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Dell PowerSwitch Z9432F-ON

CurrentNetwork1U switch
Dell PowerSwitch Z9432F-ON1U switch25.6 Tbps

The Dell PowerSwitch Z9432F-ON is a 1U 32-port 400GbE spine switch powered by 7nm Broadcom Tomahawk 4 silicon, delivering 25.6 Tbps switching performance with substantial power efficiency improvements. Built to handle GPU-to-GPU RoCEv2 fabrics, distributed deep learning clusters, and petabyte-scale storage interconnects, the Z9432F-ON represents state-of-the-art open networking.

Also written as: PowerSwitch Z9432F-ON, Dell Z9432F-ON, Z9432F 400GbE AI Spine Switch

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Specifications

BrandDell
FamilyPowerSwitch Z-Series
Form factor1U switch
ReleasedApr 2021
Port configuration32x 400GbE QSFP-DD ports + 2x 10GbE SFP+ ports in 1U
Switching capacity25.6 Tbps full-duplex throughput powered by Broadcom Tomahawk 4 silicon
Operating systemONIE; supports Dell SmartFabric OS10, Enterprise SONiC, and Linux NOS
TelemetryBroadcom BroadView telemetry, advanced congestion notification, and PFC watchdog
Power supplyDual redundant hot-plug 2400W Platinum power supplies

Generations

Compatible parts

Transceivers

Rail kits

Works together

How the Dell PowerSwitch Z9432F-ON connects to servers, storage and the network: 4 ways, with the parts and products on each path.

iSCSI and NVMe/TCP over EthernetFile storage (NFS and SMB)Hyperconverged clusterGPU cluster fabric

iSCSI and NVMe/TCP over Ethernet

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

Optics

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

File storage (NFS and SMB)

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

Storage

Optics

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

Hyperconverged cluster

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

HCI nodes

Optics

Hyperconverged cluster: how it fits together

GPU cluster fabric

InfiniBand adapters and switches must match the generation: HDR is 200Gb, NDR is 400Gb. VPI adapters such as ConnectX-6 and ConnectX-7 can run either InfiniBand or Ethernet.

Servers

GPUs

Adapters for the server

GPU cluster fabric: how it fits together

Plan and size it

Check compatibility with Dell

Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that Dell has tested with the Dell PowerSwitch Z9432F-ON.

Equivalent models from other brands

Buying a used PowerSwitch Z9432F-ON: what to check

Inspect 400GbE QSFP-DD ports for physical contact integrity, verify Tomahawk 4 initialization in ONIE, check dual 2400W power supplies, and test OS10/SONiC operating system deployment.

FAQ

What is the power efficiency improvement of the Z9432F over previous generations?

7nm silicon reduces power consumption per gigabit by up to 40% compared to earlier 16nm 400GbE switches.

Can the Z9432F-ON support dense 100GbE deployments?

Yes, using QSFP-DD to 4x QSFP28 breakout cables, it can present up to 128 individual 100GbE ports.

Buying or selling PowerSwitch Z9432F-ON?

New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.

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Sources