DIFFERENT TYPE OF HARD DRIVES

DIFFERENT TYPES OF HARD DRIVES

WHAT IS HARD DRIVE?

TYPES

A hard disk drive (HDD), hard disk, hard drive, or fixed disk is an electro-mechanical data storage device that stores and retrieves digital data using magnetic storage and one or more rigid rapidly rotating platters coated with magnetic material.

• PATA or Parallel Advanced Technology Attachment
• SERIAL ATA
• SCSI OR SMALL COMPUTER SYSTEM INTERFACE
• SSD OR SOLID-STATE DRIVES

PATA

refers to the type of interface used to connect the hard drive to the computer. The used 40 or 80 wire ribbon cables and can transfer data in 16 bit pockets simultaneously in parallel. The system of the PATA drives will also be the base science for the more modern drives.

SERIAL ATA

SATA hard drives have replaced PATA due to better performance. They transfer data faster (150 up to 600 megabytes per second) opposed to PATA ( 133 megabytes per second), use less power (250mV opposed to 5V) and SATA cables are thinner and more flexible.

SSD OR SOLID-STATE DRIVES

SSD or Solid-state Drives One of the latest types of hard drives that do not consist of moving parts. This makes them less susceptible to damage. They make use of flash memory chips instead to store data and provide faster data access. They are very common in laptops nowadays. SSDs are also used for mobile transfers. This also has general compatibility like the flash drive. An additional wire is used to make it compatible to other devices.

SCSI OR SMALL COMPUTER SYSTEM INTERFACE

SCSI or Small Computer System Interface allows for the connection of different peripheral devices such as hard drives, printers, scanners, CD-Drives and more. SCSI drives can also be connected internally and externally.

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