Question 2: What are the advantages and disadvantages of SSDs? Boot very fast, decompression is also fast, anti-virus is also fast, the only disadvantage of SSD is that there is life, the key is still to look at what particles, now there are MLC particles is best, can be used with ordinary, I am now SSD installed system, mechanical hard disk storage information, SSD is recommended to buy Samsung, or magnesium light. Any questions continue to ask. I hope to be able to help you,!
Question 3: Benefits and drawbacks of SSDs Advantages:Fast read and write speeds, shock and drop resistance, low power consumption, no noise, wide range of operating temperatures, lightweight
Disadvantages:Small capacity, life expectancy limitations, high selling price
Advantages
Fast read and write speeds: Flash memory is used as the storage medium, and read speeds are faster relative to mechanical hard drives. SSDs don't use magnetic heads, and seek time is almost zero. sustained write speeds are amazing, and most SSD vendors will claim that their SSDs have sustained read/write speeds of more than 500MB/s. SSDs are not just about sustained reads and writes, but also about random read/write speeds, which is the ultimate in SSDs, and is most directly reflected in the majority of day-to-day operations. Related to this, there is also a very low access time, the most common 7200 rpm mechanical hard disk seek time is generally 12-14 milliseconds, while the solid state hard disk can easily reach 0.1 milliseconds or even lower. [5] Shock and drop resistance: Traditional hard drives are disk-based, with data stored in disk sectors. And solid state drives are made using flash memory particles (i.e., mp3, U disk and other storage media), so there are no mechanical parts inside the SSD solid state drive, so that even in high-speed movement or even accompanied by flipping and tilting will not affect the normal use of the case, and in the case of collision and shock can be minimized when the possibility of data loss. Compared with traditional hard disk, solid state hard disk has an absolute advantage. [5] Low Power Consumption: SSDs consume less power than traditional hard disks. No noise: SSDs have no mechanical motors or fans and operate at 0 dB. Flash-based SSDs consume less energy and generate less heat during operation (but high-end or high-capacity products consume more energy). There are no mechanical moving parts inside, so there is no mechanical failure and no fear of collision, shock, or vibration. Because SSDs use flash memory chips without mechanical parts, they are characterized by low heat generation and fast heat dissipation. [5] Wide Operating Temperature Range: Typical hard disk drives can only operate in the range of 5 to 55 degrees Celsius. While most solid state drives can operate at -10 to 70 degrees Celsius. Solid state drives are smaller and lighter than mechanical hard drives of the same capacity. The interface specifications and definitions, functions and usage of SSDs are the same as those of ordinary hard disks, and the shape and size of the products are also the same as those of ordinary hard disks. The operating temperature range of its chips is wide (-40~85 degrees Celsius). Lightweight: SSDs are lighter in weight, 20-30 grams lighter compared to regular 1.8-inch hard drives. ConsCapacity: The maximum capacity of an SSD is only 4TB, and the Optimus MAX (Optimus Prime) released by SanDisk[6]
SATA SSD,SSD SSD
Lifetime Limitations: The SSD flash memory has a limit on the number of times it can be erased and written to, and this is where many people criticize it for its short lifespan. A full erase of the flash memory is called a P/E, so the lifetime of the flash memory is measured in P/E. The lifetime of a 34nm flash chip is about 5000 P/Es, while the lifetime of a 25nm chip is about 3000 P/Es. With the improvement of the firmware algorithms of the SSDs, the newer SSDs are able to provide fewer unnecessary writes. A 120G SSD, to write 120G of files to be counted as a P / E. Normal use of ordinary users, even if the daily write 50G, an average of 2 days to complete a P / E, 3,000 P / E can be used for 20 years, to that time, the SSD has long been replaced by more advanced equipment (in practice, the user more operations are random writing, rather than continuous writing, so in the lifetime, the chance of bad sectors will be higher). In addition, although each sector of an SSD can be repeatedly erased and written 100,000 times (SLC), certain applications, such as the operating system's LOG records, may read and write to a particular sector many times over, and the actual lifespan of an SSD in this case is untested. However, through the management of the storage unit by balanced algorithms, its expected life will be extended. SLC has a write life of 100,000 times, the lower cost of MLC, the write life is only 10,000 times, and the cheap TLC flash memory is even more pathetic 500-1,000 times. High price: 128GB SSDs on the market cost around RMB 550, while 256GBs cost around RMB 950 (2014 price). Calculated, the price per GB is around RMB 4.2 (2014 price), which is still higher than the traditional mechanical hard disk price of RMB 0.3 (2014 price) per GB ...... >>
Question 4: What is a solid state drive? What are the advantages and disadvantages compared to traditional hard disks? Solid state hard disk is composed of a control unit and a storage unit (FLASH chip), simply put, it is an array of solid-state electronic storage chips and made of hard disk (the current maximum capacity of 416GB), solid state hard disk interface specifications and definitions, functions and methods of use with the ordinary hard disk is exactly the same, . The shape and size of the product is also completely consistent with the ordinary hard disk, including 3.5, 2.5, 1.8 types. Because the solid state hard disk does not have the rotating medium of ordinary hard disk, and therefore excellent shock resistance, while the working temperature is very wide, extended temperature electronic hard disk can work in -45 ℃ ~ +85 ℃. Widely used in military, automotive, industrial control, video surveillance, network monitoring, network terminals, power, medical, aviation, etc., navigation equipment and other fields.
