What a RAID controller is?

RAID is the abbreviation of Redundant Array of Independent Disks in English, which translates into Chinese to mean "redundant array of independent disks", sometimes referred to as disk array.

To put it simply, RAID is a technology that combines multiple independent hard disks (physical hard disks) in different ways to form a group of hard disks (logical hard disks) to provide higher storage performance and data backup than a single hard disk. The different ways in which a disk array is made up are called RAID levels. The function of data backup is to use the backup information to restore the damaged data once the user data is damaged, so as to ensure the security of the user data.

To the user, the composition of the disk group is like a hard disk, which the user can partition, format, etc. In summary, the operation on a disk array is exactly the same as on a single hard disk. The difference is that disk arrays can store much faster than a single hard drive and can provide automatic data backup.

RAID technology has two major characteristics: one is speed, the other is security, due to these two advantages, RAID technology was used in the SCSI interface of the advanced server in the early days of the hard disk system, with the development of computer technology in recent years, the speed of the CPU of the PC has entered the GHZ era. IDE interface hard drives are not far behind, and ATA66 and ATA100 hard disks have been launched one after another.

This makes it possible for RAID technology to be used in low-to-mid-range and even personal PCs. RAID is usually implemented by a RAID controller in a hard disk array tower or a RAID card in a computer.

RAID technology has evolved and now has seven basic RAID levels, from RAID 0 to 6. In addition, there are some basic RAID level combinations, such as RAID 10 (a combination of RAID 0 and RAID 1), RAID 50 (a combination of RAID 0 and RAID 5), etc. Different RAID levels represent different storage performance, data security, and storage costs.

But the following forms of RAID are most commonly used.

1) raid 0

2) raid 1

3) raid 0+1

4) raid 3

5) raid 5

There are three main factors in the choice of RAID level: availability (data redundancy), performance, and cost. If availability is not required, choose raid0 for optimal performance.

If availability and performance are important and cost is not a major factor, RAID 1 is chosen based on the number of hard drives. If availability, cost, and performance are all equally important, RAID 3 and RAID 5 are chosen based on general data transfer and the number of hard drives.

Install the corresponding driver on the drive disk according to the operating system version.

It's the driver of the disk array card, if it doesn't work, you won't find it if you deactivate it.

RAID is the abbreviation of "Redundant Array of Independent Disk", which means independent redundant disk array in Chinese. Redundant disk array technology was born in 1987 and was proposed by the University of California, Berkeley.

Array driver, if you don't have one. It is possible not to install it.

Open it. My Computer Right-Click - Properties - Hardware - Device Manager.

You can see that there is a RAID controller as a question mark, right-click it and select deactivate it, and it's OK.

Disk array controllers are a type of data security technology that is generally used on servers

Categories: Computer Network >> Operating System System Fault Description:

What is a RAID controller? Where to install the drive? Is it the motherboard's driver?

Analysis: RAID (Redundant Array of Independent Disk) technology was proposed by the University of California, Berkeley in 1987, and was originally developed to combine small cheap disks to replace large expensive disks, and at the same time hope that access to data would not be lost when the disk fails. RAID is a redundant array of multiple inexpensive disks that appears as a large, independent storage device under the operating system.

RAID can give full play to the advantages of multiple hard disks, can improve the speed of hard disks, increase capacity, provide fault tolerance to ensure data security, easy to manage, and continue to work in the event of problems with any hard disk, without being affected by damage to hard disks.

A RAID controller is a device that manages data access in both physical and logical arrays. The system can view the logical drives, but do not have to manage them directly. The functionality of a RAID controller can be implemented by both hardware and software.

Hardware RAID is generally used in RAID mode to handle large amounts of data. As processors continue to grow, software RAID capabilities have become possible, but CPUs can still be overwhelmed when dealing with large amounts of data. Later in this article, we will discuss what kind of applications and RAID modes are better suited for hardware or software RAID.