Hard disk drive

hard disk drive (HDD; also hard drivehard disk, or disk drive)[2] is a device for storing and retrieving digital information, primarily computer data. It consists of one or more rigid (hence “hard”) rapidly rotating discs (platters) coated with magnetic material, and withmagnetic heads arranged to write data to the surfaces and read it from them.

Hard drives are classified as non-volatilerandom accessdigitalmagneticdata storage devices. Introduced by IBM in 1956, hard disk drives have been the dominant device forsecondary storage of data in general purpose computers since the early 1960s.[3] They have maintained this position because of advances which have resulted in increased recording capacity, reliability, and speed, as well as decreased cost, allowing them to keep pace with ever more demanding requirements for secondary storage

Computer hardware: the basics

Business benefits of new computer hardware

Before purchasing computer hardware, you should consider what benefits it might bring to your business. This might affect what type of hardware you choose. For example, new computer hardware could:

  • reduce costs by automating routine tasks
  • improve customer service or supplier relationships through more effective electronic communication
  • improve your business efficiency
  • extend your business offer – eg through an online shop, support facility or download centre

Once you have listed the key hardware investments you could make, look at the cost/benefit relationship. This will help you to prioritise them and see which you can afford now, and which can wait.

However, while investing in computer hardware can bring benefits to your business, you should make sure that any hardware you do choose is compatible and worth the investment. For more information, see the page in this guide on buying new computer hardware for your business.