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This article will share with you about the reasons for installing another hard drive in your existing computer. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

There are two reasons to install another hard drive in an existing computer: 1, support the RAID array; 2, the storage system exchanges files. Hard disk drive is a main computer storage medium, which can increase storage space, improve the speed of hard disk drive, exchange files in storage system, improve fault tolerance and so on.

The operating environment of this tutorial: windows7 system, Dell G3 computer.

What are two reasons for installing another hard drive in an existing computer? (choose two. )

A. Support RAID array

B. Store BIOS configuration settings

C, storage system exchange files

D, improve CPU speed

E. allow access to the output of the secondary monitor

Reference answer: a C

Description:

Hard disk drive (Hard-Disk Drive) is a major computer storage medium, which consists of one or more aluminum or glass discs. Only through the hard drive can the computer store data.

The role of the hard drive:

1. Increase the storage space

2. Improve the speed of hard disk drive

3. Install another operating system

4. Storage system exchange files

5. Improve fault tolerance

6. Back up the original hard drive.

RAID array

RAID is the abbreviation of Redundant Array of Independent Disks in English and independent redundant disk array in Chinese. To put it simply, RAID is a combination of multiple independent hard drives (physical hard drives) in different ways to form a hard disk group (logical hard disk), thus providing higher storage performance and data backup technology than a single hard disk.

The different ways of forming a disk array are called RAID levels (RAID Levels). To the user, the disk group is like a hard disk, which can be partitioned, formatted, and so on. In short, the operation of a disk array is exactly the same as that of a single hard disk. The difference is that disk arrays store much faster than individual hard drives and provide automatic data backup. The function of data backup is that once the user data is damaged, the damaged data can be recovered by using the backup information, thus ensuring the security of the user data.

There are three main benefits of using RAID technology for storage systems:

Provides disk spanning by organizing multiple disks together as a single logical volume

Improve disk access speed by dividing data into multiple data blocks (Block) to write / read multiple disks in parallel

Provide fault tolerance through mirroring or check operations

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