What is Hard Disk Drive and Hard Disk Drive Data Recovery
Information of hard disk drive-A hard disk drive (HDD) is a data storage device used for storing and retrieving digital information using rapidly rotating discs (platters) coated with magnetic material. An HDD retains its data even when powered off. Data is read in a random-access manner, meaning individual blocks of data can be stored or retrieved in any order rather than sequentially. An HDD consists of one or more rigid ("hard") rapidly rotating discs (platters) with magnetic heads arranged on a moving actuator arm to read and write data to the surfaces.
Introduced by IBM in 1956, HDDs became the dominant secondary storage device for general purpose computers by the early 1960s. Continuously improved, HDDs have maintained this position into the modern era of servers and personal computers. More than 200 companies have produced HDD units, though most current units are manufactured by Seagate, Toshiba and Western Digital. Worldwide revenues for HDDs shipments are expected to reach $33 billion in 2013, a decrease of about 12% from $37.8 billion in 2012.
The primary characteristics of an HDD are its capacity and performance. Capacity is specified in unit prefixes corresponding to powers of 1000: a 1-terabyte (TB) drive has a capacity of 1,000 gigabytes (GB; where 1 gigabyte = 1 billion bytes). Typically, some of an HDD's capacity is unavailable to the user because it is used by the file system and the computer operating system, and possibly inbuilt redundancy for error correction and recovery. Performance is specified by the time to move the heads to a file (Average Access Time) plus the time it takes for the file to move under its head (average latency, a function of the physical rotational speed in revolutions per minute) and the speed at which the file is transmitted (data rate).
The two most common form factors for modern HDDs are 3.5-inch in desktop computers and 2.5-inch in laptops. HDDs are connected to systems by standard interface cables such as SATA (Serial ATA), USB or SAS (Serial attached SCSI) cables.
Data Loss on Hard Disk Drive and Solution of Data Recovery
There are several common causes of data loss in computer hard drive and even storage device. At times it’s frustrating when you lose your precious data like photos, music, or other files. The main causes are listed as follow.
●Virus attacks (Sometimes when your computer is infected with virus and you connect your storage device with it, your files which were stored on your device may be lost.)
●Accidentally deleted files
●Lost or forgotten passwords (on password-protected or “locked” areas of the drive)
●Damaged caused by extreme heat/cold
●Fire, water, or other physical damage
To recover lost data from hard disk drive, you can have a try to use some data recovery tools. Here we suggest you to have a try on uFlysoft Data Recovery for Mac to achieve lost data recovery with ease. Only 3 steps, few clicks, then you will get back all of the lost data in a few minutes.
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Need to recover missing image files on your Windows OS computer? uFlysoft studio also offers you a good tool-uFlysoft Photo Recovery for Windows.
