The storage system has two parts: data storage and data management. The data storage part includes: storage controller hardware, disks, adapters, network transmission channels, RAID management, LUN management, etc. The main function of this part is to provide basic raw data storage services, such as storing data in the corresponding LUN or Read from it. The data management part includes: Tier, Snapshot, Clone and other data processing functional modules. The data management part is mainly responsible for some high-level data processing, just like the social needs hierarchy pyramid. The lowest needs are survival, food and clothing, and clothing. This layer corresponds to the basic storage function of the storage system for data, such as to a piece of data. Data is stored in the disk; further up are higher-level needs, such as not only food and clothing, but also good food, sufficient taste, and rich material, so that you have everything you want. This corresponds to the evolution of storage systems for data storage, such as making multiple hard disks into RAID to improve performance, and dividing LUNs to make space allocation more flexible, and hardware configurations are becoming more and more powerful; however, people's needs are always getting more and more demanding. Crazy and boring, not satisfied, but also pursuing spiritual enjoyment. For example, if you have too much money, go to the streets to spread it, or pretend to be a beggar. This corresponds to more advanced processing of data in the storage system, such as Mirro, Snapshot, etc., and even some flashy functions.   The data management part can be divided into two categories: pre-processing and post-processing of data. Pre-processing refers to the initial processing of the data before it is written to the disk, or the storage space of the data is prepared in advance before being written to the disk for storage. Examples of pre-processing are: Post Deduplication, Thin Provision etc. Post-processing means that after the data is written to the disk, the functional module reads the data for processing, and then writes it back to the disk. Typical examples of post-processing include: BackGround Deduplication, Data Migrating, etc. Some functional modules include both pre-processing and post-processing, such as Snapshot. The generation of Snapshor is a post-processing process, but once the Snapshot is generated, each affected IO will also go through an additional pre-processing process, such as the CoW process, before being written to the hard disk; another example is that MinroMiror can be executed synchronously. It can also be executed asynchronously in the background. The former is pre-processing, while the latter is post-processing.   STOR Technology Limited provides you with high-quality Raid Card, HBA Card, Hard Disk Drive, etc. such as: 05-26105-00, 05-25420-10, 05-50011-02, 05-50134-03. We provide you with higher-quality services and assured after-sales service. Welcome to visit us and discuss related products with us. Our website: https://www.cloudstorserver.com/ Contact us: alice@storservers.com / +86-755-83677183 Whatsapp : +8613824334699  

A computer is like a biological brain. The brain uses eyes, ears, nose, and skin as input devices to obtain various information, while the computer uses keyboard, mouse, serial port, USB interface, etc. as input devices to obtain various information. The brain uses neural networks to transfer acquired information to the nerve center, while computers use various bus technologies to transfer information to the CPU for calculation.   The brain uses neural networks to transfer calculated information to "devices" such as arms, legs, muscles, etc.; and computers also use buses to transfer calculated data to external devices, such as monitors, printers, etc. The human brain can store a variety of data, and computers can also use external media to store data. From this point of view, the computer itself is an external information storage and processing tool for the human brain. The field of computer storage studies how to provide data to computers quickly and efficiently to assist in their operations. Like the history of human storage, computer storage technology has also continued to develop and grow, from early floppy disks and hard drives with only a few dozen megabytes in size to today's single hard drives with a size of 1TB, and USB flash drives with a capacity of 4GB or even 16GB. In order to pursue high speed, people make multiple disks into a RAID (Redundant Arrays of Independent Disks) system, that is, each independent disk is formed into an array to jointly store data and speed up data storage.   While pursuing high speed, the capacity problem must also be solved. The storage capacity requirements of modern computer programs have become enormous. The latest Windows Vista operating system takes up more than 6GB of disk space just after installation. Some large-scale 3D games require 2GB, 4GB, or even 8GB in size just to install the files. The database files generated by some database management programs may be several TB or even hundreds or thousands of TB in size. The traditional method of placing the hard disk in the computer chassis can no longer meet the storage capacity requirements of modern applications, which has given rise to network storage technology.   