What is an ssd drive. What is an SSD drive and how to use it correctly. Logical Interface Compatibility

Solid state hard drives for computers are gadgets that allow you to store various data and also process them at very high speed. Secret high performance lies in the fundamentally different design of this gadget. It does not have rotating plates over which the writing head floats - as in mechanical analogues. This is the main reason for the excellent performance.

Despite the fact that the type of disks in question have both their advantages and disadvantages, they are increasingly being installed in laptops and other computers along with their outdated counterparts. But it is increasingly rare to find PC models that use only old-type drives.

What it is

A solid-state drive is a special, non-mechanical storage device that stores all information in memory chips located on a special board. In addition to them, the design of the device in question also contains a large number of other components.

There are two main types of drives of this kind:

This designates a type of microcircuit used for storing and processing data. There are no serious differences between them, but DRAM disks are equipped with a built-in battery. Sometimes you can find SSHD hybrid devices on sale. Both regular disks and memory chips are located in one case. Performing a read-write operation faster HDD, but slower than a regular SSD.

Disk device

This component of a personal computer consists of the following components:

The most important parts are the controller and flash memory. They are the main reason for the large increase in performance of this device.

Controller

The controller itself contains:

The SSD controller performs the following functions:

• read, write, cache;
• data encryption;
• monitoring (S.M.A.R.T.);
• data compression (some controller models).

Flash memory

Most often, these gadgets use a NAND type chip. It is volatile and has a relatively low cost compared to its counterparts and allows you to save data even in the absence of a constant power supply.

NAND memory can be of various types:

The MLC type fits more than one bit of data into one cell. But at the same time, schemes of this kind have some disadvantages, such as a small resource, as well as low read and write speeds. When using the SLC type, only one bit is written to one cell. This provides greater durability and processing speed. The disadvantages include the price - it is 2 times higher than the cost of MLC.

How does it work

The operation of a regular HDD is extremely simple; reading and writing information in it can be carried out at the same time. SSD works on a different principle. This provides a significant increase in productivity. In the memory circuits of the gadget in question, all operations are performed in a sector manner. Recording is carried out in blocks of 4 KB, and deletion of data is carried out in blocks of 512 KB.

When processing information, the following operations are performed:

• read memory block;
• all required bytes are modified;
• the processed block in the memory circuit is erased;
• the moving algorithm is executed, a different location of the block is calculated;
• the block is rewritten to a new sector.

Video: HDD and SSD parameters

Drive reliability

SSDs are considered to be much more reliable than HDDs. And there are good reasons for this. The service life of a solid-state drive depends on many factors.

Most important:

• total amount of information being overwritten;
• the number of overwrites of the entire memory volume.

It is these two factors that determine how long the gadget can serve its user. But the most important advantage in comparison with a conventional HDD is its immunity to mechanical stress. SSDs can be moved, shaken, and even dropped while reading and writing data. This will not harm the information stored on it in any way. For a regular HDD such actions are unacceptable.

Photo: 3 terabyte external hard drive

Also, the gadget in question is more resistant to various kinds of electromagnetic fields and similar influences. The possibility of damage to the circuit due to a nearby strong magnet or object with similar properties is practically completely eliminated. This is especially important for tablets, laptops and other devices that move with their owner.

Safety

One of the most important advantages of SSD is the security of data storage. It is connected precisely with the recording method - it is performed electrically, which allows for a more complete erasure of previously recorded information. Besides standard method You can also use specialized software that performs complete removal.

Recording to conventional HDDs is performed mechanically. Accordingly, all kinds of traces always remain. Which leads to the possibility of data theft or recovery after deletion. Almost all SSD controllers, as well as SSHD today, are equipped with special protection that allows you to encrypt the recorded data. This is why it is difficult to restore erased information.

Optimization

The gadget of this type operates extremely quickly without additional optimization tools. This is possible due to the absence of the need to move a special head unit. This saves a lot of time. However, with the help of certain actions you can make the work even faster.

