In the 30 years since IBM introduced its personal computer, data and data storage devices have become an integral part of people's lives. It seems almost unbelievable that in the 1980s, few people owned themselves at home. Computer. In 2009, the National Bureau of Statistics reported that the home computer ownership rate in the UK was 75%, and the home computer ownership rate in the highest income group rose to 98%. Data and its secure storage have become an increasingly important priority in people's lives, and the technology industry is meeting this need by creating higher storage capacity in personal computers and external hard drives [EHD].
EHD offers users many advantages; they can protect users' data by providing backup functions for the host computer, they are useful for storing and archiving large multimedia files, and the increasingly popular compact portable version is especially useful for data transfer. However, for all these advantages, we need to be careful with these disks. EHD is the most common of all devices sent to data recovery companies. There are two main reasons for this:
EHDs are susceptible to human clumsiness. Desktop EHDs may be splashed with liquid or accidentally flipped or towed to the floor by trailing data or power cords. Portable EHDs are typically placed in trouser pockets or bags that may be sitting or otherwise damaged during shipping.
2. In order to keep the EHD compact as much as possible, manufacturers often omit cooling fans, which are always present in PC or laptop hard drives. Therefore, EHD is at risk of overheating, which may have an impact on the stability of the data stored on the disk.
So how do we know when and why our EHD failed? More importantly, what can we do? Well, in addition to the drive spinning and then dying or not being recognized in the BIOS, there are various corrupted EHD noises that can be generated, including screams, hum, buzz, hum, percussion and buzzing. We will examine some of these symptoms in more detail and describe their root causes:
* Beep, hum and scream: Many manufacturers use fluid dynamic bearing [FDB] technology over ball bearings because the disk runs quieter and has better impact resistance. However, our research shows that when a disk is driven by cooling, it takes time for the fluid to reach its optimum viscosity and is susceptible to vertical vibration during this period. This can result in read/write errors and the resulting beeps or clicks.
* Beep: The EHD contains a spindle that is responsible for rotating the disc. Only a small portion of the spindle is in contact with the relatively heavy portion of the drive, and sudden tapping or shaking of the EHD may cause the spindle to become stuck and the computer will not recognize the drive.
* Ticking or Knocking: Inside the EHD there is an arm with a read/write head that, as its name implies, can read or write data from the disc. If the head or motor is damaged, the arm may hit other components in the disk as it will constantly try to read the data, which will produce a regular click. According to our experience, this is usually caused by EHD being discarded or knocked down.
* Slow driving and sudden death: This may be accompanied by noise [such as repeated scratches] and overheating due to lack of ventilation around the disk.
Therefore, there are a number of issues that may reduce EHD and prevent these issues by taking care of the disk; however, the disaster should be a key recommendation from the data recovery industry to shut down the disk immediately, rather than risking running a repair tool, which may be further Impair access to stored data. Reputable data recovery companies use specialized equipment and clean room laboratory conditions to retrieve valuable data. Their expertise and experience are reflected in the prices they charge; unfortunately, there are many companies, usually those in the low-end market, who greatly exaggerate their abilities. Before entrusting them with key documents, it is recommended that potential customers carefully study the reputation and skills of the data recovery company.
Orignal From: Data Recovery for External Hard Drive - Symptoms and Solutions
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