SSD
noun[ C or U ]
computing specializeduk /ˌes.esˈdiː/ us /ˌes.esˈdiː/
abbreviation for solid-state drive: a device for storing computer information that is often used in computers instead of a traditional hard disk because it is much faster: 固态硬盘（solid-state drive的缩写）
A hybrid drive combines the features of an HDD and an SSD in one unit.混合硬盘将硬盘和固态硬盘的特色结合在一个单元中。
SSD is getting more and more common for servers.
Compare
HDD
Installing an SSD on your laptop will have big power savings.
Cheap SSD drives are already becoming available.
SSD technology still has a finite limit on the number of times an address can be overwritten before it fails.
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