• indexing;
• swap file;
• Prefetch and SuperFetch;
• System Restore.

To disable data indexing, just go to the SSD properties and in the window that opens, uncheck the box next to “allow file indexing.”

Then you should close the window and continue working. Thus, you can achieve a productivity increase of 3-4%.

Transferring or complete shutdown swap file.

To do this, just follow these steps:

• open the control panel;
• launch a shortcut called administration;
• select service section.

Find the required item and double-click on it. We put a dot in front of “without a paging file”.

To disable Prefetch, you need to find the key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SessionManager\Memory Management\PrefetchParameters. After this, you should change the value of the parameters EnablerPrefetcher and EnableSuperfetch to 0.

To disable SuperFetch, you need to find the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SessionManager\Memory Management key. It contains parameters ClearPageFileAtShutdown and LargeSystemCache, their value should be changed to 0.

By performing all of the above steps, you can speed up the functioning of your personal computer by as much as 15-20%. This will have a positive impact on work as operating system, as well as various programs that require constant access to the drive.

Video: HDD reliability statistics

Advantages and disadvantages

Drives of this type have both their advantages and disadvantages.

The advantages include the following features:

• high data processing speed (all modern models are more than 200 Mb/s);
• low power consumption (1 W less compared to a HDD of the same size);
• almost complete absence of heating during operation;
• complete silence during operation.

Testing conducted by Intel showed that during operation, laptops equipped with solid-state drives heat up 12.2 0 C less than similar models equipped with conventional HDDs. Drives of this type have significantly less weight, which is especially important for portable devices.

There are also various kinds of disadvantages:

• relatively high cost;
• limited number of rewrite cycles;
• impossibility of restoring previously deleted information.

The cost of an SSD is its most important disadvantage. The price for 1 GB of information is on average several times higher than the price for the same amount of HDD. But every day the cost of these gadgets is falling, which is why SSDs are being used more and more often.

Used memory cells have a limited resource. That is why you should be very careful about the page file and various applications that often access the ROM. Although the resource in the gadgets sold today is quite large, it is necessary with the help special programs carry out constant monitoring of the condition.

The inability to recover data is both an advantage and a disadvantage. Since this feature allows you to minimize the likelihood of information theft. But at the same time, there is no possibility of recovery as a result of erroneous deletion.

Review of prices by manufacturer

The cost of gadgets of the type in question from different manufacturers can vary greatly. But when performing reviews and objectively evaluating similar models from various brands, it turns out that the markup is mostly for the brand.

Today it is becoming clear that drives of this type are the future, and conventional HDDs are gradually becoming a thing of the past. Every day SSD is becoming more and more popular, this is a consequence of its portability and high speed. An increasing number of different laptops, tablets, smartphones and just ordinary personal computers equipped with equipment of the type in question.

Magnetic hard drives are being replaced by solid state drives, abbreviated as SSD (Solid State Drive). And although the word drive is mentioned in the abbreviation, new information storage devices can hardly be called disks, since there is nothing resembling a disk in them.

Let's figure out what good solid-state drives (SSDs) are and how they differ from the familiar hard magnetic drives (HDDs).

Advantages of SSD over HDD.

The most important advantage of SSDs over HDDs is that they performance much higher than “classic” hard drives. The fact is that SSDs use a completely different technology for recording, storing and reading information. The technology is borrowed from flash memory, so SSD can be called a specialized high-capacity flash drive.

The second advantage of SSD is no moving parts and details. It's no secret that magnetic hard drives are very sensitive to vibration loads, especially in operating condition. An accidental fall and you can say goodbye to the HDD forever. It is also not uncommon for the drive that spins those same magnetic “pancakes” to stop standing. Mechanical parts are the Achilles heel of any high-tech device.

Since SSDs simply have no moving parts or parts, their resistance to vibration and shock is much higher than that of conventional HDDs.

The third and important quality of SSDs for portable equipment is their light weight. If you put a 2.5” SSD with a capacity of, for example, 128Gb on one palm, and a 2.5” HDD with 180Gb on the other palm, then the solid state drive will seem like just “fluff” to you. They are incredibly light.

