Why can not be defraged with SSD. Is it possible to store large files on SSD? Is it possible to do defragmentation SSD

Perhaps the most important disadvantage is their limited service life.

In fact, the SSD drive is a variety of flash memory cells and each such cell has its own resource. Today there have already been drives with a resource in 100,000 cycles of rewriting and technology are not on the spot, but still the resource of SSD drives is limited.

In this article, I would like to reflect on the theme of solid-state drives, since this process involves moving parts of information from one section of the disk to another, which means it is logical to assume that defragmentation extensions the SSD drive, reducing its service life.

Is it necessary to defragmentation of SSD drives? Let's deal with.

So, modern operating systems and programs are not very prepared for working with SSD drives. If you analyze the work of the same Windows, we will find out that the operating system creates hundreds and thousands of temporary files during their work. For example, designed to reimburse the lack of RAM constantly increasing or decreased, and when exiting the operating system is cleared. Browsers (programs for watching online pages) constantly from the Internet, which allows to receive fast access To regularly visited Internet resources, but again loads the SSD drive. There are many such examples. Even the well-known Word when creating text document It produces auto storage, which already means an additional rewriting cycle on the information drive.

All these seems to be poured into tens of thousands of overwrite cycles every year, what you understand, it affects directly on the SSD drive resource.

In order for the wear of the SSD device cells is uniform, the device manufacturers are sewn into it. special programwhich, according to a specific algorithm, distributes cells to record or overwrite information. The task of this program to make wear cells uniform, that is, in each cell of the drive, the number of overwriting cycles must be approximately the same. The idea is not bad, but not working at 100%. If we look at the operating system or the program files that we installed on solid State Drive, I will find tens of gigabytes of non-rewriting files. After all, the main files of the operating system or programs do not change over time, and their volume is significant. The same can be said about your personal information. Once, throwing photo archives, favorite movies or music, you already hardly work with these files and they will be in the same SSD drive cells quite long time.

As a result, it turns out that there is some spaces of cells on the drive, which are constantly overwritten, and there are permanent cells that do not work. It follows the logical conclusion that the program sewn into the SSD drive and intended to increase its service life is ineffective.

Now about the essence, that is, the topic declared in the title title.

On the one hand, defragmentation on SSD drives is redundant, as the solid-state drives have a completely different principle of operation, rather than hard drives And fragmentation of files on the SSD drive does not affect the speed of its operation.

In this regard, in the Windows 7 operating system, the schedule defragmentation is even specially disabled so as not to load an additional SSD device, but is it harmful to defragmentation? Or is it necessary?

Perhaps in the form in which it is now, defragmentation is strong and will not help to increase the SSD-drive resource, since when defragmentation, there is a shuffle of file fragments that were written to the already fragmented disk. Nevertheless, one-time defragmentation will allow partially to move the fragments of the files and free the cells in which these fragments are stored for a long time. In the future, defragmentation will be used only areas of the SSD drive, in which constant rewriting cells occurs, that is, those areas in which temporary files are stored, which will only lead to greater wear of the cells.

I am confident that defragmentation programs will soon appear (or some other name will come up), which will move files on the SSD drive for uniform wear of all its cells. In the meantime, the owners of laptops with SSD drives will have to come to terms with the fact that part of its cells will fail much faster than the resource of others is exhausted.

We have already told you what SSD is and how to install it in a laptop or computer.

But besides all above, it is necessary to clarify one moment: Windows 7 itself is not too optimized to work with SSD.
It was developed and was created to work with conventional mechanical HDD. And some services and operations that Windows 7 produce not only do not speed up the system, and in additions, it also leads to incomprehensible "glitches" when working with SSD and its rapid wear.

In this article, we will tell you how to configure and optimize Windows 7 to work with SSD.

Before you start working with SSD strongly recommended Refresh firmware SSD. From the official site of the manufacturer. To subsequently avoid "glitches" in work.
Now almost all SSD you can update the firmware directly from under Windows along with the data. But it is better to do it for the safety net to do it on the "clean SSD", in order to avoid the loss of important information.
Instructions and methods of firmware your SSD are looking for only on official websites and manufacturers forums.

So. After installation necessary driversWe need to optimize the OS itself.
And specifically:
- Disable or transfer OS paging file;
- disable indexing and caching SSD;
- disable SSD defragmentation;
- Disable Prefetch and Superfetch;
- turn off the restoration of the system;
- disable hibernation;
- Checking whether Trim is enabled
- In SSD + HDD systems, you can transfer the Add folder.

