After several years of use some computer owners hear a certain type of noise from the hard-disks. It is the sign of hard-disk failure. You should replace the hard-disk very soon; otherwise you may lose your valuable data that were stored on the hard-disk. If there was an SSD or solid state drive, then there is a great chance that the computer will go for more years without any trouble. Solid state drive has many advantages over a spinning hard drive, some are discussed as follows.
Components of the drives:
For providing a clear idea about both of the drives, the components of the drives have been presented here. There are platters or flat circular disks which are fixed on a spindle in a typical HDD. Data is recorded onto the disk. Non-magnetic material is used to make the platters; then magnetic material is used to coat the platters. To read or write data from or to the disk R/W heads are used. There is a motor to spin the platters at high speeds, and another motor to position the R/W heads. There are no moving parts in an SSD; microchips are used in such drives. There are controller, cache, and batteries or capacitors in a solid state drive.
Reliability and Durability:
As there are moving parts in the HDD, they create heat and lead to failure after several years of use. In many cases, the hard disk drive fails first in the life of a notebook computer. On the contrary, there is no moving part in an SSD. Hence, heat dissipation is reduced here. Virtually an SSD does not create any noise. SSDs have better vibration and shock tolerance. SSDs can tolerate vibration up to 2000 Hz. Hence, SSDs are much more reliable and durable when compared to these factors of the HDDs. Another advantage of the SSD is that it needs lesser electricity than the HDD. With the same power a computer with an SSD will go more time than the same computer having an HDD.
Weight, Speed and Defragmentation:
As SSDs do not have motors, spindle, and the platters, they are lighter than HDDs. You will also get faster performance from SSDs. In SSDs data transfer system is random access, whereas it is sequential in HDDs. HDD needs time to move the heads to seek data, but SSDs need not this time. HDDs support fewer I/O (input output) operations in each second when compared to SSDs. Periodically defragmentation is needed for smooth performance in HDDs, it is not necessary for SSD drives.