# Seagate Exos 24TB: Exos X24 vs Exos M Models

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Purpose: Compare exact Seagate Exos 24TB models by generation, SATA or SAS, cache, speed, security variant, warranty and current price.
Direct answer: At 24TB, Exos X24 and Exos M are different products. ST24000NM002H is a conventional X24 CMR SATA ISE model with FastFormat support, while ST24000NM001K is an Exos M HAMR-CMR SATA model with a different published transfer rate and sector-format specification.

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