Why this answer matters
Link aggregation can improve aggregate multi-client bandwidth or resilience depending on mode, but it does not magically double every single TCP transfer.
2 requirements3 verification steps1 primary source
Requirements
What has to be true
- 2.5GbE-capable switches/clients/cabling for multi-gig links.
- Correct switch/NAS trunking configuration if aggregation is used.
Verify it yourself
Use this test sequence
Change one variable at a time so you know which requirement made the difference.
- 1
Confirm each NAS link negotiates at 2.5GbE.
- 2
Test one client direct through a known 2.5GbE path.
- 3
Evaluate aggregation with the intended multi-client workload rather than one browser download.
Limits
What this answer does not prove
- Real file transfer also depends on disks, RAID, protocol and client storage.
- Browser timing tools cannot inspect QTS RAID or disk health.
Relevant DeviceOK checks
Test the part you can observe
Data Transfer Time CalculatorEstimate ideal transfer time from data size and an entered link rate.
→Browser Latency TestMeasure several browser-to-DeviceOK request round trips as a quick connection responsiveness check.
→Network Information CheckRead browser-exposed connection type, estimated round-trip time, downlink, Save-Data state, and online status where supported.
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