A solid-state drive (SSD) is a solid-state storage device that uses integrated circuit assemblies to store data persistently, typically using flash memory, and functioning as secondary storage in the hierarchy of computer storage. It is also sometimes called a semiconductor storage device, a solid-state device or a solid-state disk, even though SSDs lack the physical spinning disks and movable read–write heads used in hard disk drives (HDDs) and floppy disks.

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Compared with electromechanical drives, SSDs are typically more resistant to physical shock, run silently, and have higher input/output rates and lower latency. Type of SSDs SATA SSD PCIe SSD M.2 SSD U.2 SSD NVMe SSD . SSD Failure Symptoms: Your computer won’t boot; No bootable device error message (on Windows), or question mark (on Apple devices) It runs extremely slow OS / Applications / Software often freeze or crash Blue Screen of Death errors Memory Dumps errors

SSHD stand for solid-state hybrid drive. It's a traditional hard disk with a small amount of solid-state storage built in, typically 8GB. The drive appears as a single device to Windows (or any other operating system), and a controller chip decides which data is stored on the SSD and what's left on the HDD.

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