What are the benefits of SSDs compared to HDDs

Which is better, SSD or HDD.

SATA HDD:Advantages: large capacity, low capacity, mature technology, reliable storage.

Disadvantages: the speed is slower than that of the solid state, the slower the medium is to the edge, the safety is not high (it is easy to break in the event of power failure and collision), and there is a slight noise when reading data.

SSD Solid State Hard Drive:Advantages: no noise, small size, fast speed, more power saving, light weight, heat generation.

Small. Disadvantages: Relatively small capacity, **expensive.

A mix of HDDs and SSDs complement each other.

Features of SSD: high read and write performance, disadvantages: high capacity and low capacity;

Features of mechanical hard disk: **Low capacity and high disadvantages: low read and write performance;

The two can be used together to complement each other's strengths, taking into account the read and write performance of the hard disk and the capacity of the hard disk. There are two common HDD+SSD schemes:

This part is for solutions with larger SSD capacities.

2) Install the IntelrapidStart software, install all the data on the HDD, and the SSD for the acceleration function.

This part is the solution for when the SSD has a small capacity and you can't install the system.

Comparison of the difference between SSD and HDD:

SSD advantages: no noise, extremely fast read and write speed, vibration resistance, low heat generation, lightweight, etc.

Advantages of mechanical hard disk: large capacity, cheap.

Disadvantages of SSD: **High, small capacity, SSD has a limited number of PE writes, so the life span is lower than that of HDD.

Disadvantages of HDD: high noise, fear of vibration, high heat generation, slow read and write speed.

Extended Information: Solid State Disk or Solid State Drive (SSD), commonly known as Solid State Drive. Solid-state drives are hard disks made with an array of solid-state electronic memory chips.

Mechanical hard disk is a traditional ordinary hard disk, which is mainly composed of: platter, head, platter hinge and control motor, head controller, data converter, interface, cache and other parts. The head can move along the radius of the platter, and with the high-speed rotation of the platter at several thousand revolutions per minute, the head can be positioned at the designated position of the platter for data reading and writing operations.

There are many advantages of solid state drives, fast speed, small size, easy to carry, not afraid of vibration, the only disadvantage is that it is more expensive, and the only advantage of mechanical hard disk compared to solid state drives is that it is cost-effective, and it costs less money per GB, and the others have become disadvantages.

Differences and benefits between SSDs and HDDs

Difference: Read and write speed.

Because the structure of SSDs and HDDs is completely different, and there is a qualitative leap in read and write speed. Generally speaking, the read and write speed of HDDs is between 60 and 170MB s, while the speed of SSDs can reach up to about 540MB s. So, in terms of file transfer, read/write, system operation, etc.

SSDs are much more efficient than HDDs.

Operational noise. Friends who have used desktops and laptops should have a clear feeling. Because today's laptops are generally SSDs, you can clearly feel the quietness of the computer running.

Especially for some mechanical hard disks that have been used for a long time, you can occasionally hear the sound of grinding between the hard disk needle and the disk.

Power consumption and heat generation.

The power consumption and heat generation of mechanical hard disks are much greater than those of solid state drives, because solid state drives are generally MLC particles, so the power consumption is low, and it has a very low power standby function. Mechanical hard disks need a head to read data, so they need the disk to rotate, with a maximum speed of 7200rpm, which naturally generates a lot of heat. After a period of computer exercise, it can also be clearly felt with the hands.

Earthquake resistance. Because the SSD is stored in particles and soldered to the motherboard, as long as it is not violently destroyed, the possibility of breaking is relatively small. There is a high-speed magnetic head inside the mechanical disk, and the disk needs to rotate at high speed during operation, so there must be a certain gap, so once it falls, it is easy to make the magnetic head, causing the magnetic head to be damaged or the disk to be scratched, resulting in damage to the hard disk.

Data recovery. When the hard disk deletes the file, it only deletes the file index, and the specific file is still stored on the disk, so most of the data can be retrieved through some data recovery software. The SSD is to clear the original data before the new data can be written to the hard disk, whether it is to delete the file or format, the trim instruction will clear the data and index, which has the advantage of making the SSD equivalent to a new state, and the performance is unlikely to be reduced, so once the SSD file is deleted, the possibility of retrieving it is almost 0.

Advantages of both

SSD: 1Quick start, no motor to accelerate the process of rotation.

Under the same configuration of the two computers, a laptop with an SSD took only 18 seconds to turn on the desktop and a laptop with a traditional hard drive took a total of 31 seconds, which is almost half the difference.

3.Relatively fixed read time. Because the addressing time is independent of where the data is stored, disk fragmentation does not affect the read time.

HDDs: Large capacity and low price. It's good to be able to buy a large capacity hard drive for very little money, and to install games or something.

There are a few reasons why SSDs are slow to write:

1.SSDs do not have 4k aligned manuscript shipments.

2.SSD 3ahci IDE mode error.

3.SSD disk mode error.

4.The solid-state hard digging disk SATA2 3 interface is different.

5.SSDs use asynchronous flash memory.

