HARD DISK

 

ü HARD DISK

Hard disk is a secondary storage device used to store large volumes of data. A hard disk drive (HDD) is a type of data storage device that uses spinning disks, or platters, to store and retrieve digital information. The data is stored on magnetic surfaces on the disk platters and is accessed by read/write heads that move above the platters, similar to the way a record player's needle reads a vinyl record.

 Hard disk drives are a common type of non-volatile storage, meaning that the data they store is retained even when the power is turned off. HDDs are widely used in desktop and laptop computers to store operating systems, applications, and personal data. They are also used in servers, storage systems, and other types of computer equipment.

 As of my knowledge cut off in 2021, the latest hard disk drives (HDDs) are typically based on helium-filled technology and use the SATA III or SAS interface for connectivity. Some of the latest HDDs offer higher capacities, faster data transfer rates, and improved energy efficiency compared to previous generations. One example of a current-generation HDD is the Western Digital Ultra Star DC HC620. This drive uses helium-sealed technology to provide increased storage density, improved performance, and reduced power consumption. It is designed for use in data centres and offers capacities up to 14 TB and a maximum sustained transfer rate of 260 MB/s.