Bootstrap

New node joins → streams data from existing owners of its token ranges. TB-scale = hours to days. Monitor progress.

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nodetool rebuild

Adding new DC. Rebuild pulls data from existing DC. Multi-DC deployment step.

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Streaming rate limit

stream_throughput_outbound_megabits_per_sec. Default 200 (Mbps). Raise on fast networks + fast disks. Beware disk saturation.