The fourth advantage of SSDs over HDDs is that they consume less energy, and their operating temperature is much lower.

These are, perhaps, all the qualitative differences between SSD and HDD.

SSD drive device.

This is what an average SSD looks like. Naturally, models in open-frame versions are available for sale. The most common SSD drives are the 2.5" form factor.

A typical solid state drive is printed circuit board with a set of chips installed on it. This set consists of a microcircuit NAND controller and, in fact, microcircuits NAND memory.

The printed circuit board area of ​​the solid-state drive is fully utilized. Most of it is occupied by NAND memory chips.

As you can see, there are no mechanical parts or disks in an SSD drive - only microcircuits. It's not for nothing that Lately SSDs are increasingly called “electronic” disks.

Types of memory in SSD.

Now that we have understood the design of SSD drives, let's talk about them in more detail. As already mentioned, an ordinary SSD consists of two interconnected parts: memory and controller.

Let's start with memory.

To store information, SSDs use NAND memory, which consists of a huge number of MOSFET transistors with a floating gate. They are also called cells (memory). Cells are combined into 4 kB pages (4096 bytes), then into blocks of 128 pages, and then into an array of 1024 blocks. One array has a capacity of 512 MB and is controlled by a separate controller. This multi-level drive design model imposes certain restrictions on its operation. For example, information can only be erased in blocks of 512 kBytes, and recording is possible only in blocks of 4 kBytes. All this leads to the fact that a special controller controls the recording and reading of information from memory chips.

It is worth noting here that a lot depends on the type of controller: read and write speed, resistance to failures, reliability. We'll talk about what controllers are used in SSDs a little later.

SSDs use three main types of NAND memory: SLC, MLC and TLC. In memory type SLC (Single-Level Cell) single-level transistors are used. This means that one transistor can store 0 or 1. In short, such a transistor can only store 1 bit of information. It won't be enough, won't it?

Here big-headed men “scratched their turnips” and figured out how to make a 4-level transistor cell. Each level represents 2 bits of information. That is, one of four combinations of 0 and 1 can be written on one transistor, namely: 00 , 01 , 10 , 11 . That is, 4 combinations, versus 2 for SLC. Twice as much as SLC cells! And they called them multi-level cells - MLC (Multi-Level Cell).

Thus, on the same number of transistors (cells) it is possible to record 2 times more information than if SLC cells were used. This significantly reduces the cost of the final product.

But MLC cells have significant disadvantages. The lifespan of such cells is shorter than that of SLC and averages 100,000 cycles. For SLC cells this parameter is 1,000,000 cycles. It is also worth noting that MLC cells have longer read and write times, which reduces the performance of the solid-state drive.

Since technologies for storing information on solid-state media are developing very quickly, it is possible that everything you learned about here is already considered obsolete.

For example, when this article was still being written, SSD drives made using MLC technology were leading the sales. But now they have almost been replaced by SSD drives with memory like TLC– three-level cells ( Triple-Level Cell). TLC memory has 8 levels, and, therefore, each cell can store 3 bits of information (000, 001, 011, 111, 110, 100, 101, 010).

Comparison table of flash memory types: SLC, MLC and TLC.

The table shows that the more levels are used in a cell, the slower the memory based on it works. TLC memory is clearly inferior, both in speed and in “lifetime” - rewrite cycles.

Yes, by the way, USB flash drives have long been using TLC memory, which, although it wears out faster, is also much cheaper. That is why the cost of USB flash drives and memory cards is steadily decreasing.

Despite the fact that SSD drives are produced by various companies under their own brand, many people buy NAND memory from a small number of manufacturers.

NAND memory manufacturers:

Intel/Micron;

• Toshiba/SanDisk;

  Samsung.

Thus, we learned that SSD drives come with three different types Memory: SLC, MLC and TLC. Memory based on SLC cells is faster and more durable, but expensive. Memory based on MLC cells is noticeably cheaper, but has a lower resource and performance. Only SSD drives based on MLC and TLC flash memory can be found on general sale (at the time of editing the article). Disks with SLC memory are almost never found.

