Notebook solid-state hard disk interface Analysis Knowledge Science

Solid-State hard disk to read and write faster, shockproof resistance high, low power consumption, no noise, portability and other advantages by the vast number of consumers and recognition. As long as the budget is adequate, everyone will consider adding solid-state drives to their love machines, or directly buying computers with solid-state drives. For notebooks, upgrading solid-state drives is a big boost, and how to choose the right notebook solid. Solid-State hard disk to read and write faster, shockproof resistance high, low power consumption, no noise, portability and other advantages by the vast number of consumers and recognition. As long as the budget is adequate, everyone will consider adding solid-state drives to their love machines, or directly buying computers with solid-state drives. For notebooks, upgrading solid-state drives is very large, how to choose the right notebook solid-state hard drive, in fact there are many noteworthy places. Next Pepsi Network Small series for you to introduce the notebook solid-state hard disk related knowledge and purchase skills, hope to help everyone.

. What is a solid-state drive

SSD is a hard disk made of solid-state electronic memory chip array, which consists of control unit and storage unit (medium). 　　 From the storage unit to differentiate, solid-state hard disk can be divided into NAND flash flash chip, DRAM chip two types. Based on flash solid-state hard disk: the use of NAND flash chip as a storage unit, but also by the vast numbers of netizens known as "SSD." Most of our daily see is this solid-state hard drive, its internal structure is relatively simple, the internal main body using a PCB board, and the above integrated control chip, cache chip (part not) and for storing data flash chip. The advantage of this solid-state drive is the high mobility, and the data protection is not controlled by the power supply, can adapt to a variety of environments, is very suitable for individual users to use.

DRAM based SSD: its use of DRAM as a storage unit, it follows the traditional hard disk design, the majority of operating system file system tools for volume setup and management, and provide industrial standard PCI and FC interface for connecting the host or server, the application scope is relatively narrow. This is a high-performance memory, and the service life is very long, the drawback is the need to connect the independent power supply to protect data security, if the power loss will be lost data, so the DRAM type of solid-state hard disk for the server and other large equipment use, not suitable for individual users to use.

Notebook solid state hard disk interface common types

Based on NAND flash chip notebook solid-state drive, the common types of interface including SATA, mSATA and NGFF, and then we introduce each. SATA interface is the current popular type of interface, by the vast majority of mechanical hard disk used, our most common solid-state drives are also SATA interface, and have adopted a 2.5-inch design, easy to upgrade notebook users. mSATA interface is a mini version SATA interface, this type of solid-state hard disk size, single-sided thickness of only 4.85mm, does not occupy too much notebook space. mSATA interface solid-state drives are no less fast, theoretically msata will provide the same speed and reliability as SATA interfaces. Due to the small size and other advantages, has been more and more notebook use.

The NGFF interface is a new generation of solid-state hard disk interface standards that Intel is tailor-made for, with a conventional size of only 42mmx22mm, one-sided layout nand Flash particle thickness of 2.75mm, double-sided thickness of the grain is 3.85mm, for mSATA, the volume further reduced, very suitable for the ultra-thin ultra-polar products. Speed, the use of pci-express X2 transmission Standard NGFF interface of solid-state drives, the maximum reading speed can reach 700mb/s, write to 550mb/s,4k Random Read and write ioPS can reach 100K and 90K, compared to mSATA, transmission speed will be faster. NGFF solid-state drives increase capacity by changing the length of the mSATA interface SSD compared to the NGFF standard width, thickness are the same, only a different length, can increase the capacity by increasing the length, more flexible application.

Apple version pcle SSD, NGFF SSD and mSATA SSD in addition to the common notebook SSD above, there is currently a special customized Apple version of the Pcle SSD, which was developed by a Sata-io standard organization and connected to the PCI-E bus, At the same time, the special SSD with mSATA interface can reach the reading and writing speed near 800mb/second. Conclusion: Relative to the notebook, the use of space small, fast hard drive is the hard truth. Intel's NGFF interface solid-state drives, which are small in size and more competitive in speed, are believed to be widely used in the future. At this stage, SATA and mSATA SSD are still the mainstream.