# HAMR vs SMR: Density Technology vs Shingled Tracks

> HAMR and SMR solve different density problems. HAMR changes the physical write process so high-coercivity media can support smaller stable bits. SMR overlaps tracks, creating zones or bands whose rewrites need management. Current Seagate product tables demonstrate both directions: Mozaic HAMR CMR drives are sold at high capacities, while separate Exos SMR capacities extend even higher.

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## Primary source
- [HAMR vs SMR: Density Technology vs Shingled Tracks](https://cloudzat.com/hamr-vs-smr/index.md): Clean Markdown version of the full Cloudzat guidance.

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