BT和迅雷真的伤硬盘吗？看了就知道了

BT和迅雷真的伤硬盘吗？看了就知道了 BT和迅雷真的伤硬盘吗,看了就知道了 [note] BT and xunlei really hurt hard drives? You'll see BT and xunlei don't hurt the hard drive, you know To quote someone, some people think that BT and xunlei hurt hard drives: Why does frequent reading and writing damage the hard disk? Head life is limited, so frequent, speaking, reading and writing will speed up the motor head arm and head wear, frequent, speaking, reading and writing disk will make the temperature more, a region that will affect the stability of magnetic medium can also lead to read/write error, high temperature will make the area expanding with heat and make closer to the head and dish (normally head and dish only a few microns, closer to still have?) , but also affects the data of a diaphragm head read sensitivity, can make the crystal oscillator clock frequency change, also can cause hard drive circuit component failure. Various tasks will also lead to premature failure IDE hard disk, the shortage of IDE hard disk itself, task request is too much can make seek failure rate rise, lead to head frequently reset (reset is to head back to zero The magnetic track, in order to retrace the path, accelerates the wear of the head and head motors. But that's actually not the case. Let me start with the modern hard drive Today's hard drives, both in the IDE and SCSI, use the "Winchester" technology, which features the following features: 1. Magnetic head, disc and movement mechanism seal. 2. The surface of the plated disc with fixed and high-speed rotation is smooth and smooth. 3. The head of the head moves in radial direction. 4. The head of the head is stopped by the disc, but it is not in direct contact with the disc at work. Disc: hard disk is the magnetic powder, adhere to the aluminum alloy (new material also useful glass) on the surface of the disk. The magnetic powder is divided into several concentric circles called tracks, in the track on each concentric circles like millions of arbitrary arrangement of small magnets, they represent the state of 0 s and 1 s. When these small magnets are affected by magnetic force from the magnetic head, the direction of their arrangement changes. The magnetic force of the head is used to control the direction of a small magnet, so that each small magnet can be used to store information. Disc body: hard disk body is composed of multiple discs, the disc overlap together in a sealed box, they are on the main shaft of the motor driven rotating at high speed, its turn every minute ran at 3600450 0540, 0720 or more. Head: the head of hard drives, used to read or modify the state of the platter of magnetic material, generally speaking, each magnetic surface will have a head, starting from the top, starting from 0. The head is in contact with the disk when it stops working, but is flying at work. Head to take in the landing area of the disc contact start-stop, landing zone does not store any data, start-stop head in this area, there is no damage to any data. When reading data, high-speed rotating plate, due to the head movement adopted a sophisticated aerodynamic design, the head is 0.2-0.5 micro disk data area of the self-righteous guy degrees of "flight". It does not cause wear and tear on the surface, but can also read data. Motor: the motor on the hard disk is a brushless motor, and the mechanical wear and tear is very small under the support of high speed bearing, it can work continuously for a long time. The spinning disc has a noticeable gyro effect, so the hard drive in the work is not suitable for movement, otherwise the shaft will be increased The workload of the load. Hard disk head seek servo motor used more voice coil type rotary or linear motion stepper motor, under the regulation of servo tracking precise tracking of track, so when hard work don't have impact, be careful when moving light. The principle is here, everybody understand? First, there will be no contact between the head and the data area, so there is no problem of wear. Secondly, a boot disk is rotating, the rotation of the spindle motor can be up to 4500 or 7200 revolutions per minute, and it doesn't matter whether you use FLASHGET or ED, as long as the electricity, they in turn. Their wear is also irrelevant to software. Again, seek under control of the motor head movement, is about moving back and forth, and was modest, from the innermost disc (land area) to start, slowly moved to the outermost layer, then slowly moving back, a track to another track to find data. There won't be any big jumps (not frogs). So its wear is also negligible. So where does the heat come from? The first is the rotation of the main shaft motor and the hunting motor, and the temperature of the hard disk is mainly due to this. Second, the friction between the spinning disk and the air. This is also the main factor. And the read and write of the hard drive? Unfortunately, its heat can be ignored!!!!!!!!! Hard drive read operations, is potentially the changes affect the head of the resistance value of the magnetic field, the process - not fever, head is because current change, so there will be a little heat is generated. The write operation? At the right moment, in turn, by the head of current intensity changes, affect the magnetic field on the disc, the process for using electromagnetic induction, so head calorific value is bigger. But the plate itself is not hot, because the permanent magnets on the plate are cold and not hot because of the change in the magnetic field. But overall, the heat of the head is dwarfed by the first two. Heat can be radiated by radiation, so high heat is not harmful to the permanent magnetic experience on the plate. The damage is small, and the temperature of the permanent magnet is far higher than the normal temperature of the hard drive. Of course, if your case doesn't heat up, you won't be able to blame others. I have to say something about someone: A. High temperature is the resistive sensitivity that affects the head of the head, so it is not related to the permanent magnet. 2. The so-called thermal expansion, not closing plate body and head of the distance, because the head is the air flight dynamics, under normal circumstances always keep a certain distance and disc. Of course, if you hit the hard drive hard, the vibration... 