Lenovo ThinkSystem NE1072T RackSwitch

Name: Lenovo ThinkSystem NE1072T RackSwitch
Brand: Lenovo

CurrentNetwork1U rack

The Lenovo ThinkSystem NE1072T RackSwitch is a high-density 1U 10GBASE-T data center switch designed for large-scale enterprise server clusters and IP storage pools. Featuring 48 copper 10GBASE-T ports and 6 40GbE QSFP+ or 100GbE QSFP28 uplinks running Lenovo CNOS, it delivers wire-speed Layer 2/3 performance with cut-through switching.

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Specifications

Brand	Lenovo
Family	ThinkSystem NE
Form factor	1U rack
Released	Jul 2017
Port configuration	48x 10GBASE-T RJ-45 ports and 6x 40/100GbE QSFP28 uplink ports
Switching capacity	2.16 Tbps switching capacity with 1.6 Bpps forwarding rate
Operating system	Lenovo Cloud Network Operating System (CNOS)
Features	Virtual Link Aggregation (VLAG), VXLAN gateway, cut-through architecture, telemetry streaming
Airflow	Rear-to-front or front-to-rear airflow options
Power supply	Dual redundant hot-swap AC power supplies
Management	RESTful API, CLI, Ansible, OpenStack, Telemetry

Compatible parts

Transceivers

46C3447 Lenovo ThinkSystem 10Gb SFP+ SR Optical Transceiver

Works together

How the Lenovo ThinkSystem NE1072T RackSwitch connects to servers, storage and the network: 3 ways, with the parts and products on each path.

iSCSI and NVMe/TCP over Ethernet File storage (NFS and SMB)Hyperconverged cluster

iSCSI and NVMe/TCP over Ethernet

Server10/25/100GbE NICEthernet switchstorage VLAN, two switchesStorage arrayiSCSI or NVMe/TCP ports

Keep the speed the same at all three points: a 25GbE server, a 25GbE switch port and a 25GbE array port. Mixed speeds work but the slowest link sets the pace.

Servers

Adapters for the server

4XC7A08238 ThinkSystem Broadcom 57414 10/25GbE SFP28 2-Port PCIe Ethernet Adapter
4XC7A08248 Lenovo ThinkSystem Mellanox ConnectX-6 Dx 100GbE QSFP56 2-Port PCIe Ethernet Adapter
4XC7A08295 ThinkSystem Intel E810-DA2 10/25GbE SFP28 2-Port PCIe Ethernet Adapter
7XC7A05523 Lenovo ThinkSystem Intel X710-DA2 PCIe 10Gb 2-Port SFP+ Ethernet Adapter

Storage

Optics

46C3447 Lenovo ThinkSystem 10Gb SFP+ SR Optical Transceiver
QSFP-100G-CWDM4-AR Arista 100GBASE-CWDM4 QSFP28 Optical Transceiver Module
QSFP-100G-LR4-AR Arista 100GBASE-LR4 QSFP28 Optical Transceiver Module

iSCSI and NVMe/TCP over Ethernet: how it fits together

File storage (NFS and SMB)

Server or clientEthernet NICEthernet switchdata or storage VLANNAS or scale-outNFS, SMB, S3 ports

Front-end ports face the clients; back-end ports (on scale-out systems) connect the nodes to each other and need their own switch pair.

Servers

Adapters for the server

4XC7A08238 ThinkSystem Broadcom 57414 10/25GbE SFP28 2-Port PCIe Ethernet Adapter
4XC7A08248 Lenovo ThinkSystem Mellanox ConnectX-6 Dx 100GbE QSFP56 2-Port PCIe Ethernet Adapter
4XC7A08295 ThinkSystem Intel E810-DA2 10/25GbE SFP28 2-Port PCIe Ethernet Adapter
7XC7A05523 Lenovo ThinkSystem Intel X710-DA2 PCIe 10Gb 2-Port SFP+ Ethernet Adapter

Storage

Optics

46C3447 Lenovo ThinkSystem 10Gb SFP+ SR Optical Transceiver
QSFP-100G-CWDM4-AR Arista 100GBASE-CWDM4 QSFP28 Optical Transceiver Module
QSFP-100G-LR4-AR Arista 100GBASE-LR4 QSFP28 Optical Transceiver Module

File storage (NFS and SMB): how it fits together

Hyperconverged cluster

HCI nodedrives plus 25GbETwo Ethernet switchesstorage and VM trafficMore HCI nodesthree or more

Plan at least two 25GbE ports per node to two switches; all-NVMe clusters often move to 100GbE.

HCI nodes

Adapters for the server

4XC7A08238 ThinkSystem Broadcom 57414 10/25GbE SFP28 2-Port PCIe Ethernet Adapter
4XC7A08248 Lenovo ThinkSystem Mellanox ConnectX-6 Dx 100GbE QSFP56 2-Port PCIe Ethernet Adapter
4XC7A08295 ThinkSystem Intel E810-DA2 10/25GbE SFP28 2-Port PCIe Ethernet Adapter
7XC7A05523 Lenovo ThinkSystem Intel X710-DA2 PCIe 10Gb 2-Port SFP+ Ethernet Adapter

Optics

46C3447 Lenovo ThinkSystem 10Gb SFP+ SR Optical Transceiver
QSFP-100G-CWDM4-AR Arista 100GBASE-CWDM4 QSFP28 Optical Transceiver Module
QSFP-100G-LR4-AR Arista 100GBASE-LR4 QSFP28 Optical Transceiver Module

Hyperconverged cluster: how it fits together

Plan and size it

Draw this setup in the topology planner mrplanb.com
Add up rack power and space rack-density.com
iSCSI explained mrplanb.com
Virtualization storage Ledger: scored storage platforms mrplanb.com
Network monitoring tools compared mrplanb.com
Lenovo ServerProven (Lenovo compatibility) lenovo.com

Check compatibility with Lenovo

Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that Lenovo has tested with the Lenovo ThinkSystem NE1072T RackSwitch.

Compatibility Lenovo ServerProven (options and OS compatibility)
Specifications Lenovo Press product guides
Support Lenovo Data Center Support

Equivalent models from other brands

FAQ

What uplink speeds are supported on the NE1072T?

Its six QSFP28 ports support native 100GbE and 40GbE speeds, and can be split into 4x 25GbE or 4x 10GbE channels.

Does the NE1072T support multi-chassis link aggregation?

Yes, Virtual Link Aggregation Group (VLAG) technology allows two switches to form an active-active paired fabric.

Buying or selling ThinkSystem NE1072T RackSwitch?

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Sources

Lenovo ThinkSystem NE1072T RackSwitch Product Guide, checked 2026-10-28