We believe that on the LAN, Wan and Internet have been very understanding. In the LAN system in common, we in order to better use the LAN, generally speaking, the user needs to know exactly the type and configuration of every hardware and software in the network, such as using what kind of switch, how many ports, using what router and firewall, which is how to set the. How many servers are installed, what operating system and software. Among the devices connected by cable what type, distribution of what xml:lang=IP address and subnet mask.
But when we use wide area networks and the Internet, we only need to know what kind of access network and the user name, password can be connected to a wide area network and the Internet, wide area network and the Internet does not need to know how many switches, routers, firewalls and service, does not need to know the data through what routing to reach our computer, do not need to know the network servers are installed what software, more do not need to know the connection cable and port what use between the devices in the network. The wide area network and the Internet is completely transparent to a specific user, we often represents a wide area network and the Internet using a cloud of graphics, as shown below:
Although this image contains a lot of switches, routers, firewalls and server, but the specific wide area network, Internet users, these are not known. The cloud pattern is representative of the wide area network and the Internet brings people of interconnection network service, whether we are in any place, can be through a network access cable and a user, password, you can access a wide area network and Internet, enjoy the network brought us service.
The network structure of the reference cloud storage system, create a new cloud structure, the storage system consists of a plurality of storage equipment, through the cluster function, distributed file system or similar grid computing functions combined together, and by some application software or application interface, providing certain types of storage service and access services to user.
When we use a separate storage device, we must be very clear the storage device is what type, what interface and protocol, must know clearly how many blocks of disk storage system, which is what type, large capacity, must be clear between a storage device and a server using the connection cable, what kind of. In order to ensure the continuity of data security and business, we also need to establish a data backup system and disaster recovery system. In addition, the storage device regularly in condition monitoring, maintenance, hardware and software updating and upgrading is necessary. If the cloud storage, the above all the user do not need. All equipment cloud storage system is completely transparent to the user, any place any authorized user can access through a cable connected with the cloud storage, data access on cloud storage.
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