3. A "seek" means that a hard disk moves from the beginning to the designated track. The so-called reset action doesn't happen very often. Because the physical location of the track is stored in the CMOS, the hard drive does not need to move back to the 0 track to start again. As long as the head starts, the so-called reset action is done, and unless you restart the computer, it won't happen again. Four. The disk structure of the IDE hard disk and SCSI hard disk is similar. It's just that the interface bandwidth of the SCSI hard disk is larger than that of the contemporary IDE, and often SCSI CARDS tend to have something like a CPU that slows down the occupancy of the main CPU. That's all, so Seagate USES the technology for its SCSI hard drive on an IDE hard drive. Five. The read and write of the hard drive is in the sector of the cylinder. The cylinder is the same concentric magnetic path of all the magnetic surfaces in the entire disk, dividing each track into a number of regions known as sectors. Hard disk writes, is the first to write a full sectors, to write the same cylinder under a sector, before a cylinder completely full, the head will not move to the other track on. So the files stored on the hard disk, not like the average person thinks, is continuous in (from the user is together, but from the point of the underlying operating system, the deposit is not continuous). So FLASHGET or ED open up a lot of threads, and the headhunting of the head is usually no bigger than the one you play on the other side of the game. And, of course, this is just simply download or upload, but actually in the process, who can guarantee that he will not start the other software need to read and write the hard disk? Maybe a lot of people like to download and play games or listen to music? Not to mention that WINDOWS itself needs to read and write virtual memory files frequently. So, with FG download or ED, It won't be too bad for the hard drive. Six. What's more, the reason why FLASHGET is so multithreaded is bad and why is it hard for ED to read and write frequently. First, a more threads, CPU occupancy rate is high, form-feed movement is frequent, thus virtual memory read/write frequently, as for why, studied the principle of operating system should know that I'm not here. ED? Download a file from a few people at the same time, and several people are downloading your files at the same time, which is similar to FG's multithreading. So the hard drive lights flash. However, the current hard drive is cached, and the data is not immediately written to the hard disk, but stored in the cache first, then a certain amount Write the hard drive once again. I'm going to do well in FG, but I'm going to write it in cache. CPU intervention but this process is also needed, so set a time too short, CPU occupancy rate is high, so the hard disk light is still fierce of flash, because the virtual file in reading and writing. Seven. The hard disk reads and writes frequently, the head arm is in the drive of finding the servo motor to move frequently, but for the machine, this is not very much. Unless your hard drive itself has mechanical problems such as arm deformation (the most common failure of water). The actual loss is the head of the magnet, the changing current can cause it to age, but compared to its lifespan... It should be within a reasonable range. Unless because of the vibration, the head hits the disk. Eight. The most heavily affected are the mechanical circuits, especially those on the outside of the hard drive, which will accelerate the ageing process at high temperatures. So one of IBM's hard drives, though there is a bad way, but once you use some software, it's gone. Again, it's normal to change the circuit board. That's why. I'm so tired of typing so many words. In short, the hard drive can affect longevity because of bad environment and poor maintenance, but it is definitely not the software's fault. FLASHGET, ED, FTP, they to the hard disk read and write frequently, but not better than you usually play games, listening to music on the hard disk damage commonly big. Say more understand, they are the so-called loss of hard disk, in fact you can ignore don't remember. Don't cry because it is flash, hard disk light fierce blind worry there. Otherwise, those that provide WEB services and FTP server, their hard drives, can not play games usually, comparable software under the hard disk. The hard drive has a parameter called serial free time. It means that the hard disk runs from the beginning to the longest period of failure, the unit is hour, the English abbreviation is MTBF. The average hard disk MTBF is at least 30,000 or 40,000 hours. Depending on the parameters of the hard disk manufacturer. This is a continuous time of failure, so you can divide it by yourself and see how many years it is. Then you think about how long your hard drive is working for the longest time. Now I use the machine, has been on 1 year in a row, in addition to the midway several times off ten minutes to clean up dust, never stop (use gold turn 6 generation and 40 g). There are also three servers that use SCSI hard drives, which have not been stopped for two consecutive years, and the heat from the hard drive is more than the average IDE hard drive (a hard disk of 10,000 RPM). In this regard, I think I have a voice. Finally, add a few points: A. The hard drive is best not to buy water or repair goods. Gray in the transport process is very unsafe, although on the surface seems to be no damage, but may be due to various factors in the process of transportation cause damage to the machine. Not to mention the return cargo. To be honest, those who blame hard drives are prone to damage, and you should see if your hard drive is the same. 2. The hard drive environment needs to be clean, especially if you don't use your hard drive in a lot of power and dust. The case should be cleaned up every two months. 3. The machine of hard disk is most afraid of shock and high temperature. So the environment is better, especially the case of the case should be strong, so as not to be too big. Don't be wobbly at the computer desk. Four. Always pack the hard disk fragments. There's a misconception that most people think that hard disk fragments will increase their hard drive, but that's not true. Hard disk fragments in itself is only can let the hard disk read and write it takes less than more fragments of time, loss of hard disk is negligible (here I just said the fact that at present on the network server, they use most of the operating system is UNIX, but there is no disk defragmentation software under UNIX. Even Microsoft NT4, itself is not). However, because the head of the head moves frequently, it increases the read-write time, so the CPU Form-feed movement is frequent, and cause the virtual file here (in fact accurately in page file) to read and write is frequent, so as to increase the hard disk heads seek load. That's the downside of hard disk shards. Five. Avoid as far as possible when the hard disk read and write suddenly without electricity, cold start and do other increase CPU load (such as listening to music when playing games, or download large 3 d games), these damage to hard disk than the average person imagines. I didn't say anything for the reason. Anyway, as long as you're paying attention to the hard drive, the hard drive won't be as fast as we say BYEBYE. Of course, if it's the quality of the hard drive itself, then I have nothing to say