Main motto: keep calm If you ask a professional data saver like Lars M Mller of Recoverylab, then the affected people should first stay calm and not make wrong decisions. Especially in the case of strange noises, it is reasonable to think that this is a mechanical defect on the hard disk. However, the cause of this damage is not immediately obvious to laymen. For example, overvoltage, electrostatic discharge, material wear? Or the vibration of the internal or external data carrier may be caused by strange sounds. To avoid worrying about losing data, do not panic and frantically try to access the hard drive again. Instead, turn off the device and disconnect the power. M Bangle explained: ※ The new read and write access do more harm than good. Therefore, it is also not recommended to use the conventional recovery tools on the Internet. Don't worry about data loss In most cases, if you follow the prompts, you do n’t have to worry about files. ※ The data rescuer said that we can almost always save the apparently lost data§, and he also maintains the delivery point of the data carrier in Stuttgart. M Bangle and his team use special software, some of which is individually programmed to skip sensitive hard disk areas, thereby protecting components. Free tools on the Internet cannot do this. If necessary, replace the defective component and repair the defective hard drive. ※ After data recovery, we do not recommend that you further use the data carrier. M Bangller said another data loss is almost pre-programmed. Do you fix the hard drive yourself? People who want to restore photo memory, save their favorite music in MP3 form, or even save important files by themselves, usually only make things worse. "In the past few years, we have seen everything possible here," M Bang Lele explained. ※ Sometimes people use a traditional screwdriver to open the hard drive and damage sensitive components. However, in a professional data recovery laboratory, the conditions are different from the home. On the one hand, data rescuers use special tools, on the other hand, only open the data carrier in the so-called clean room. It can be ensured that even the smallest dust particles will not cause further damage to the HDD read / write head and the disk. Information: Hard drives are not the same hard drive HDDs with moving parts usually produce cracks, clicks, or other strange sounds. The acronym HDD stands for Hard Disk Drive. SSD hard drives (SSD = solid state drives) have no moving parts, but are composed of several flash memories. These are digital memory chips and are also used for USB memory sticks. Clicks and rattles are unusual here. If data loss occurs on the solid state drive, it should be attributed to logic errors, such as the drive being disconnected prematurely, the computer infected with a virus or accident, and sometimes deliberate data deletion. Prevent data loss In order to minimize damage in the worst case, data recovery experts recommend regularly backing up important files to a second external hard drive. On the other hand, it makes no sense to make a backup on a hard disk partition. "For portable devices, such as laptops or external SSDs / HDDs, temperature fluctuations must also be avoided," Lars M Bangller explained. In addition, you should occasionally turn off the computer to make the hard drive slightly quieter. Mueller: ※ Internal or external HDD / SSD for private use is not a permanent user. related articles: Choose the right location: network hard drives and cloud storage can be accessed from anywhere Do the job good? This is certainly tips on how to take care of your computer system Vital developments in energy-efficient digital drives Optical disk generate industry dimension, share, growth, traits 5 best external hard drives for data backup
Find out the type of hard drive Before purchasing a hard drive enclosure (also known as HDD), you must first check the hard drive type. Is it a 3.5-inch or 2.5-inch disk, does it have an IDE or SATA connector? 3.5-inch hard drives have long been the standard configuration for desktop computers, so they are still very popular. Even today, most mass storage devices with a storage capacity of 2 TB or more have a 3.5-inch format. On the other hand, 2.5-inch HDDs mainly appear in notebook computers, and are still often used in entry-level notebook computers. Smaller formats can also enter desktops through fast SSD storage, but are increasingly being replaced by modern M.2 SSDs. Because 2.5-inch drives consume less power, they do not require additional power when used in external cabinets. Compared to a 3.5-inch HDD that requires its own power supply, a USB cable is usually sufficient. Since 2003, Serial ATA connectors (SATA for short) have been used in all types of drives, including hard