solid state driveSSD OEM ssd 128gb hard disk presumably read this article of children’s shoes will not be strangers<span< span=””> style=”color: rgb(65, 150, 120);”>ssd 128gb, including the mobile phone in everyone’s handssd 128gb, There is also the presence of NAND flash memory inside, and the NAND and the main control are encapsulated inside the mobile phone flash memory, commonly known as eMMC. Hongwang Semiconductor ICMAX focuses on embedded memory for 15 years, and today we will tell you about the past and present lives of mechanical hard disks and solid-state drives.
(ICMAX SSD, image source, )
mechanical hard disk:
Since mechanical hard disk technology predates the birth of solid-state drives, the first mechanical hard disk is also the world’s first hard disk. The world’s first hard disk was born in 1956, designed and manufactured by IBM, its name is IBM 350 RAMAC, the early mechanical hard disk is huge, and its mechanical structure is relatively backward and rough in our current view. After nearly 30 years of development, it was finally in the late 80s that the 2.5-inch HDD we know was born.
compared to mechanical hard disks, SSDs appear much later. The world’s first SSD was born in 1976, designed by Dataram, and the SSD, with a capacity of 2MB, which is not worth mentioning today, was already quite large at the time, and in the late 90s, there were finally some manufacturers who began to try to use Flash manufacturing SSDs for difficult market exploration. In 1997, Altec Computer Systeme launched a parallel SCSI Flash SSD, followed by BiTMICRO in 1999 to launch an 18GB Flash SSD, since then, Flash SSD gradually replaced the RAM SSD, became the mainstream of the SSD market, and modern solid-state drives began to take shape.
(Samsung SATA SSD, image source)
In September 2006, Samsung launched the PRAM SSD, another SSD technology, using PRAM as a carrier, Samsung hopes to replace NOR Flash. In November, Microsoft’s Windows Vista came to the market as the first PC operating system to support SSD special features. We all know what happened later. SSDs are used in notebooks, and in 2009, the capacity of SSDs began to catch up with HDDs, and gradually eroded a large part of the HDD market in this decade.
(Hongwang Semiconductor SSD, image source ICMAX official website)
mechanical hard disk mechanical hard disk is a traditional ordinary hard disk, mainly by: platter, magnetic head, platter shaft and control motor, magnetic head controller, data converter, interface, cache and other parts.
the head can move along the radius of the platter, coupled with the high-speed rotation of the platter of several thousand revolutions per minute, the head can be positioned at the specified position of the platter for data reading and writing operations. The information is written to disk by the electromagnetic flow through a magnetic head close to the magnetic surface, and the electromagnetic flow changes the polarity in such a way that the information can be read in the opposite way. As a precision device, dust is its enemy, so the air entering the hard disk must be filtered.
the internal structure of the SSD is very simple, the main body of the SSD is actually a PCB board, the components are divided into: the main control chip, flash memory chip, firmware algorithm. The reading and writing principle of the solid-state drive, under the command of the main controller, completes the reading and writing operation of the flash memory chip (as shown below is the basic unit of NAND flash memory) through the transmission of electrical signals. Therefore, the read and write process of SSDs relies on electrical signals. In contrast, electrical signals operate much faster than physical machinery, so SSDs run much faster than mechanical hard drives.
3, this life — Application direction
to a large extent, the difference between SSDs and HDDs can be equated with the advantages of SSDs. For example, SSD boot fast, fast reading speed, small size, light weight, easy to carry, these determine the application field of SSD and HDD different.
because the SSD
is an electronic device structure, the shock resistance is far more than the mechanical hard disk, and the wide temperature SSD working temperature can reach an amazing -40~85°C. Therefore, it has a wide range of applications in the fields of military, vehicle, industrial control, video surveillance, network monitoring, network terminals, electric power, medical, aviation, navigation equipment and other fields. For example, the products of Samsung and Hongwang Semiconductor in this article have product lines involving military and industrial industries.
Mechanical hard drives have a longer lifespan than SSDs. Because SSDs use electronic structures and mechanical hard disks use physical structures, SSDs are irretrievable once the data is devastatingly damaged, so they are not as good as mechanical hard disks in terms of confidentiality. Therefore, at this stage, the mechanical hard disk is still irreplaceable in some segments under the condition of being completely at a performance disadvantage. Such as data storage, military industry, etc. Since the price of a single GB mechanical hard disk still has certain advantages over solid-state drives, consumers can consider using mechanical hard disks as file and media storage disks.
Hongwang Semiconductor explains the past and present lives of SSDs and mechanical hard disks, as well as their current status. ICAMX predicts that in the coming period, the possibility of SSDs completely replacing mechanical hard disks is still unlikely, but in the long run, due to cost reduction technology innovations, such as QLC flash memory technology and 3D TLC technology caused by the cost of solid-state drives, it remains to be tested whether SSDs will eventually replace mechanical hard disks in the foreseeable future. solid state driveSSD OEMssd 128gb