ZFS RAM Requirements: 8GB, 16GB, or 32GB? 💾

In this video, we dive deep into how much RAM is actually needed for ZFS to perform well. Is 8GB enough? Does 32GB make a big difference? We test ZFS on TrueNAS Scale with 3 different RAM configurations: 8GB, 16GB, and 32GB — and show you real results with read/write performance, ARC cache behavior, and RAM consumption.
Whether you’re building a home NAS, a file server, or just exploring ZFS for the first time, this video gives you the insight you need to make the right hardware choices.
✅ Topics Covered:
• What is ZFS and why RAM is important
• ARC, L2ARC, and ZIL explained simply
• Test environment (TrueNAS Scale, RAIDZ1 setup)
• Real read/write benchmarks
• How ZFS scales with memory
• Tips for small-memory systems (8GB and below)
💡 Bonus: Tips on avoiding L2ARC and deduplication pitfalls with low RAM.
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