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hybrid hard disk drive (HDD)

Definition

hybrid hard disk drive (HDD)

A hybrid hard disk drive is an electromechanical spinning hard disk that contains some amount of NAND flash memory. The NAND flash acts as a non-volatile cache, enabling faster access to data.

Related glossary terms: solid state drive (SSD) capacity, stand-alone solid state storage (SSS), solid state module (SSM), RAM-based solid state drive (SSD), client solid state drive (SSD), queue depth, Fast Guide to RAM, semiconductor fab, flash cache appliance, floating gate

This was last updated in January 2012

Posted by: Margaret Rouse

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More News and Tutorials

MRAM technology likely choice as post-flash solid-state storage

NAND flash-based storage is becoming a common alternative, but NAND flash could soon be replaced by newer forms of non-volatile memory like MRAM technology.
Micron brings out 2.5-inch SAS SSD, anticipates decline of SATA SSD

Micron launched the 6 Gbps, 2.5-inch P140m SAS SSD this week, and expects SAS to overtake SATA as the most popular SSD interface by 2016.
EMC pushes out XtremIO flash array, more PCIe flash

EMC makes its XtremIO all-flash array available on a limited basis, also adds eMLC PCIe server-side flash cards and rebrands VFCache.

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- Comparison of solid-state storage technologies
- Define SSD: Top terms you need to know

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