In layman's terms: current hard drives (ATA or SATA) are disk-based, where data is stored in disk sectors. Solid state drives are made using flash disk (i.e., current memory, MP3, USB flash drives, and other storage media), and thus have a very different appearance than traditional hard drives. Solid state drives are the future trend of hard disk development. Now, Samsung and other manufacturers have released a variety of SSDs, including Apacer's latest release of new products, high-speed SATA SSDs developed using a single control chip, with continuous access speeds of up to 200MB/sec, and a capacity of up to 128GB, compared to the current market continuous access speeds of about 50-60MB/sec SATA interface SSDs. Apacer is currently 2~3 times faster than other SSDs on the market!
Question 5: What are the benefits and drawbacks of SSDs? The benefits and drawbacks of SSDs are: limited lifespan, high cost, and difficult to recover data.
Lifetime limitations: SSD flash memory has a limit on the number of times it can be erased, which is why many people criticize it for having a short lifespan. A full erase of the flash memory is called a P/E, so the lifetime of the flash memory is measured in P/E. The lifetime of a 34nm flash chip is about 5000 P/Es, while the lifetime of a 25nm chip is about 3000 P/Es. As SSD firmware algorithms improve, the newer SSDs are able to provide fewer unnecessary writes. A 120G SSD, to write 120G of files to be counted as a P / E. Normal use of ordinary users, even if the daily write 50G, an average of 2 days to complete a P / E, 3,000 P / E can be used for 20 years, to that time, the SSD has long been replaced by more advanced equipment (in practice, the user more operations are random writing, rather than continuous writing, so in the lifetime, the chance of bad sectors will be higher). In addition, although each sector of an SSD can be repeatedly erased and written 100,000 times (SLC), certain applications, such as the operating system's LOG records, may read and write to a particular sector many times over, and the actual lifespan of an SSD in this case is untested. However, through the balanced algorithm of the storage unit management, its expected life will be extended. SLC has a write life of 100,000 times, the lower cost of MLC, write life is only 10,000 times, and the cheap TLC flash memory is only a poor 500-1000 times.
Priced high: 128GB SSD products on the market are priced at about 350 RMB, while 256GB products are priced at about 500 RMB or more, calculated at about 2 RMB per GB (in 2016), while mechanical hard drives have now become cabbage prices, at just 2-3 cents per GB. However, compared to the previous SSD has been much cheaper, and now the price can be accepted, of course, large-capacity and high-end SSD prices are still quite expensive, tens of thousands of them.
Data is not easy to recover: this is the main disadvantage of solid state hard disk, but also the most deadly. Mechanical hard disk deletion is only the deletion of the file table, the real file is still there. And solid state hard disk has a garbage collection mechanism, when the system is idle, it will recycle the storage area occupied by the original deleted data, and erase the data in these areas to ensure fast writing. It is because of the garbage collection mechanism that once the data on a solid state disk is deleted, it may be actually deleted by the master at any time to free up blank blocks. So, those data recovery software won't be able to recover data from data blocks that don't actually exist anymore.
Although there are drawbacks to SSDs, the pros outweigh the cons, and you will never want to go back to a mechanical hard drive with an SSD. SSDs ensure that your system and programs run smoothly, so you can use an SSD to load your system and software, and a mechanical hard drive for storage, so it's foolproof!
The big names to buy are, of course, still foreign, after all, it is the crooked invention of the SSD, Intel, Kingston, Pocket PC, Samsung, Toshiba, and so on. The best domestic I think is Teco core, has its own official mall, full interface SSD are available, and is the world's first Type-C mobile SSD manufacturers, now also launched a fingerprint encrypted mobile SSD, currently in the Jingdong crowdfunding, very good!
Question 6: What are the disadvantages of SSD solid state drives? Disadvantages: expensive
Lifespan is not necessarily short
Question 7: What is the difference between a solid state drive and a mechanical hard disk? What are the features and drawbacks? Solid state and mechanical than read and write speeds are faster than the undesirable damage The disadvantage is that the capacity is small and too expensive
Question 8: What is a solid state hard disk? What are the advantages and disadvantages compared to an ordinary hard disk? Solid state drives and mechanical hard drives use two popular permanent storage methods.
Mechanical hard drives use magnetism as a medium to save data, using magnetic heads to read and write to the poles of tiny magnets on the disk surface to read and write data.
