Research, Based On The Data Reliability Of The Storage Area Network Technology

A revolution is changing the economic of the earth. The key factor of revolution is knowledge. Information is one of the most important factors of producers' goods. Rapid increasing information amount bring huge challenge to information handler and storage. The research on storage management gains a lot of attention and becomes a hotspot in storage research field. The development of storage hardware brings great opportunity to storage management technology. People can manage more data by storage area network than before. SAN centralize the management of multiple devices to one console, but it will never exceed the limit of one's ability. Several surveys indicate that the storage management is the bottleneck of storage system development. The storage management should not only promote the value of storage device, but also promote the value of storage manager. The storage manage software should do most regular and reputably work to decrease the difficulty of storage management.With the popularity of data intensive applications, the value of data is greater than the value of computer system itself. Unexpected halt down or data lost will bring huge damage to enterprise. Terrorism attack as 911, power failure and hard disk failure will cause data lost. To avoid data lost, many technologies were developed, such as tape backup, remote mirror and snapshot. Dependability is coming to a important factor when user choose storage system. But the research of storage dependability remains following problems: (1) the dependability request of different data in one disk array is different, but people always concern the dependability of disk array, which should be dependability of data on it. Though different backup method, we can provide different dependability of data, but we didn't compute the dependability of data before. (2) Over the last decade, the set of data protection techniques has increased significantly. In addition to traditional tape-based backup, online techniques using high-density disks and incremental snapshots are becoming attractive. F.ach technique provides some portion of the protection that is needed; combined, they can cover a much broader range. The key question, then, is how to determine the appropriate combination of different techniques to provide the data protection desired by the user. The complex technologies and the parameter make it different to define a proper solution suit the user's request. It needs a standard can be use to define user request and compare different solution. (3) Backup is not the...