A solid state drive (SSD) is superb in every aspect of storage specifications.
Storing data is handled without movable parts making the device more durable and reliable especially useful in high-performance applications. Since storage is done at the electronic scale and not by the motor-driven spindle that moves over the rotating rigid platter used in hard disk drives, faster data access is achieved. Reading and writing gigabytes of information are performed at around 500 megabytes per second depending upon the components installed within the solid state drive.
Improvements in SSD technology have been very rapid in the recent years resulting to lowering down of costs. Before 2009, the primary technology employed for memory storage was volatile dynamic random-access memory (DRAM). Although DRAM was faster than current standards, it suffers from higher costs and volatility of stored data so that the device requires constant power supply.
Dramatic lowering down of costs was achieved in 2009 when NAND flash non-volatile memory was beginning to be commercialized. At reading and writing speeds playing around 500 megabytes per second, flash-based memory devices became more popular than the preceding technology which was more expensive. In addition, flash-based memory devices use the non-volatile design of storing data which implies that data is secure even when power supply is cut off. Furthermore, persistent data is automatically stored on the memory device on sudden power outage.
Most of the solid state drive products available in the market today vary in reading and writing speeds due to the second primary component known as the controller. This core component is a microprocessor embedded in a SSD device with the sole purpose of executing codes at the firmware level. Data encryption is handled by this component as well as read-write caching. Error correction and garbage collection implementations ensure the integrity of data. Finally, wear leveling, bad block mapping, and read scrubbing keep data access fast, efficient, and reliable.
The solid state drive is aimed towards replacing the traditional hard disk drive technology which is now falling short of the speed requirements in current standard applications. Thus, most commercial SSD devices follow the same form factor as the HDD. Typical packages follow the 1.8-inch, 2.5-inch and 3.5-inch form factors at common storage capacities ranging between 64 GB and 256 GB. In specific applications, however, other form factors of various shapes imaginable are also available as used in mobile devices that have unique and unusual designs. With much adaptability features embedded in its design, the SSD is certainly going to replace the HDD.