What is Reid? Introduction of RAID levels
In this article, from the Fa host knowledge base , we have decided to introduce the types of reeds and their features . But what is Reid? We should address this question before anything else and find the right answer. What is raid on the motherboard and checking the training of hard server raiding can have a great impact on the quality of our work. This technology is used to increase the speed and security of data storage on the hard disk. For this reason, identifying the best type of raid and using it correctly can have a great impact on choosing a hosting service and ultimately on your performance. Stay with us until the end of this article so you can understand this important technology well.
The topics we will discuss in this article will be as follows:
- What is Reid?
- What is Reid’s history?
- How does Raid work?
- How is the Raid organized?
- What are the different levels of reed?
What is Reid?
Red stands for Redundant Array Inexpensive Of Disks Independent Disks . , sometimes known as Redundant Array Of The literal meaning of Raid is an extension array of independent disks. But if we want to explain it in a more comprehensive way, it should be considered as the technology of combining several hard drives together. With this, the data that is supposed to be stored in a hard disk is stored in the same way in the disks connected together in a read. This increases speed, capacity, improves performance and preserves data in the event of disk damage. Of course, be careful that there are other technologies to preserve information, such as regular backups on separate servers, so that if the main hard disk fails, the information will not be lost in any way. Fa Host Group uses this technique to store its users’ information.
If you use FA hosting services, you should know that your website information is backed up and stored on separate servers inside Iran. Other users, if they wish, can prepare Iran’s backup hosting . In this way, in addition to the fact that a backup version is automatically prepared from the information on the website, you will be relieved that the backup versions of your information are stored on domestic servers.
What is the history of Reed?
The term Reed was first introduced to the world in 1987 by David Peterson, Randy Katz and Garth Gibson. They believed that the use of several independent and accessible sectors together can improve the performance of the main hard disk. In addition, storing information on several hard drives can ease people’s worries about saving information on hard drives when facing system problems.
This theory was discussed and debated and evolved over time. Currently, hard disk recoding is one of the most widely used technologies in the world. Of course, it is true that the term Reid was first introduced by this group of 3, but before that, people like Patenty or Digital Equipment had also worked on this theory. But it was with the report of this 3-member group that a complete and integrated definition of Raid was provided.
How does RAID work?
So far, it has been tried to answer the question, what is Reid? be answered Now we are going to introduce you to how to work with it. In a Raid, depending on its type, certain hard disks are used, and this causes the difference between the different raids available in the market. Each of these raids are known as different Raid levels . The difference between the different read levels depends on the characteristics created by the composition of the hard drives. These features include:
- What is Reed’s fault tolerance?
One of the main goals of Reed has been to create a possibility to preserve information against the occurrence of any problems in the hard disk. Different forms of Reed differ from each other in terms of resistance to causing problems in the hard disk. - What is performance?
Since several hard disks are used in one read, the data processing speed increases effectively and we will see good performance. Now, according to the type of Raid, the type of performance will also be different. - What is capacity?
Capacity is another thing that will change according to the type of reed. The number of hard disks combined in one read as well as the type of connection between them can create different capacities.
How is RAID organized?
After reviewing what Raid is and how it works, it’s time to give you more details about Raid. In the discussion of organizing a reed, two different aspects should be considered in general:
- Storage technique
- Reed’s performance
1. Organizing data in an array (reed storage techniques)
In general, 4 main methods are used to store data on a read. These methods include:
What is Reid’s striping technique? In this method, the data is divided into specific and identical sizes. The determined size is called block size. After dividing the data into the same block size, it is time to place these blocks on the read one by one. Storing information in this way can improve performance.
What is Reid’s mirroring technique? Another method of storing information is mirroring. In this method, identical versions of data are stored simultaneously on all hard drives of a read. In this way, in addition to improving performance, fault tolerance also increases appropriately.
What is the parity read technique? When using the parity technique, the data is divided into equal blocks like striping. But at the same time, the checksum method is also used in it. In this method, a specific parity function is defined for data blocks. For this reason, when Hardy has a problem, the lost block is recalculated with the help of checksum. This will increase the error tolerance in a read