Note: All these manipulations are not a panacea, and no one will give you a 100% warranty. Cases were seen when the performance of some SSD (mainly on the SandForce controller) decreased when the caching is disconnected.
As a result, everyone decides for himself, whether this optimization For his SSD.

And so, if you still firmly decided that you need optimization, then let's start settings:
First thing disable or carry the paging file.
It is used by the system for storing temporary data when the amount of RAM is lacking.
Frequent appeal, or rather recording / rewriting data on SSD, quickly flashes its cells.
It means optimally disable Podchock file if you have the volume of RAM more than 4GB .
If 4GB is less, then it should be transferred to HDD or increase the volume of RAM.

To disable the paging file you need on the icon A computer Click the right mouse button and go to Properties Systems

Then in the tab Extra options Systems / Advanced / Parameters / Advanced click Change

Remove the checkbox "automatically" and set "without paging file" and click Set

The system will rug, but we agree and after rebooting the computer.
If there is little RAM, then we can transfer the paging file by referring to which disk to reserve the location or set the minimum size as the system asks.

Also in systems where SSD and HDD are installed, you can transfer C SSD to HDD system folder TEMP in which Windows stores temporary files.
- Create a TEMP folder on HDD, for example on a Disk D (provided that D: - This is a section on the HDD), and we make it hidden to "not calling it" :)
- Right-click on the computer icon and select "Properties".
- In the opening window that opens, select the "Advanced System Parameters" item.
- On the Advanced tab, click the "Variables" button

The value "temp" and "TMP" change to D: \\ temp

Click "OK", then "Apply"

The next step turn off indexing and caching SSD.
Since SSD is a much embossed HDD, and the search speed of files, as well as much higher recording speed, then these SSD functions are not needed. In addition, we will improve the reliability of data recording during power supply interruptions. Disconnect these functions so that the data is not indexed in RAM and did not cache in the SSD buffer.
Note: For some SSD models based on SandForce controller, it is not recommended to disconnect exactly cachingSince it can significantly decrease the read / write speed of SSD (as well as the speed of the disk speed windows systems 7).

In the conductor, click the right mouse button on the disk from: and in the disk properties with: remove the checkbox "Allow index ..."
Apply only to the disk from:

Click the right key on our SSD and in the section Properties / Politics Disconnect file caching

The next step disable defragmentation SSD..
On SSD direct access to files and this happens very quickly and you do not need to defragment it.
This technology was designed for conventional HDD and, in the case of SSD, it only harms SSD cells.

Turn off defragmentation in the properties of our C:. Click the right mouse button on the disk from: and on the tab Properties / Service / Perform defragmentation Disconnect Defragmentation on schedule

You can also disable the defragmentation service in the section Management / Services But if SSD + HDD is installed in the system, then defragmentation for our conventional HDD will be unavailable. You can only stop the service in those systems where only SSD is used (for example, a laptop).

Next, turn off Prefetch and Superfetch..
These are the components of the OS, accelerating the process of its initial boot, as well as the reduction time of the program startup.
But since SSD and so "smartly", and the OS is loaded with it in seconds, we do not need them.

Prefetcher - this is a component of the manager windows's memory 7, responsible for optimal loading of the operating system and frequently used programs. Preliminary sample is a choice and loading in rAM The data required to launch certain processes before these processes are running. This technologyWhen using SSD, only clogs the RAM unnecessary processes.

Superfetch (super-stop) performs all pre-sampling features, plus several additional features. The advantage of super-stop is that it is deprived of one of the most important deficiencies in the preliminary sample technology. Pre-sample loads most of the files and data required to start the application or process to increase the speed of its start. But when other applications refer to memory, the pre-elected data is unloaded on hDD, in the paging file. And when this data is required again, the system will load them back from the paging file to memory, which is not desirable, in order to avoid frequent rewriting of SSD cells

You can disable these components in the Windows registry. To open the registry, press the Win + R buttons simultaneously (button WIN. ) the window should appear Perform ...

And enter the command Regedit.

