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Storage Area Network  
 
 

A Storage Area Network (SAN) is a high-speed sub network of shared storage devices designed to handle large data transfers that interconnects different kinds of data storage devices with associated data servers on behalf of a larger network of users. SAN are primarily used to make storage devices, such as disk arrays, tape libraries and optical jukeboxes, accessible to servers so that the devices appear like locally attached devices to the operating system and typically supports data storage, retrieval and replication on business networks using high-end servers, multiple disk arrays and Fiber Channel interconnection technology.

The architecture of a SAN is such that storage resources are made available to multiple servers on a local or wide area network. SAN support disk mirroring, backup and restore, archival and retrieval of archived data, data migration from one storage device to another and the sharing of data among different servers in a network.


Key factors that affect Storage Area Network

Bandwidth: The rate of data throughput available on the system.

Latency: The time delay for a read/write operation to execute.

Queue depth: The number of outstanding operations waiting to execute to the underlying disks.

 

Some Advantages of SAN

1. Storage Area Networks (SANs) allow storage devices to exist on their own separate     network and communicate directly with each other over very fast media.

2. SANs address the bandwidth bottlenecks commonly associated with LAN-based server     storage

3. System allows a disk storage device to copy data directly to a backup device across the     high-speed links of the SAN without any intervention from a server

 

Storage Area Network (SAN) Protocols

1. FCIP: Entire Fibre Channel Frame Over IP

2. FCP: Fibre Channel Protocol

3. iFCP: Internet Fibre Channel Protocol

4. iSCSI: Internet Small Computer System Interface

5. iSNS: Internet Storage Name Service

6. NDMP: Network Data Management Protocol

7. SAS: Serial Attached SCSI

8. SCSI: Small Computer System Interface

 

Courses and Eligibility

1. Student must pass higher secondary education or 10+2 with science subjects to get    admission into bachelor’s degree program.

2. B.E in computer science or Information Science.

3. B.Tech in Computer Applications.

4. MCA in Computers.

5. M.Tech in Computers.

6. Storage Networking Certification Program (SNCP)

 

Employment

Graduates are employed in all IT companies, Government and Private Organizations.

 
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