The hottest mechanical hard disk is going downhill

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Mechanical hard disk goes downhill: solid state disk is becoming more and more fragrant

18. 2 methyl chloride impregnation experiment: gb/t 13526 (2) 007 rigid polyvinyl chloride (PVC-U) pipe 2 methyl chloride impregnation experiment method original title: mechanical hard disk goes downhill: solid state disk is becoming more and more fragrant source: Zhongguancun

with the continuous upgrading and iteration of flash memory technology, the yield of flash memory chip has been greatly improved, coupled with the continuous increase of the original factory capacity, Nowadays, the price of SSD is very low compared with a few years ago

the price of mainstream solid state drives is basically The range of 5 yuan and 1GB, with its fast performance and relatively suitable price, has now become a necessary installation for DIY players, game enthusiasts, ordinary savers and other PC demand groups. A few years ago, the mechanical hard disk, which was in the ascendant, began to decline

ten years ago, Lianpo was old.

computer players of all ages know that before 2010, mechanical hard disk used to occupy the hard disk market with the two advantages of "high capacity price ratio and high cost performance"

however, in the face of the growing trend of solid-state disk, it is trapped by the influence of two factors: the speed of hard disk and the capacity of a single disk, and there has been no breakthrough technological progress, so it gives solid-state disk the opportunity to quickly occupy the market

in addition to technical reasons, the performance price ratio of mechanical hard disk is gradually destroyed by itself

according to the data, from 2010 to 2011, taking the 500GB mechanical hard disk as an example, the price has exceeded 500 yuan, and the capacity price ratio has exceeded 1gb/1 yuan. It can be seen that the capacity price ratio of mechanical hard disk is also losing its advantage, so the large mechanical hard disk began to decline, and the scenery is no longer good

how fast is your computer in ten years?

five years ago, when talking about solid-state drives, we all had two feelings: first, the speed is fast, and second, the price is high. By 2015 or so, we will mainly install mechanical hard disks

the traditional mechanical hard disk HDD uses a high-speed rotating disk to store data and read and write through the magnetic head. This process is similar to the previous VCD playing discs. In this process, there is a delay, and it cannot burst multi-directional read and write data at the same time, so its speed will be very slow

take a practical example. After your system has been used for a long time, the boot time of the mechanical hard disk is basically more than 1 minute, and in some extreme cases, it may be opened for 3 minutes. Moreover, the hard disk is still reading loudly after entering, and it can only be used after a period of time

if your computer uses a solid-state drive, it can be started in 10 seconds, and it can be used immediately without waiting time

next, through the comparison of a set of test data, we can get a glimpse of the performance differences between computer hard disks in the next ten years

comparison between a mechanical hard disk and Samsung 970evo plus

friends who are familiar with hard disk products should not be unfamiliar with these data. This is a group of typical comparison charts of hard disk performance tests

the first line of data represents continuous reading and writing, involving a single large file, such as a movie

in our daily use, it is generally game installation, movie copy, compressed package copy, etc. the gap between the two is nearly 20 times. Do you have any experience

the second line is 4K random reading and writing. For example, our operating system and various software are composed of thousands of several MB or even several KB. After reading one, the system needs to quickly find the next file and then read the next one. The speed of solid-state file finding is very fast

machines need to spend a lot of time looking for files, and the speed of solid-state random reading and writing is almost 100 times that of machines, so it is reasonable to use the computer Caton of mechanical hard disk

the third behavior is 4K deep queue, which is generally more games and professional software, and the gap between the two is more than 1000 times

the fourth line is the access time. The mechanical access time reaches 15 milliseconds, while the solid-state access time is only a few tenths of a millisecond

through comparison, we can see the gap between mechanical hard disk and solid state. It is not difficult to see that mechanical hard disk has been very slow by 2020

with the accelerated popularity of the era of content creators, ordinary consumers' demand for memory bandwidth is bound to further increase, while the speed of 100mb/s+ such as mechanical hard disk is completely inadequate

take personal experience as an example, there is an office computer around me, which has been in service for about 89 years, and it is very stuck. The CPU is e5800, equipped with a mechanical hard disk

later, a solid-state disk was replaced and the system was redone. Now there is no problem in normal tabulation, and the speed is not too slow

has the SSD industry been going backwards for ten years

in addition to the revolutionary progress from mechanical hard disk to solid-state disk, with the rapid development of solid-state disk, there is a rumor of "industry regression" in the market

some users and practitioners believe that from SLC to MLC, then from MLC to TLC, and even now to QLC and PLC, the rewritable life of flash memory particles is significantly shortened. Isn't this an industry regression

in fact, in the author's opinion, whether the industry has regressed or not cannot be simply evaluated from one dimension, but should be judged from the aspects of technology experience and price, in which market choice may be the decisive factor

the following solid-state drive is an SLC product launched by Samsung brand storage in 2006, with a capacity of 32g and a reading and writing speed of 49. The most unique and revolutionary part of this new 3D printing technology developed by researchers is that it can use magnets to accurately arrange ceramic fibers m/s and 29m/s. Under the web server, the maximum IOPs is less than 2200k

