Question

There are two main types of hard drives available to a computer. State what they are and describe their use

Answer 1

$\huge \mathfrak{Answer:-}$

There are two general types of har drives: hard disk drives (HDD), which use one or more rotating discs and rely on magnetic storage, and solid-state drives (SSD), which have no moving mechanical parts, but use flash memory like the kind found in USB flash drives!

Answer 2

There are two types of drives: HDD (hard disk drive) and SSD (solid-state drive).

HDD

HDDs are installed in most PCs and laptops. There are several aluminium plates inside the drive. Reading and writing operations are performed due to rotation of the plates and the sensing head located at a few nanometers. The speed of the plates can be as high as 15,000 revolutions per minute which results in the common noise during operation. These drives have become popular because they provide a lot of space (up to 4 TB on a single HDD), high reliability and stability during reading and writing operations.

HDD

Disadvantages of HDDs as compared to SSDs:

low speed of reading/writing operations

high power consumption

high noise level

HDDs are suitable for operations which do not involve frequent reading or writing of data: setting up data storages, backup systems, mail servers, video streams or servers for virtual machines.

SSD

SSDs use memory chips and since they do not have any rotating elements, they are completely silent, consume less power and are smaller than HDDs.

SSD

Reading and writing operations are performed faster in SSDs (files are opened, saved and deleted faster).

The relation of the data transfer rate to the size of the transmitted data block is defined by IOPS (Input/Output Operations Per Second). IOPS shows the number of blocks which can be read/ written per second. For reference, in HDDs this parameter is about 80-100 IOPS, while in SSDs it is more than 8,000 IOPS.

However, each rewriting cycle burns the drive out which shortens its service life.

SSDs are suitable for high-load projects with numerous reading and writing operations. SSDs increase the speed of a website developed on any modern CMS.

In order to connect a drive to a server, a drive interface is used