drives, DVD and BluRay drives. The two L-shaped connections form an interface between data and power, so that the power connection is longer. The IDE interface can only be found on very old hard drives before 2005. It consists of a long connection and pins arranged in parallel, with a gap in the next row, so the connection cable will not be inserted in the wrong way. The IDE hard drive is powered by a 4-pin Molex connector. Depending on whether your hard drive is 2.5 inches or 3.5 inches, and whether you have a SATA or IDE connection, you need a suitable enclosure. Although a 2.5-inch SATA hard disk drive is theoretically installed in the housing of a 3.5-inch hard disk drive, it cannot be fixed due to the lack of a small-sized holder. Therefore, it is best to use the correct enclosure only for the type of hard disk used. It should also be noted that 2.5-inch hard drives can have different heights. Many older 2.5-inch drives are 9.5 mm in height, while newer drives are usually only 7 mm in height. Choose the best connection Now that you have found the connection that the hard disk box must have, the problem now is that the hard disk box itself should be used to connect to the PC. The most common is the USB connection, but there are other alternative products, such as FireWire, Thunderbolt and eSATA. In most cases, USB is the best solution because it is good value for money. However, there are also significant differences in the performance of USB, which should be taken into consideration when purchasing an external case. Must distinguish between USB 2.0, USB 3.0 and the latest USB 3.1. The transfer speed difference between USB generations is sometimes very large. USB 2.0 can transfer data at a maximum speed of 480 megabits per second (Mbit / s), while USB 3.0 can transfer at a speed of no less than ten times the maximum speed of 4.8 Gigabit (Gbit / s) per second. In addition, USB 2.0 only supports hard drives up to 2 TB. However, when using USB 3.0, a larger capacity can be used. USB 3.1 is again more than twice as fast, and can reach data transfer rates of up to 10 Gbit / s. Especially if you want to install a fast SSD in the case, it is recommended to use at least USB 3.0 or even USB 3.1. It is not recommended to use a USB 2.0-connected enclosure because it is slower and is at most an option for older hard drives with low capacity. USB 3.0 cases are usually only a few euros more expensive. The choice of connector type connector shape is more of a priority issue. Those who choose USB 2.0 can choose between type B and mini-B connectors, of which type B is more likely to appear in a 3.5-inch housing, while mini-B type is particularly large due to its large size. In a small shell. When using USB 3.0 connection, it is necessary to distinguish between B-type connectors and microB-type connectors. Type B connectors look similar to USB 2.0 connectors, but have five additional contacts to achieve higher transfer rates. The USB 3.0 Type B port is backward compatible with USB 2.0 Type B cables. Recently, there are also hard disk drive boxes with USB Type-C connections. The elegant Type-C connector has very small advantages, but the transfer rate is higher and the current transmitted by the older USB type is larger. The plug is also reversible, which means there is no top or bottom, so it is always used for the first time. Select housing material The external hard drive housing is made of plastic or metal. Cheap plastic shells are lighter and therefore more suitable for take-out, but do not radiate heat like metal shells. Therefore, they are more suitable for short-time access, such as backing up and moving files. On the other hand, the metal casing is suitable for continuous operation, and sometimes even equipped with a small 3.5-inch fan, which can keep the temperature inside the hard drive low, thereby extending its service life. When buying a chassis, you should also pay attention to how the hard drive is installed. In some cases, the hard drive can be inserted without tools. Especially in the metal case, the driver must be fixed with screws. Usually, a Phillips screwdriver is sufficient. Installation Even before purchasing a hard drive enclosure, you should first test whether it is still working. For this, the hard disk status must be checked by the computer, so it may be necessary to temporarily install the hard disk in the PC. If the hard drive is in a PC, you can use multiple methods to test the integrity. 相關文章： Hard disk or flash memory-what can be saved faster? Purchase suggested hard drive: How much storage space do I need? What is a hard disk drive (HDD)? External hard drive is at risk of crashing Is there a problem with the hard drive? Reasons and measures you should know
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