Netxol Core (Hardware)
X100 cluster interconnect: DAC vs short-run optical
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SSamir Al-Otaibipreguntó · Jul 8, 2026, 02:03 PM
Building out a 3-node X100 cluster, all racks adjacent. Datasheet says QSFP-DD ports handle both DAC and optical. Sales suggested DAC for cost and lower latency, but our facilities team prefers optical for hot-swap cleanliness. Anyone deployed both and have thermal / signal-integrity notes? Cluster interlink runs at 200 Gbps aggregate here.
#x100#cluster#dac#optical#cabling
2 respuestas·631 vistas
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SSamir Al-Otaibirespondió · Jul 9, 2026, 01:47 PM
3-node X100 cluster here, running QSFP-DD DAC interconnect for 6 months. Zero issues, zero re-seats. Thermal was fine — the DAC connectors don't add anything meaningful in our layout.
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MMin-Jun Parkrespondió · Jul 11, 2026, 09:29 AM
We went optical purely for the cable management story (you can pull a fibre without disturbing anything else). If your facilities team has strong opinions, don't fight them — the perf delta is negligible at 200G aggregate.
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