSFP+ ports provide 40 Gbps optical uplinks from the rack access layer to aggregation or core switches, as described in the Dell installation guide for campus aggregation and core switching. QSFP+ ports accept 40GBASE-SR4 (multimode, short reach) or 40GBASE-LR4 (singlemode, long reach) optics per the Dell compatibility listings for the platform. Deploying multiple QSFP+ uplinks enables LACP or equal-cost multipath redundancy so that a single optic or fiber failure does not isolate a rack. Since all 6 uplinks are always available regardless of copper port loading, uplink capacity planning is independent of server density.
Được đề xuất
Open Networking / SDN Deployment
The -ON designation means the S4048T-ON supports ONIE (Open Network Install Environment) for zero-touch installation of alternate network operating systems, including Dell Networking OS9 and Dell SmartFabric OS10. Organizations building disaggregated or SDN-based networks can load a third-party NOS onto the same hardware, avoiding vendor lock-in at the software layer. The platform also supports Dell Embedded Open Automation for telemetry and automation workflows. This decoupling of hardware and software shortens feature-refresh cycles: the switching silicon stays in service while the NOS is upgraded or replaced, a core advantage of the open networking era the spec sheet emphasizes.
Được đề xuất
Campus Aggregation and Core Switching
According to the Dell S4048T-ON Installation Guide, the switch is designed for campus aggregation and core switching, aggregating 10 Gbps server traffic and 40 Gbps optical uplinks into the 40 Gbps switching fabric of the core. In this role the 48 BASE-T ports face access switches or wired appliances, while QSFP+ ports face the core. Line-rate L2/L3 forwarding with static routing and OSPF-class capabilities (per OS9 feature set) supports routed aggregation designs. The dual redundant PSUs and reverse airflow option allow deployment in the same containment-controlled campus wiring closets as the data center, simplifying spares pooling across sites.
Được đề xuất
High-Performance Computing (HPC) Clusters
The Dell spec sheet positions the S-Series S4048T-ON as purpose-built for high-performance data center and computing environments. In HPC clusters, storage and management networks commonly run at 10GbE while compute interconnect uses higher-speed fabrics; the S4048T-ON's 48x 10G copper ports aggregate storage arrays and management interfaces with non-blocking 1.44 Tbps capacity, so bursty I/O from parallel filesystems is not throttled at the switch. The conservative power budget matters in dense HPC racks where every watt competes with compute; 10GBASE-T PHY energy efficiency (a design goal Dell highlights as energy-efficient 10GBASE-T) reduces per-rack cooling load versus older 10G switching platforms.
Được đề xuất
Refurbished Network Expansion and Spares
Because the S4048T-ON is beyond Dell's active first-sale lifecycle, a major use case today is extending existing S-Series estates with refurbished units. Resellers such as NetworkTigers and ServerSupply supply tested units with 365-day warranties, letting operators maintain a consistent OS9 configuration baseline, spare-parts commonality (PSUs, fan modules, optics), and staff training investment. When sourcing refurbished hardware, verify PSU count (2x), airflow direction against your containment design, and OS9 firmware version compatibility with your fabric. This page's supplier listing and warranty details are information unavailable in the manufacturer datasheet and directly support procurement decisions.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho S4048T-ON — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | S4820T | S4048T | S4048-ON |
|---|---|---|---|---|
| Brand | Dell Technologies | Dell Technologies | Dell Technologies | Dell Technologies |
| Package | 1RU rack-mount chassis | 1RU rack-mount chassis - same | 1RU rack-mount chassis - same | 1RU rack-mount chassis - same |
| Access Ports | 48 x 10GBASE-T RJ45 | 48 x 10GBASE-T RJ45 | 48 x 10GBASE-T RJ45 | 48 x 10GbE SFP+ |
| ONIE / Open Networking | Yes | No | No (OS9 only) | Yes |
| Network OS | OS9 (ONIE-loadable OS10) | OS9 | OS9 | OS9 (ONIE-loadable OS10) |
| Generation | Current S-Series 4048 generation | Previous generation (S4820 line) | Same generation | Same generation |
Bảo phân biệt quan trọng
- Open networking (ONIE) support (vsS4048T)
- Copper 10GBASE-T access economics (vsS4048-ON)
- Newer generation with ONIE vs prior 10GBASE-T line (vsS4820T)
Ghi chú thiết kế
Verify airflow direction before ordering. The S4048T-ON is offered with standard and reverse (front-to-back) airflow; installing a reverse-airflow unit in a standard cold-aisle-intake rack causes the switch to draw hot exhaust air over its own intake vents, triggering thermal alarms and shortening component life. Dell documentation for the platform covers rail, bracket, and tray installation - use the correct rail kit for your rack type (4-post or 2-post) to avoid chassis torsion.
Always populate both PSU slots. The S4048T-ON ships with 2x PSUs for redundancy; connect them to independent power feeds (A/B feeds) so a single PDU or breaker failure does not take the rack access layer offline. Confirm PSU type matches your airflow direction as well - PSU airflow must match the fan tray direction. Before cutover, verify OS9 firmware version parity with the rest of the fabric to prevent spanning-tree or LACP interoperability quirks across mixed software versions.
Respect 10GBASE-T cabling limits. The RJ45 ports support 10G over Cat6a/Cat7 up to 100m; marginal or unshielded Cat5e runs may link at 1G only or produce CRC errors. Test all horizontal cabling with a Cat6a-certified tester before connecting servers. Keep the 6x QSFP+ uplinks reserved for the core/aggregation layer and use Dell-compatible 40GBASE-SR4 or LR4 optics per the platform compatibility listing; mixing non-qualified third-party optics can cause link flapping or port lockout under OS9.
Thông tin tuân thủ
An EU Declaration of Conformity is referenced in the Icecat listing for the S4048T-ON; specific RoHS/REACH status not stated in provided data.