Opens windows registry. We go along the way HKEY_LOCAL_MACHINE \\ SYSTEM \\ CURRENTCONTROLSET \\ CONTROL \\ SESSION MANAGER \\ MEMORY MANAGEMENT \\ PREFETCHPARAMETERS and in parameters (twice click by parameter) EnablePrefetcher. and EnablesUPERFETCH We change the values \u200b\u200bto zero "0". We maintain changes

Also disconnect System Restore.
Although this is a controversial question, you need or not. But we will turn off to limit the record information on our SSD.
For me, personally, it is better to restore the system from the backup image Acronis True. Image than to search for control points of the system failure.

Disable recovery can be in Computer Properties / System Protection / Customize

From the moment of the emergence in the Solid State Drive - SSD (SSD) has already passed quite a long time. Prices for this product are systematically reduced, making it more and more affordable, and now the 120 GB drive will cost about 4 thousand rubles. In fact, if you want to make the upgrade of your PC now, the purchase of SSD will become one of the most effective results as the ratio of options. You will not have to throw out an existing hard disk (it will only partially change its function, becoming the storage of media and other heavy files), and the performance of the computer in almost all modes of work will increase significantly.

Users not particularly interested in the world of iron may not quite clearly understand the fundamental difference of SSD from the usual magnetic hard disk HDD, and often the novelty is seen as the same HDD, only faster, less, lighter and more expensive. It is the misunderstanding of fundamental differences in the work of HDD and SSD can lead to incorrect use of SSD, which in particularly severe cases will reduce all its advantages to zero. Yes, a solid-state drive must be properly used, but you should not be afraid - from the user does not require some painstaking daily deep technical actions. Rather, it is necessary to simply not do a few simple things, and today we represent a list of "not" for anyone who decided to screw their workhorse with SSD.

Tekhnarey, who looked around here, we ask to take into account the fact that if you know all this, you probably know the fact that there are other people who may not know. Replace the usual "Thank you Cap" to your additional advice, together we will make the Internet more useful.

Do not defragment

No need to defragment SSD. If in old windows With FAT32, you are inertia and carried out defragmentation (although the same NTFS feels great and without it), then with the acquisition of SSD about defragmentation (SSD itself) and you need to forget at all.

SSD has a limited number of recording cycles (as a rule, the cheaper disk, the smaller it has a resource), and such a shocking of its contents will definitely do not benefit the period of work. Yes, the latest SSD models have a very large supply of recording cycles, and you are unlikely to reach the limit when the disc will stop working correctly, even with a frequent record, but then it's rather that defragment is meaningless for SSD.

The HDD uses mechanical details. Head, reading data, wanders there and here on the surface magnetic Disc. Accordingly, the more the specific data on the disk is scattered, the more it needs movements and time to fully read these data. In SSD, nothing is moving, and access to any memory cell is carried out equally quickly and does not depend on the mutual location of this data.

Do not format

We are accustomed to the fact that for the full and final deletion of data from HDD must be used. additional means: formatting, special utilities Like DBAN or Wiper Tool, which is part of CCleaner. This is done so that the cunning attacker cannot restore the data from the disk with the help of the utility like Recuva.

In the case of SSD, everything is different. The point is not even in the drive itself, but in the operating system. If you use a more or less relevant OS (Windows 7+, Mac OS X 10.6.8+, Linux with Linux Kernel 2.6.28+), then the final deletion of data from the disk system takes on itself, and makes automatically using the Trim function.

Trim realizes the opportunity for OS "inform" a solid-state drive that the file is completely removed and it is necessary to clean the sector-employed sector. Some of the first SSD models did not support Trim, but it was so long ago (and these SSD were so expensive) that the probability of hitting such a storage model seeks zero.

Do not use Windows XP and Windows Vista

New toy - a new axis! And the point here is not at all in novelty. Just XP and Vista do not support Trim. In the previous paragraph, we gave the concept of Trim, and now you need to explain how the absence of this function is affected by SSD. If there is no Trim, then after deleting the file, the data will still remain on the disk. As a result, when the information will be recorded again in the same sectors, you will first have to be cleaned, and then write data in them. Excessive late operations -\u003e reduced speed.

In modern operating systemsah Trim is enabled by default. Nothing needs to be done. Just leave everything as it is and rejoice SSD speeds.

Do not score to refusal

In order for SSD to work at full speed, it is necessary to maintain the amount of free space, equal to approximately 25%. Sounds a little dishonest: you buy an expensive SSD, in it and so little space, the system sees less space in it than what is written on the box, and here it is also asked to leave a quarter volume in reserve? Unfortunately yes. This feature sSD works, And while we do not have the best broadcast technologies. We will have to take the rules for the best speed.

