Hybrid drive
（重定向自Hybrid disk）
![A high-level comparison of SSHD and dual-drive or FCM designs](/Images/godic/202501/19/FCM_vs._SSHD_Design_SVG.svg2052.png")
In computing, a hybrid drive (also known by the initialism SSHD) is a logical or physical storage device that combines NAND flash solid-state drive (SSD) with hard disk drive (HDD) technology, with the intent of adding some of the speed of SSDs to the cost-effective storage capacity of traditional HDDs. The purpose of the SSD in a hybrid drive is to act as a cache for the data stored on the HDD, improving the overall performance by keeping copies of the most frequently used data on the SSD.