3D XPoint memory and Intel Optane storage.

It is also worth noting that drives based on a new type of non-volatile memory have recently appeared on sale. 3D XPoint(read as "three di cross point"). Based on 3D XPoint, Intel produces solid-state drives under the brand Intel Optane. The development of a new type of memory was carried out by two Intel and Micron.

3D XPoint is a fundamentally new type of non-volatile memory, unlike NAND memory, which has been known since 1989.

3D XPoint has faster read-write speeds since the cell is accessed directly. As stated, the 3D XPoint memory has no transistors at all, and each cell is capable of storing 1 bit of information. Thanks to direct access, there is no need for complex controllers, which are simply necessary in NAND drives with multi-level transistors (MLC, TLC). In addition, the resource (wear resistance) of this memory is much higher than that of NAND, which has such a basic defect as electron leakage from cells.

Because the performance of Intel Optane drives exceeds SATA interface, then they are usually produced in form factors M.2, as well as in the form of a solid-state drive for the PCI Express slot (PCI-E AIC ( add-in card)). A new interface is used to work with such drives NVMe, which replaces SATA.

SSD drive controllers.

At the time of writing, the following controllers were most widely used:

About installing Windows on an SSD.

It is not recommended to install Windows XP on an SSD, since this operating system is not designed to work with SSDs. In Windows 7, 8 and 10, SSD support is fully present. True, for a more durable and “correct” SSD operation With Windows system 7, it is recommended to check/adjust some parameters of this OS.

Hello admin! Want to buy HDD with a capacity of 1-2 TB, one computer geek friend advised me to buy an SSHD disk (hybrid hard drive and SSD solid state drive), as it works noticeably faster than a regular HDD, but is not as expensive as an SSD solid state drive. What can you say about such discs?

Hello friends! Very good question. Yes, the SSHD (Solid State Hybrid Drive) hybrid hard drive is 30% faster than a conventional hard drive, and about the same amount more expensive. If a regular 1 TB hard drive costs 4,000 rubles, then an SSHD can be bought for 5,400 rubles. The following discs are available for regular computers, and for laptops.

Firstly, What is a hybrid hard drive?

Production technology hard drives(the only computer component that has moving mechanical parts) has long reached a dead end and it is almost impossible to increase the performance of a hard drive through production, as evidenced by the appearance of SSDs and SSHD hybrid hard drives on the market. But if a solid-state drive is a completely non-mechanical storage device based on memory chips, then a hybrid hard drive is, first of all, a regular hard drive with an MLC fast flash memory card (8 GB capacity) soldered onto it, used in the production of solid-state drives. that is, it turns out that SSHD is a hybrid of a regular hard drive and an SSD..

Secondly, why is an SSHD hybrid hard drive faster than a regular hard drive?

Seagate SSHD hybrid drives use self-learning technology - Seagate Adaptive Memory, which examines the operating system installed on the disk from the first seconds of operation, as a result, the most frequently used programs and files are copied to the flash memory of the SSHD disk, such files include, first of all, the elements involved in loading the operating system, which means that Windows will be installed from the second or third time boot faster, because Windows will be loaded from flash memory. For example, on my computer Windows boot 8.1 installed on a regular HDD occurs within 35-40 seconds, on an SSHD - 20 seconds, on a regular SSD - 15 seconds. The same applies to applications you constantly use; they will launch a little faster. Let’s take, for example, a modern game that requires computer resources and that you constantly play; according to my observations, such a game will load three times faster than on a regular HDD.

Hybrid SSHD hard drive is the golden mean

In general, the ideal configuration of drives in the system unit of an ordinary home user looks like this: buy two drives, the first is an SSD (volume 120-240 GB) for installing the operating system, and the second is a regular HDD for storing files (capacity) 2-3 TB , you need about 10,000 rubles for all this. And if you purchase one 1 TB SSHD hybrid drive, it will cost you 5,400 rubles, and a 2 TB SSHD will cost you 7,000 rubles. Of course, everything won’t fly (as is the case with an SSD), but maybe you don’t need such speeds. A hybrid SSHD drive is coming out, this is the golden mean - for little money you get good performance and large volume disk space.

