Archive for March, 2010

What is a Storage Area Network?

Thursday, March 25th, 2010

Storage Area Network or SAN is a network architecture that allows devices to connect to remote storage server operating systems can access these devices. A SAN is usually found in corporate environments where you connect the islands of data storage, with the help of a high-speed network. SAN allow applications to store their data on the hard disk virtual applications to treat them as local file systems that are not shared between them. This enables synchronization of the cache, data security and helps prevent damage to files. Although data can be displayed simultaneously, editing and rewriting is to prevent and prevents therefore unintentional corruption that would otherwise be inevitable. This is a great advantage of a SAN over conventional file-sharing systems.
SAN contribute to greater and better utilization of storage capacity, such as connecting multiple servers to storage units. SAN is used to make available the data used is often connected to the disk as a mail server, user information and file servers that you frequently use transactional data management.
SAN not as a participant in the application are a network between servers and storage devices, why not create bottlenecks on the LAN. This allows quick and free passage to all data, especially mission-critical data. SAN since they are capable of providing storage to storage connectivity and are ideal for use with new technologies cluster in which computers are used in groups to improve performance. It also allows them to be used for the NAS disk capacity and tape can be extended to multiple servers.
SAN was developed using the fiber channel that allow a maximum speed of 200 Mbps Fiber Channel supports multiple servers and can connect to multiple devices. A fiber channel network consists of San Fiber Channel switches. Routing Fiber Channel offers more advantages in scalability, allowing transfer of data between different tissues of the fiber channel without merging the fabrics. A fiber-optic bus can provide connectivity up to 10 miles before it must make use of an extender. And network protocols supported by Channel SAN include SCSI, HIPPI, IP, ATM, etc.
SAN enable remote boot server that leads to quick and easy replacement of the server is not working properly. Disaster Recovery is easy through a SAN, including storage replication can be implemented by those responsible for disk arrays and server software both. SAN over WAN IP enables business continuity disaster. An initial problem with the SAN that uses Fiber Channel technology has been the lack of interoperability between switches and equipment supplied by different manufacturers. This, however, has been remedied to a great, because now the rules are in force.
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Monday, March 8th, 2010


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