Solid State Disk (Solid State Disk, Solid State Drive, SSD for short) is a computer external storage device based on permanent memory, such as flash memory or non-permanent memory, industrial storage synchronous dynamic random access memory (SDRAM).
SSD hard disks have high bandwidth, high read and write, high IOPS, low latency (they have no seek time at all), low power consumption and other performance advantages, improve the function and performance of the system, use hierarchical storage technology, use a combination of SSD and mechanical disks Disk array technology solves the bottleneck problem of system performance and saves costs.
The second is the solid-state caching technology that you understand. The data caching technology in the SSD transfers hot data into the cache for access to speed up application access. The performance will gradually improve as more data enters the cache. If you think that most or All applications can be improved in performance, you should consider using SSD caching technology.
For individuals or businesses, the value of data is immeasurable. The motherboard, CPU... of a computer can be replaced or upgraded if it is broken, but if the hard disk is broken, it is not just a hard disk that is lost, but the data in the hard disk is more important ( Databases, photos, papers...) will be lost, or even more irreparable losses; so you can see the importance of choosing a good hard drive.
Mechanical hard disks (HHD) use magnetic heads to read and write data on high-speed disks, so shockproof is very important. Since solid state hard disks do not have the rotating medium of mechanical hard disks, they have excellent shock resistance and the operating temperature range of their chips. Very wide (-40-85 degrees Celsius). Booting speed is the strength of SSD. A computer equipped with SSD hard disk can even start up in a few seconds, while the booting speed of HDD can even exceed one minute. SSD does not have a motor to accelerate the rotation process, does not require a mechanical structure, and is completely semiconductorized. There is no data search time, delay time, and disk seek time. The data access speed is fast, and the startup speed is also fast.
The SSD in the notebook computer can provide fast startup and comprehensive performance, and can significantly increase the battery standby time, because the power consumed by the SSD is very small; some applications, such as document processing, macro forms, databases, and videos, are in use In the case of SSD, its response speed is very fast, and the file copying speed between notebooks is also very fast; therefore, the effect of using solid-state drives is not only reflected in the performance improvement of the application.
As long as the size of SSD is 1.8 inches and 2.5 inches, using 1.8 inches on a notebook is more space-saving and lighter. Due to the technical bottleneck of HHD itself, the disk data transmission rate, especially the internal transmission rate of the hard disk has reached its limit. Simply increasing the speed can not solve the fundamental problem, but also brings a series of problems such as large operating noise and large heat generation. , There are no mechanical moving parts inside the SSD, no mechanical failures, and no fear of collisions, shocks, and vibrations. Even when the laptop is accidentally dropped or collided during high-speed movement, the possibility of data loss can be minimized. SSD disks do not need to be read, so they are relatively quiet, especially when recording audio. It is a wise choice not to have noisy sounds in your recorded audio. SSD is a wise choice.
Ultrabooks are usually used in office, business trip, travel and other occasions. They do not need to run large games, high-definition movies, etc., occupying hard disk space. They only need to store PPT, documents, emails, pictures... take up less hard disk space resources, so use low capacity The SSD solid state drive (128G) is basically enough.
The most popular solution for desktop computers now is the SSD+HHD hybrid hard disk mode, which stores the operating system and commonly used software in the SSD solid state drive to speed up the switching speed and the opening speed of the software, while movies, data, etc. occupy a lot of space. Resources are stored in traditional HDD hard drives. This saves costs and increases speed.
Many people worry about the lifespan of SSDs. Solid state hard drive flash memory has the problem of erasing and writing times. A complete erasing and writing of flash memory is called 1 P/E. Therefore, the life of flash memory is based on P/E. Let's take an example. For example, a 128G SSD solid-state drive is counted as a p/E once a 128G file is completely written. It is processed as 4 high-definition movies + documents per day, and 60G is written every day, which is completed every 2 days on average. P/E, then there are 183 p/E times a year. If an SSD has a lifespan of 3000 P/E, then it can be used for 16 years. An ordinary home computer usually upgrades the computer every 3-5 years, enthusiasts It is faster to update the hardware, so are you still worried about the life of the SSD?
In summary, SSD hard drives can be more simply, flexibly and efficiently used in computers, and SSD hardware storage is the best choice.