Solid state drives use flash memory as the storage medium, and the principle of USB flash drives is almost the same, the flash memory looks very much like the CPU, the memory kind of chip, and the same as the memory does not have any active mechanical parts inside.
Mechanical hard disk read and write in different locations, the magnetic head to move back and forth, in the same place to write a continuous period of data when the efficiency is higher, random sequential reading and writing efficiency is very low. Flash memory, on the other hand, is not used, and there is almost no speed difference between random and sequential reads and writes.
Ordinary U disk single flash chip read and write speed can not be as good as the mechanical hard disk, and solid state hard disk is actually the flash of the whole column, the use of more than one flash parallel read and write to achieve or even more than the mechanical hard disk read and write speed, parallel to the number of flash without upper limit, read and write speed, capacity and flash chip number proportional to the price is also proportional to the price.
In addition to high speeds, solid state drives have the advantage of low power consumption, no noise, and low failure rates. Theoretically, there is a limit to the number of times a flash memory can be written to, and with current technology the same location will fail and fail if it is written to more than 1 million times, but the operating system can use a different writing strategy for SSDs than for mechanical hard disks, where writes are evenly spread across the entire space, so there is almost never a bad day for some of the writes.
The price of SSDs with the same capacity on the market today is much higher than that of mechanical hard drives, but the gap is narrowing, and there may be a day when the capacity/price ratio approaches the level of a mechanical hard drive, and the mechanical hard drive will have to be retired from the stage of history. At present, SSD+Mechanical HDD is the configuration of high-end hosts and laptops. SSD can be used as a system disk to increase the speed, and Mechanical HDD can be loaded with infrequent data such as movies, documents, etc., so that it can take into account the performance and capacity.
That said, the term "hard disk" is interesting, in fact, from the end of the last century, magnetic media storage devices are divided into floppy disk and hard disk (Soft drive and Hard drive), the difference is indeed the disk surface soft and hard. Soft disk is lightweight and so used for portable storage, hard disk is stable and high-speed for host internal storage. Therefore, the term "solid state drive" has become very inappropriate, it does not have a disk, there is no such thing as hard, but only the same function and "hard disk" only (used for internal storage of the host computer), so called in fact shows the "hard disk" has become "hard drive". This name actually indicates that "hard disk" has become synonymous with "host internal storage" (I'm not talking about memory, you know). The term "solid-state drive" comes from the English term SSD: "Solid-state drive" (also called "Solid-state disk"). (but also called "Solid-state disk", but quite unprofessional), solid-state translated into solid state would have been strange, in fact, there is no internal moving parts, solid meaning, drive is often translated as "drive", referring to any storage device in the computer, anyway, there is no "hard" or "hard" in this phrase. Anyway, there is no "hard" or "disk" in this phrase. Apple has been naming the storage in their Macs "flash" rather than "SSD" for this reason.
Question 9: Advantages and disadvantages of SSDs Fast boot up, fast data readout, fast open software programs, fast game load readout, disadvantage is the lower capacity, the price is relatively expensive compared to mechanical hard drives.
Question 10: What are the advantages and disadvantages of SSDs and mechanical hard disks? The first is that it is not a good idea to use a hard disk to store your data. Solid state hard disk compared with ordinary hard disk, has the following advantages: 1. start fast, no motor to accelerate the spinning process. 2. 2. no magnetic head, fast random read, read delay is minimal. According to the relevant tests: two computers in the same configuration of the computer, equipped with solid state hard disk notebook from boot to appear desktop a *** only 18 seconds, while equipped with a traditional hard disk notebook with a total *** with 31 seconds, the two have almost half the gap. 3. Relatively fixed read time. Since addressing time is independent of where the data is stored, disk fragmentation does not affect read times. 4. DRAM-based SSDs are extremely fast to write to. 5. No noise. Because there is no mechanical motor or fan, the noise level is 0 dB during operation. Some higher-end or high-capacity products are equipped with a fan, so noise is still generated. 6. 6. Low-capacity flash-based SSDs consume less energy and generate less heat during operation, but high-end or high-capacity products consume more energy. 7. There are no mechanical moving parts inside, so there will be no mechanical failure, and there is no fear of collision, shock, or vibration. So that even in high-speed movement and even with the flip tilt will not affect the normal use of the situation, and in the laptop accidentally dropped or collided with hard objects can minimize the possibility of data loss. 8. Wider operating temperature range. Typical hard disk drives only operate in the 5 to 55 degree Celsius range. Most SSDs can operate in temperatures from -10 to 70 degrees Celsius, and some industrial-grade SSDs can operate in temperatures from -40 to 85 degrees Celsius, or even greater. 9. Low-capacity SSDs are smaller and lighter than drives of the same capacity. However, this advantage diminishes as the capacity increases. Up to 256GB, SSDs are still lighter than regular hard drives of the same capacity.