From the point of view of internal processes, the drop in performance with a small amount of free space is explained like this: a lot of free space is a lot of free blocks. When writing a file, the data is written in free blocks. Little free space is a lot of partially filled blocks and few completely free blocks. When writing a file, the system will first have to consider a partially filled block to the cache, add new data to it, and then write a modified block back to the disk. And so for each block.

The limit of 25% is not taken from the ceiling. The guys from Anandtech came to such an indicator, conducted studies of the performance of SSD performance from its completion.

In fact, if you use SSD exactly where it is most of all, the need to leave a quarter place free will not be disturbed. Now we will just talk about what role SSD is most effective.

Do not use as storage

Purchase SSD for storing music and films on it is a bad idea. HDD speeds are enough to write comfortably and look with them and FullHD film, and listen to Losless music. SSD is needed where the speed of access and recording is most important.

SSD should be used as system Disk. On it should be an operating system, applications and, with acute necessity, modern games. Nothing more.

Upon understanding that the SSD ideally serves as a catalyst for the most demanding for the fast work of the computer's computer (the operation of the OS is the basis of everything and all, the fast work of important applications, the rapid reading of the data from the "body" of the game), the need to score it to failure at all disappears. SSD is a highlighted fast strip for the most important.

If you still want to use fast SSD. As a repository, simply consider the cost of rubles for gigabytes of memory for it and for HDD.

How to be if you bought a new tricky ultrabook, in which there is only SSD, and I want to write movies? Buy an outdoor hard drive with uSB interface 3.0 or ThunderBolt (provided that such a standard is supported by the beech himself).

We hope that this information It will help you to start using SSD by destination and most effectively.

Disk defragment - procedure for combining file fragments, which is mainly used for windows optimization. In almost any article to speed up the computer, you can meet the Council on Conducting Defragmentation.

But not all users understand what is defragmentation, and do not know, in what cases should it be done, and in what no; What software should be used - whether the built-in utility is enough, or it is better to install a third-party program.

By making disk defragmentation, many users do not even think or are trying to find out what it is at all. The answer can be found in the title: "Defragmentation" is a process that combines files that when writing to the hard disk were broken into fragments. In the image, it is clearly clearly seen that on the left fragments of one file are recorded by a solid stream, without empty places and separations, and on the right, the same file is scattered over a hard disk in the form of pieces.

Naturally, the disk is much more convenient and fired to read a solid file than separated by empty space and other files.

Why does HDD fragmentation occurs

Hard disks consist of sectors, each of which can store a certain amount of information. If a large-sized file is saved on the hard drive, which cannot be fit into one sector, then it is broken and saved in several sectors.

By default, the system always tries to record the file fragments as close as possible to each other - in the neighboring sectors. However, due to the deletion / save other files, changes in the size of already saved files and other processes do not always have enough free sectors located next to each other. Therefore, Windows transfers the file entry to other parts of HDD.

How fragmentation affects the speed of the drive

When you want to open a recorded fragmented file, the hard drive head will convege into the sectors where it has been saved. Thus, the more than more than once it will have to move around the hard disk in an attempt to find all the pieces of the file, the slower will be read.

On the bottom of the left it can be seen how many movements need to make the head of the hard drive to read the files broken into parts. On the right of both files designated by blue and yellow colors, are recorded continuously, which significantly reduces the number of movements along the disk surface.

Defragmentation is the process of permuting pieces of one file so that the total percentage of fragmentation decreases, and all files (if possible) were located in the adjacent sectors. Due to this, reading will occur continuously, which will have a positive effect on the speed of HDD. This is especially noticeable when reading the bulk files.

Does it make sense to use third-party programs for defragmentation

Developers created a large number of programs that are dealt with defragmentation. You can find both small defragentar programms, and meet them as part of the complex system optimizers. There are free and paid options. But are they needed?

The definite effectiveness of third-party utilities is undoubtedly present. Programs from different developers can offer:

• Own autodifragmentation settings. The user can more flexibly manage the schedule of procedure;
• Other process algorithms. The third-party software has its own characteristics, more profitable in the end. For example, they require less than percent of the HDD free space to run a defragmant. In parallel, file optimization is performed, which increases their download speed. There is also a combination of free space volume, in order to further the level of fragmentation raised more slowly;
• Additional features, for example, registry defragmentation.

Of course, the functions of the programs will differ depending on the developer, so the user needs to select a utility based on their needs and PC capabilities.