Network storage extends the storage system to the network, making the storage device a node on the network for access by other nodes. In this way, even if there is only one hard disk in the computer host, or even no hard disk, the computer can still access data on the storage device through the network. Currently, the hot technology in the field of computer storage is network storage technology, which focuses on how to provide data flow services to other nodes on the network. Based on network storage, many other related technologies can be promoted and applied.   It can be seen that the storage field is an all-encompassing field. If you do not understand computer systems, it is difficult to master storage technology.   STOR Technology Limited provides you with high-quality Raid Card, HBA Card, Hard Disk Drive, etc. such as: 05-26105-00, 05-25420-10, 05-50011-02, 05-50134-03. We provide you with higher-quality services and assured after-sales service. Welcome to visit us and discuss related products with us. Our website: https://www.cloudstorserver.com/ Contact us: alice@storservers.com / +86-755-83677183 Whatsapp : +8613824334699

Current magnetic disks can be divided into single-disc disks and multi-disc disks. The former has only one disk in the disk body, while the latter has multiple disks. As mentioned before, data can be stored on both sides of each disk, so each disk needs two heads, each reading and writing on one side. However, one thing must be clarified: the disk only allows one head to read and write data at a time. In other words, no matter how many platters and heads there are in the disk, it is impossible to improve the throughput and IO performance of the hard disk, but can only increase the capacity. However, many people are already committed to changing this status quo, hoping to enable the magnetic heads to read and write concurrently within the disk, which is equivalent to forming a RAID between the disks and the disks to improve performance. However, this project has not yet been able to Application products.   Factors that affect hard drive performance include the following: (1) Rotation speed: Rotation speed is the primary factor affecting the throughput performance of the hard disk during continuous IO. When reading and writing data, the magnetic head does not move. It depends entirely on the rotation of the disk to sense the data in the corresponding sector to the magnetic head. Therefore, the faster the disk rotates, the shorter the data transmission time.   In the case of continuous IO, the number of head arm seeks is very small, so to improve the throughput or IOPS value, the rotation speed is the primary influencing factor. At present, mid-to-high-end hard drives generally run at 10,000 rpm or 15,000 rpm. Recently, some manufacturers are trying to achieve 20,000 rpm hard drives, and they already have finished products, but it remains to be seen whether they will be widely used in the end.   (2) Seek speed: Seek speed is the primary factor affecting disk random IO performance. In the case of random IO, the head arm needs to change tracks frequently, and the time spent on data transmission is very small compared to the time consumed by track changing, not at all in the same order of magnitude. So if the head arm can change tracks at a very high speed, it will increase the random IOPS value. The current average seek speed of high-end disks is below 10ms.   (3) Single disk capacity: Single disk capacity is also an indirect factor affecting disk performance. The higher the capacity of a single disk, the greater the amount of data in the same space, that is, the greater the data density. Under the same rotation speed and seek speed conditions, hard drives with high data density will show higher performance. Because under the same overhead, a hard drive with a high single-disk capacity will read more data. At present, manufacturers have developed hard drives with a single-disc capacity of more than 300GB, but they have not been put into use yet.   (4) Interface speed: Interface speed is the least important factor affecting hard disk performance. The current interface speed theoretically meets the highest external transmission bandwidth that the disk can achieve. In a random IO environment, interface speed is even less important, because the bottleneck is almost entirely seek speed. However, high-end hard drives use high-speed interfaces, which is a common practice.   STOR Technology Limited provides you with high-quality Raid Card, HBA Card, Hard Disk Drive, etc. such as: 05-26105-00, 05-25420-10, 05-50011-02, 05-50134-03. We provide you with higher-quality services and assured after-sales service. Welcome to visit us and discuss related products with us. Our website: https://www.cloudstorserver.com/ Contact us: alice@storservers.com / +86-755-83677183 Whatsapp : +8613824334699