Which SSHD to buy

Until recently, SSHD hybrid drives were produced by the company that developed them - Seagate. In total, there are now three Seagate Desktop SSHD models on the market with capacities of 1, 2, 4 TB.

Seagate Desktop SSHD ST1000DX001 1 TB

Seagate Desktop SSHD ST2000DX001 2 TB

Seagate Desktop SSHD ST4000DX001 4 TB

Also, recently Western Digital began to produce SSHD, but they are few on the market, and the model that I came across - WD Blue SSHD, WD40E31X with a capacity of 4 TB, was no different in speed characteristics from the similar model Seagate ST4000DX001 4 TB.

In today’s article, I suggest you consider the Seagate Desktop SSHD ST2000DX001 2 TB model and here’s why. If we take the Seagate Desktop SSHD 1 TB model, then 1 TB of disk space is no longer enough for a modern computer user. If we take the Seagate Desktop SSHD 4 TB model, then on the contrary, not everyone needs a large volume of 4 TB of disk space, and its price is quite high (11,500 rubles), and what is also important is the spindle speed of this drive: 5900 rpm, that is, it is slightly slower than other SSHDs with a capacity of 1 and 2 TB (spindle speed 7200 rpm) and this will certainly affect the performance of the operating system.

So, I persuaded you and we have a model in front of us Seagate Desktop SSHD ST2000DX001 2 TB

Upon closer inspection, the Seagate Desktop SSHD ST2000DX001 2 TB hybrid drive turned out to be an ordinary hard drive, only it says SSHD on it.

Disk space - 2 TB

SSD buffer capacity - 8 GB

Cache memory size - 64 MB

Spindle speed - 7200 rpm

On back side drive we see a special Adaptive Memory printed circuit board, with 8 GB of fast MLC memory and a “hybrid” controller soldered.

It’s very easy to install the drive into the system unit.

SMART hard drive CrystalDiskInfo program and Victoria.

The hybrid drive is new and has been used for 0 hours.

Read and write tests

To make sure that our disk is really good, let's perform several tests on reading and writing using special programs: CrystalDiskMark 2.0, ATTO Disk Benchmark and SiSoftware Sandra. These utilities will sequentially read and write information to our hybrid disk in small blocks, then show us the result.

CrystalDiskMark 2.0

The simplest and most frequently used program in this regard, you can download it on my Yandex.Disk

The utility is very simple, select only the desired drive letter (in our case E:)

And press AII, the SSHD disk performance test will begin.

1. Test of sequential reading and writing of large blocks of data;

2. Test of random reading and writing in 512 KB blocks;

3. Test of random reading and writing in 4 KB blocks;

I can say that the result is very worthy, especially the recording in 512 KB and 4 KB blocks.

ATTO Disk Benchmark

Let's test the hybrid disk with another program - ATTO Disk Benchmark.

Select the drive letter of the SSHD hybrid drive and click Start.

Result.

SiSoftware Sandra

A global program capable of diagnosing all computer components and having its own official rating.

As a result, our disk is ahead of 94% of the results. Excellent performance.

Disadvantages of SSHD

In my opinion, the only disadvantage of the SSHD is the small amount of built-in flash memory 8 GB, it would be great if its size increased to 32 GB, then more running programs would be placed in the solid state cache and the performance of Windows would be exactly the same as if it was installed on the SSD.

The abbreviation SSD stands for Solid State Disk. This name is used to refer to a new generation of computer storage devices. Although, since there are no disks inside them, it is more correct to use the name solid-state drive or solid-state hard drive. Unlike conventional hard drives, they use semiconductors to store information. The same method is used in USB devices or memory cards of digital cameras.