Does it be necessary to conduct constant disk defragmentation

All modern windows version Offer automatic carrying out this process on schedule once a week. In general, it is more useless than necessary. The fact is that fragmentation itself is the old procedure, and before it was really necessary. In the past, even light fragmentation has already adversely affected the performance of the system.

Modern HDDs have a higher speed, and new versions of operating systems have become much "smarter", therefore, even with a certain fragmentation process, the user may not notice a reduction in the speed of operation. And if the hard drive is used with a large volume (1 TB and higher), then the system can distribute heavy files optimal for it so that it will not affect performance.

In addition, the permanent launch of the defragentiary reduces the service life of the disk is an important minus that it is worth taken into account.

Since by default Windows Defragmentation Enabled, it must be turned off manually:

Does the SSD disk defragmentation need

Very common user error using solid-state drives - the use of any defragmant.

Remember, if you have a SSD disk on a computer or laptop, do not defragmenting - it strongly accelerates the wear of the drive. In addition, such a procedure will not increase the speed of the solid-state drive.

If you have not previously disabled defragmentation in Windows, then definitely do it either for all disks or SSD only.

IN third-party utilities This feature is also present, but the setting method will be different.

Features of defragmentation

There are several nuances for a qualitative implementation of this procedure:

• Despite the fact that defragmenters are able to work in the background, to achieve the best result, run them best in the absence of activity from the user, or with its minimum quantity (for example, in a break or when listening to music);
• When performing periodic defragmentation it is more correct to enjoy fast methods that accelerate access to basic files and documents, but the definite part of the files will not be processed. Full procedure in this case can be done less often;
• Before complete defragmentation, it is recommended to remove garbage files, and, if possible, to exclude files from processing page File.sys. and hiberfil.sys. These two files are used as temporary and re-create together with each start system;
• If the program has the ability to defragment a file table (MFT) and system files, it is not necessary to neglect her. As a rule, such a function is not available at the operating system running, and can be carried out after a reboot before the Windows start.

How to make defragmentation

There are two main ways to make defragmentation: installation of utilities from another developer or using the program built into the operating system. You can optimize not only built-in discs, but also external drivesconnected via USB.

You already have a defragmentation instructions on the example of Windows 7. In it you will find a guide to work with popular programs and a standard Windows utility.

1. Do not defragment a solid-state drive (SSD).
2. Disable the launch of defragmentation on schedule in Windows.
3. Do not abuse this process.
4. First make analysis and find out whether there is a need for defragmentation.
5. If possible, use high-quality programswhose efficiency is higher than the built-in Windows utility.

Greetings! In recent days, there has been a lot of defragmentation hard disks And about. Today we will touch the topic of defragmentation of SSD drives. Let's start.

If you read our previous articles, you already know, and. These knowledge will be useful to you to understand today's topic.

Do you need a defragment SSD to drive?

Answer - Defragmentation SSD does not need a drive!

Why? Look like HDD discs Reading information occurs mechanically. That is, the reading head of the Winchester moves throughout the diameter of the disk to find the desired file.. In this case, of course, it is necessary to facilitate the hard disk and group defragmented files in a convenient order. The files that system need more often are closer to the disk center. Conversely - rarely used files are taken away from the center, so as not to interfere with work with more important files.

As for SSD drives, there are no mechanical parts in them and you don't need to look for a long file for reading. reading from anywhereSSD drive occurs in a matter of milliseconds. That is why the need to defragment the SSD drive disappears by itself. In addition, she is also harmful to him.

Why is defragmenting harmful to SSD drive?

As you already know, important distinctive feature SSD drive from ordinary hard drive is the limited recording cycles. That is, they cannot be overwritten forever. Although nothing is forever and besides, the stock of these "limited overwriting cycles" SSD is very large. However, during defragmentation there are many overwriting and displacements of files and file fragments. And this, as you understand, significantly reduces the life of the SSD drive.

How to disable the automatic defragmentation of the SSD drive?

Of all that you learned today, you may have a question " Isn't I included automatic SSD defragmentation? And how to turn it off?" I hurry to calm you. If you are using Windows 7 or higher, the system itself turns off automatic defragmentation, as soon as the SSD drive is on board. Therefore, nothing to worry about.

As for Windows XP or Vista, the use of SSD drives with such versions of operating systems is urgently not recommended. They are completely incompatible. This leads to a very rapid wear of SSD drives.

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