A solid-state drive also known as a solid-state disk or electronic disk, though it contains no actual disk is a Data Recovery device using integrated circuit assemblies as memory to store data. SSD technology uses electronic interfaces compatible with traditional block input/output hard disk drives, permitting simple replacement in common applications. Additionally, new I/O interfaces like SATA Express, have been designed to address specific requirements of the SSD technology.
SSDs have no moving mechanical components. This distinguishes them from traditional electromechanical magnetic disks such as hard disk drives (HDDs) or floppy disks, which contain spinning disks and movable read/write heads. Compared with electromechanical disks, SSDs are typically more resistant to physical shock, run silently, have lower access time, and less latency.
The traditional spinning hard drive (HDD) is the basic nonvolatile storage on a computer. Which means, it doesn’t go away like the Feed data on the system memory when you turn the system off. Hard drives are metal platters with a magnetic coating. That coating stores your data, reports, a high-definition movie, or your digital music collection. A read/write head on an arm accesses the data while the platters are spinning in a hard drive enclosure.
An SSD does much the same job functionally saving your data while the system is off, booting your system. As an HDD, instead of a magnetic coating on top of platters, the data is stored on interconnected flash memory chips that retain the data even when there’s no power present. The chips can either be permanently installed on the system’s motherboard like on some small laptops and ultrabooks, on a PCI/PCIe card, in some high end workstations, or in a box that’s sized, shaped, and wired to slot in for a laptop or desktop’s hard drive common on everything else. These flash memory chips are different from the flash memory in USB thumb drives in the type and speed of the memory, but suffice to say that the flash memory in SSDs are faster and more reliable than the flash memory in USB thumb drives. SSDs are consequently more expensive than USB thumb drives for the same capacities.
Even with the huge difference in capacity, many people are finding that most computers have far more storage capacity than they typically have. Only a large collection of raw digital photo files and high definition video files will likely fill up hard drives quickly. As a result, solid state drives will generally offer a sufficient level of storage for most laptop computers. Additionally, high performance external options thanks to USB 3.0, eSATA and even Thunderbolt make adding extra storage space with an external hard drive quick and easy for non-essential files.