What is the system structure of virtualized storage?

Compared with traditional storage, the advantages of virtualized storage are mainly reflected in: high disk utilization, the disk utilization of traditional storage technology is generally only 30-70%, and the disk utilization after virtualization technology is as high as 70-90%; Flexible storage, can adapt to different vendors, different types of heterogeneous storage platforms, provides better flexibility for storage resource management; convenient management, provides a means of centralized management of large-capacity storage system, avoiding the expansion of storage equipment Trouble brought by management; better performance, the virtualized storage system can load balance well, allocate the bandwidth required for each data access to each storage module reasonably, and improve the overall access bandwidth of the system.

There are a variety of classification methods for virtualized storage, which can be divided into large categories: according to the location of the virtualization in the I / O path, and according to the control path and data path. According to different locations where virtualization is implemented in the I / O path, virtualized storage can be divided into host virtual storage, network virtual storage, and storage device virtual storage. According to different control paths and data paths, virtualized storage is divided into symmetric virtualization and asymmetric virtualization.

System composition of virtualized storage

A typical storage method in cloud storage is distributed storage. In this way, storage devices are generally managed in an out-of-band virtualization manner. Metadata management and data transmission are all done through IP networks. There are four different types of storage devices in this virtualized storage system.

Client:

The client provides clients with various application services, such as World Wide Web services, databases, file services, scientific computing, etc. The storage agent software runs on the client to provide read and write access to the network virtual device for application programs.

Configure the management server:

The configuration management server is used for system configuration and management. Log in to the cloud storage platform via the Internet, Telnet, or other interfaces, and configure and manage the entire storage system remotely.

Metadata server:

The metadata server (MDS) of the cloud storage system manages the layout information of the metadata and object data of the entire system, and is responsible for system resource allocation and address mapping of network virtual disks. The global virtualized storage management software and cluster management software deployed on the MDS can manage the configuration and operation of the entire storage system. In addition, MDS realizes the data redundancy relationship between ordinary storage nodes through redundancy management software.

Object storage node:

Each storage node is an independent storage device, responsible for the storage, backup, migration and recovery of object data, and is responsible for monitoring the operating status and resource status of other storage devices. At the same time, the virtualized storage management software runs on the storage node and stores the data required by the application.

If you want to know more, our website has product specifications for virtualized storage, you can go to ALLICDATA ELECTRONICS LIMITED to get more information