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Explain the use of Elastic Resize vs. Classic Resize in Redshift.

SQLeasy0.4 min readPremium
Frequency
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Asked at 1 company
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487
questions in SQL
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130E|271M|86H
in this category
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1,863
across 7 categories
Asked at these companies
Capco
Expert AnswerPremium
72 wordsInterview-ready
**Elastic Resize**: Add/remove nodes same type; data stays in place via leader node redistribution; ~2–5 min; no data copy. **Classic Resize**: Change node type or count; full data redistribution; hours for large clusters. **Why Elastic**: Quick scale for concurrency (e.g., holiday); same node type required. **Why Classic**: Migrate dc2 → ra3 (managed storage); major capacity change. **Scalability**: Elastic limited to 2× nodes; Classic supports full resize....
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