About what SSDs are and the advantages over HDDs:

Solid-state drive is referred to as fixed disk, and the solid state drive is a hard disk made of a solid-state electronic memory chip array, which is composed of a control unit and a storage unit (flash chip, DRAM chip). SSDs are exactly the same as ordinary HDDs in terms of interface specifications and definitions, functions and usage methods, and are completely consistent with ordinary hard sail beam disks in terms of product shape and size. It is widely used in military, vehicle, industrial control, ** monitoring, network monitoring, network terminals, electric power, medical, aviation, navigation equipment and other fields.

The operating temperature range of its chips is very wide, commercial products (0 70) and industrial products (-40 85). Although the cost is higher, it is gradually becoming popular in the DIY market. Because SSD technology is different from traditional hard disk technology, many new memory manufacturers have emerged.

Manufacturers only need to buy NAND memory, and then cooperate with the appropriate control chip, and then they can make SSDs.

Data storage speed: In the same configuration, the read speed of the gold speed SSD can basically be around 500MB s, while the mechanical hard disk is within 150MB s. Such a difference in speed will be very noticeable to the improvement of the computer's response speed.

Shock-resistant and drop-resistant: Traditional hard disks (ATA or SATA) are disk-type, and data is stored in disk sectors. The SSD is made of flash memory particles, so there are no mechanical parts inside the SSD, so even if it is moved at high speed or even when it is flipped and tilted, it will not affect the normal use, especially when used in laptops.

Power consumption: Also because there are many fewer mechanical parts, the power consumption of SSDs is also better than that of traditional HDDs.

Weight: SSDs are lighter in terms of weight, a few tens of grams lighter than regular inch drives.

Noise: Because the solid-state drive has no mechanical parts and flash memory chips, it has the characteristics of low heat generation, fast heat dissipation, etc., and there is no mechanical motor and fan, it is silent when working, and the noise value is 0 decibels, which makes the traditional mechanical hard disk much inferior.

The speed is fast, and it is not easy to be damaged in a collision.

1. Shockproof and drop-resistant: mechanical hard disks are all disk-type, and the data is stored in the disk sector. The SSD is made of flash memory particles (i.e., memory, ***, USB flash drive and other storage media), so there are no mechanical parts inside the SSD SSD, so that even in the case of high-speed movement or even with flipping and tilting, it will not affect the normal use, and the possibility of data loss can be minimized in the event of collision and **.

Compared with mechanical hard disks, solid hard has an absolute advantage.

2. Data storage speed: According to the evaluation data of the PConline evaluation room, the performance of SSDs is more than 2 times higher than that of mechanical HDDs.

3. Power consumption: The power consumption of solid-state drives is also lower than that of mechanical hard disks.

4. Weight: SSDs are lighter in terms of weight, 20-30 grams lighter than conventional inch hard drives.

5. Noise: Because the solid hard belongs to no mechanical parts and flash memory chips, it has the characteristics of low heat generation and fast heat dissipation, and there is no mechanical motor and fan, and the working noise value is 0 decibels. Mechanical hard drives are much inferior.

6. **: As of now (2014 11 23), the 128GB SSD of the common brand is about 450. And the 1TB HDD** is only about 360. SSDs are more expensive and less cost-effective than HDDs**.

7. Capacity: The maximum capacity of SSD is currently 4t inches.

8. Service life: SLC only has a read and write life of 100,000 times, and the low-cost MLC has a read and write life of only 10,000 times. As a result, HDDs have a longer lifespan than SSDs.

1. The principle of storage is different, the solid-state drive is semiconductor storage, and the mechanical hard disk is electromagnetic storage.

2. The speed is different, the SSD is very fast, much faster than the mechanical HDD.

3. The weight is different, the SSD is light in weight, and the HDD is heavy.

4. The volume is different, the volume of the mechanical hard disk is relatively large because of the mechanical moving parts, while the solid state disk can be made very small without the shell, etc.

5. The noise is different, because the SSD has no moving parts, it runs without noise, while the mechanical hard drive has slight noise.

6. The power consumption is different from the heat generation, and the power consumption of the SSD is low, and the heat generation is small.

7. The anti-drop and anti-shock performance is different, the solid state drive is not afraid of vibration, and the mechanical hard disk is easy to be scratched by the platter due to collision due to the relative movement of the head and the platter and the distance between the rubber wheels is very close.

How to distinguish between mechanical hard and solid state drives, one looks at the identification of HDD as a mechanical hard disk, SSD as a solid state drive, two can be queried according to the model, three look at the shape, if it is a sheet, it must be a solid state drive rather than a mechanical hard disk.

Solid-state drives have a lifespan, but now consumer-grade SSDs basically solve this problem, but they will slow down over time, for example, after 2 years, his read and write speed is only 70% of the original. It is characterized by fast read and write speed, and the Samsung 840 is currently the most trustworthy manuscript

The read and write speed of the Pro has surpassed that of SATA

The upper limit of 600m s of 3 interfaces was up. All aspects of performance surpass HDDs.

The downside is that it's expensive, and there's no possibility of a lot of short-term price reductions. If you don't have power for 3 months, you may lose your data.

Mechanical hard disk, with the best 10,000 rpm hard disk, the read and write speed is only about 220MB, and the better home mechanical hard disk, 7200 rpm, 1T single disk is only 190MS

The advantage is that it is cheap, and the 500g hard disk is less than 350 yuan... The data is stored stably, and theoretically the data can be stored for decades as long as it is not destroyed by fire or the like.