the book data cannot be compared with the current TLC SSD, but it was already very strong at that time. Its price is roughly $25/gb, that is, 150~175 yuan per GB. What do you think of the price

in the 10th century, Samsung 860evo can be said to be a very popular TLC solid-state drive in recent years. The current price of 500GB capacity is 639 yuan

the continuous read-write performance is 500mb/s+, the performance is almost ten times higher than that of the first generation SLC SSD, and the unit price has also been significantly reduced. Can you still say that the SSD industry is going backwards

in fact, with the rapid development of 3D NAND technology, the original flash memory manufacturers led by Samsung have realized the transfer from 2D plane to 3D NAND, and the storage capacity per unit area is also increasing

Samsung began to mass produce the first generation of 3D v-nand and the first generation of v-nand products in 2013, and began to mass produce the fifth generation of v-nand 3D stacked flash memory and 9x layer stacking design in 2018; It has been leading the continuous innovation in flash memory capacity and performance in the storage industry

so we can see that in recent years, many manufacturers have developed and used 9x layer 3D NAND products

as for Samsung, it continues to promote the development of 100 + layer 3D NAND. According to the current development trend, we may see solid-state products of 100 + layer 3D NAND as early as the beginning of next year

with the acceleration of technological evolution and innovation, the popularity of storage media has increased, and the manufacturing cost of solid-state disk has also been reduced on a large scale. More and more people buy SSD, which once again promotes manufacturers to carry out technological innovation and evolution

this is actually a virtuous cycle of the development of the solid state disk industry, or the hard disk industry

therefore, we can find that with the continuous increase of 3D NAND stack height, the unit storage density of NAND flash reaches 1TB, and the price of unit storage is actually declining. SSD products have become the mainstream products in the industry under the condition of continuous decline in price and continuous improvement in performance

some people may ask that behind the increase of unit capacity and the reduction of price, the durability of storage particles is actually sacrificed. How do you explain this

in fact, historical experience tells us that existence is reasonable, or more exaggerated, existence is leading

that is to say, the current mainstream particles must be the best choice under the comprehensive consideration of market, technology, industry and other dimensions and levels

whether SLC at the beginning of the birth of solid-state drives, MLC from behind, or tlc/qlc, which is becoming the mainstream, these are actually historical choices or the best choices in the current technological environment

is a comprehensive choice considering consumption capacity, technical level and particle's own physique. This choice can often only be matched and tried by top manufacturers in the industry. For example, storage giant Samsung has launched QLC series products since last year, which is a signal of the historical development of solid-state drives and will be one of the best solutions for a long time in the future

back to the original question, "is the SSD industry retreating?", In fact, the market has given the answer

where will the mechanical hard disk go in ten years

at present, 5g, cloud computing, IOT and other cutting-edge technologies relying on big data have begun to land, and the data storage industry has really ushered in the era of the big bang, so the development trend of the current storage industry has returned to the upward direction

the magnitude of data storage will also achieve a "great leap forward" growth. According to the prediction, the amount of data storage 3. According to the stress (strain) cycle times when the sample breaks, it can be divided into: low cycle fatigue test and high cycle fatigue test will jump from the current 32zb to more than 100zb in 2023, and the capacity demand has ushered in a substantial increase

according to the current development technology of mechanical hard disk, the server SAS hard disk has the highest performance at 15000 rpm

2.5-inch mechanical hard disk can achieve the maximum speed of 10000 rpm

sata3.5-inch hard disk has a maximum speed of 7200 rpm, which is also the most mainstream mechanical hard disk at present

it is well known that 2. According to the above vibration measurement and spectrum analysis, mechanical hard disk has become the preferred storage medium in most data centers at present because of its low cost and relatively stable storage performance. However, with the continuous innovation of 3D flash memory technology, the cost of flash memory also began to decrease with the technological iteration and large-scale application

therefore, QLC flash memory particles, which are based on the inherent advantages of flash memory storage, such as small space, high performance, strong adaptability, and can be applied to various storage environments, will become the mainstream of data centers in the future

from the 96 layer 3D NAND to the 100 + layer, in the foreseeable future, solid state disk will become the first choice of data centers instead of mechanical hard disk, or it will become a reality. However, according to the development law of the industry, it is expected that the mechanical hard disk will still exist within a decade, but it will no longer be the mainstream first choice whether on the consumer side or the enterprise side

written at the end

from the history of hard disk development, it is an inevitable trend for hard disk to become smaller and larger

however, due to the different application fields of HDD and SSD, it is still unlikely that SSD will completely replace HDD in the future

but in the long run, due to the cost reduction and technological innovation, such as QLC flash memory technology and 3D TLC technology, the cost of SSD has decreased. In the visible future, it is obvious that SSD will eventually replace HDD to occupy the dominant position

an industry professional once said that the cost difference between SSD and HDD per GB reached more than ten digits, and he would never see the intersection of SSD and HDD per GB


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