The hybrid hard drives , also known as units of hybrid solid state ( SSHD ), combine the characteristics of conventional hard disk with similar benefits to a SSD . They are hard drives that have a high-capacity buffer, because they integrate a non-volatile memory cache or even a small solid storage unit (SSD). Unlike conventional hard drives, hybrid or SSHD hard drivesthey keep the motor and the dishes at rest, without consuming energy or generating heat. The data is written to the buffer flash memory which is non-volatile, that is, there is no risk of data loss if the power goes out. When it comes to reading the data stored on the plates of the hybrid hard drive, that information is then stored in the buffer memory.
The HDDs hybrid or hybrid solid state units have various advantages over conventional hard drives, especially for integration into laptop computers. The start of the system is much faster and generally increases the speed of access to data. A not having the plates spinning all the time, consume less energy ; thus, the autonomy of the battery is increased. They also have greater reliability , thanks to the flash memory of the buffer. the performanceThe machine is superior for many applications, for example, for storing multimedia content, for editing large video files or for generating reports from a database. And multitasking capabilities are also accentuated .
The hard disks or hybrid SSHD usually thinner than equivalent capacity hard drives standard solutions. They usually use standard data transfer interfaces such as SATA (Serial Advanced Technology Attachment). However, at the same capacity, they are more expensive than traditional discs, and the existing offer on the market is still not very wide. Manufacturers such as Seagate , Samsung or Hitachi have been pioneers in launching this type of hybrid storage solutions.
One of the more recent examples of solid state hybrid drives are those developed by Western Digital in collaboration with SanDisk . They are the result of SanDisk's expertise in flash memory manufacturing and WD's in hard drive technologies. WD Black SSHD Hybrid Drives are now available to manufacturers and integrators. They are 2.5 inches and have a thickness of only 5 millimeters ; the 500GB capacity drive is almost half the size of conventional 2.5-inch 9.5mm portable hard drives. The interface is SATA . The WD Black SSHDThey are designed for the thinnest ultraportable computers on the market; the 500GB model incorporates a 24GB SanDisk iSSD that acts as a non-volatile write cache memory and is manufactured using 19nm (nanometer) technology.