To better understand new technology, let's try to understand how a regular hard drive works. Inside a hard drive are a series of disks that use magnetic fields to input information. Data is accessed using read and write heads, and access speed is achieved by rotating the disks.

This mode of operation has several disadvantages:

Read/Write access time. The discs rotate continuously while the heads move at an angle. This is required to access information at the same speed. The time to access information depends on its distance from the reading heads.

Of course, at first glance this may not seem like a problem, but in reality it is far from the case. If the file is not stored on the disk in contiguous sectors, the head will have to make several jumps to read the information. Therefore, for normal performance of conventional hard drives, from time to time you need to perform defragmentation, which simply places the data in adjacent sectors.

Reliability. Since read/write operations require the hard drive to constantly move, they are very vulnerable. Hard drives of older modifications even stopped, i.e. if in this moment the hard drive is not in use, it was stopped to prevent damage to the drives. Now this is not required, but problems associated with shock and vibration still remain.

Solid state drives solve many of these problems, at least they don't have any moving parts inside.

The solid-state drive has two memory areas, one to retain all information even if power is lost and another, much smaller one, that acts as a cache to speed up access. The last area is very similar to RAM memory.

This entire system is controlled by a controller that coordinates the various elements. There are actually multiple blocks of memory that act like a miniature RAID. This allows you to increase the speed of multiple read and write operations and at the same time, make the device more resistant to crashes.

What are the advantages of an SSD hard drive?

Advantages of a solid state drive over:

Rapidity. Both in searching for data and in subsequently reading it. The speed of reading data on the entire disk is the same. No need for defragmentation.

Increased stability. Because a solid-state hard drive has no moving components, it is more resistant to shock and vibration.

Reduced power consumption. SSDs require less power to operate. Which is quite important for portable devices. Reducing power consumption reduces thermal wear and thus increases battery life.

Low noise level. A clear advantage of solid-state hard drives, which have no moving parts, is the absence of noise.

This allows the use of hybrid configurations with an SSD hard drive, which will act as the cache of a regular hard drive. This principle is called SSD caching, an example can be found at motherboards With Intel chipset Z68.

There are other implementations, such as Apple's Fusion technology, in which the operating system itself decides where to place files on a regular hard drive or SSD. With this method, unlike a hybrid configuration, disk size is not lost.

Problems with solid state hard drives.

The manufacturing technology of traditional hard drives has been used for decades, which has made it possible to create very inexpensive devices. SSD solid-state drives solve many problems, but have their drawback - high price.

But the high price is not the only problem with solid-state drives. SSD hard drives, due to their mode of operation, usually work faster at the beginning of use, and lose speed over time. This was a serious problem in the first generations of solid-state drives, and has remained less so in subsequent generations. A partial solution is to use a special one.

Types of solid state hard drives.

Types of solid state hard drives can be classified in several ways. Two are described here.

By connecting to a computer:

PCIe SSD. On a PCIe SSD drive, the block is connected to the PCI Express port as an additional internal map. This way they can work much faster and are not limited by the SATA standard.

SATA SSD. The same connector is used as a regular hard drive. Today, this is the only option for connecting a solid-state SSD to a laptop or other portable device.

According to the technology used in production:

In any computer, information is stored as a string of ones and zeros. Each of these elements is called a memory bit. Firstly solid state SSD each bit occupied one cell. With each new generation, manufacturers are trying to increase the number of bits per cell, which will reduce the price of the device for the same capacity.

But, unfortunately, it also has unpleasant side effects. Information in such repositories has a short life cycle, because there is electrical voltage in each cell. According to this classification, the following models exist:

SLC. Abbreviation for Single Level Cell. The very first solid state drives used. In them, each bit occupies its own cell. Due to its high price, it is now usually used on the server.

MLC. Abbreviation for Multi Level Cell. Here the cell already stores two bits. They can store four levels of charge.

TLC. Abbreviation for Triple Level Cel. This solid state drive has three bits per cell. They can store eight levels.

