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NVIDIA Spectrum-3 SN4600

CurrentNetwork2U fixed switch
NVIDIA Spectrum-3 SN46002U fixed switch64 ports12.8 Tbps

The NVIDIA Spectrum-3 SN4600 is a 2U cloud-scale spine and leaf switch delivering 64 ports of 100G/200G QSFP56 (or 32 ports of 400G QSFP-DD). Delivering 12.8 Tbps of aggregate throughput powered by the Spectrum-3 ASIC with a 64 MB shared buffer, the SN4600 provides dense spine aggregation for high-bandwidth AI computing fabrics and cloud datacenters. It represents a high-value asset in secondary equipment markets for multi-terabit interconnects.

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Specifications

BrandNVIDIA
FamilySpectrum
Form factor2U fixed switch
ReleasedApr 2020
Ports64x 100G/200G QSFP56 or 32x 400G QSFP-DD ports
Switching capacity12.8 Tbps / 8.4 Bpps forwarding capacity
SiliconNVIDIA Spectrum-3 ASIC with 64 MB fully shared dynamic buffer
LatencyUnder 400 nanoseconds low cut-through latency
Cooling and powerDual hot-swappable AC/DC power supplies and reversible fans

Generations

Compatible parts

Cables

Transceivers

Works together

How the NVIDIA Spectrum-3 SN4600 connects to servers, storage and the network: 3 ways, with the parts and products on each path.

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

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

Storage

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

Adapters for the server

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

Adapters for the server

Optics

Hyperconverged cluster: how it fits together

Plan and size it

Check compatibility with NVIDIA

Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that NVIDIA has tested with the NVIDIA Spectrum-3 SN4600.

Equivalent models from other brands

FAQ

What is the maximum 400GbE port density on the SN4600?

Configured for 400G mode, the SN4600 supports up to 32 wire-speed 400GbE QSFP-DD ports.

How large is the dynamic packet buffer in the SN4600?

It features a 64 MB fully shared dynamic buffer to eliminate packet drops during heavy RoCE bursts.

Buying or selling Spectrum-3 SN4600?

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