The worst thing is that the more bits are stored in one cell, the shorter the service life of the solid-state hard drive. That is, a TLC hard drive can most likely be thrown away after 3000-5000 rewrites.

Hello friends! As they said in Rus': “Every merchant praises his goods” and no matter how much you read various articles When it comes to SSDs, you are unlikely to find the same opinion. Some people read something and decided to buy a Samsung solid-state drive, some from Toshiba, while others decided to buy an OCZ Vertex or SSD at any cost. Kingston.

About a year and a half ago, my friends and I firmly decided to buy an SSD solid-state drive, but everyone has them, but we don’t. My friends asked me to test various SSDs and choose the best one.

Solid-state drives are not sold very well, so sellers of computer goods do not carry a lot of them, so as not to lie as dead weight in the warehouse. We also do the same, which is why I had at my disposal the best-selling SSDs at that time. The most inexpensive of the entire company was SSD Silicon Power V70, which I left the test for later.

I wasn’t particularly sophisticated in my tests; I installed an operating system on each SSD, then compared the SSD and a regular HDD in the CrystalDiskMark and AS SSD Benchmark test programs. Specifically prove that SSD is better I didn't need a regular HDD. Windows installed on an SSD loaded in 4 seconds; the test programs CrystalDiskMark and AS SSD Benchmark showed the complete superiority of the SSD over a regular HDD by 3-4 and even 5 times.

I carried out all the tests on the sales floor and the information was available to customers, in short, all the test SSDs were disassembled, besides, that day was good for sales and there wasn’t even a single SSD left on the display case, well, I think I was left without a solid-state drive! And then I remembered about SSD Silicon Power - V70. In principle, I knew this good manufacturer from Taiwan, but I still wanted something else, for example Crucial or Plextor!

I also decided to test it at the end of the working day and after the tests I was a little surprised, the V70 turned out to be a great solid-state drive, in no way inferior to other SSDs I tested and sold that day. And the SiSoftware Sandra program generally awarded him first place.

Over the course of a year, it didn’t work for me anywhere: both on a laptop and on different desktops system units and instead of a flash drive, I carried it in my pocket and dropped it on the floor, but nothing, it still works fine.

Well, okay, enough chatter, I’ll move on to the most important part of the article, the answers to your questions about the solid-state drive, and at the end of the article I’ll give some tests that prove that an SSD for installing an operating system is just what the doctor ordered.

ALL your questions regarding SSDs.

1. What is the internal structure of an SSD? Which NAND flash memory should I buy an SSD based on: SLC, MLC or TLC?

2. Which SSD manufacturer should you prefer?

3. Is the lifespan of an SSD really limited? After how many years of use will my SSD fail?

4. Is the user at risk of losing all recorded data if the resource of the memory chips is exceeded?

5. To extend the life of an SSD, is it worth disabling hibernation, paging file, recovery, disk indexing service, disk defragmentation, Prefetch technology, and moving the cache? browser and a directory of temporary files on another hard drive, and so on?

6. To what extent faster SSD a regular hard drive?

Comparing different SSDs in terms of performance

It is important to know not only the average sequential read and write speed on an SSD, but also what is hushed up by all SSD manufacturers - the random write speed in blocks of 512 kB and 4 kB! Disk activity for most users occurs mainly in such areas!

When comparing SSDs from different manufacturers in the AS SSD Benchmark program, we can see the following result, for example:

My SSD Silicon Power V70 showed:

Sequential read and write speed 431 MB/s (read), 124 MB/s (write)

The speed of reading and writing in 4 KB blocks turned out to be 16 MB/s (read), 61 MB/s (write)

SSD from another manufacturer. As you can see, there is a high (higher than my SSD) sequential read and write speed of 484 MB/s (read), 299 MB/s (write), but there is a drop in reading/writing in 4 KB blocks, namely 17 MB/s (read), 53 MB/s (write).This means this SSD is not faster than mine, although the box of this SSD may show the numbers 500 MB/s.

SSD test in SiSoftware Sandra program

My SSD ranked first among similar models