What Is a Storage Area Network (SAN)?
A Storage Area Network (SAN) is a high-performance network that connects storage devices, improving efficiency and scalability in data management

As the amount of data generated by businesses continues to grow at an unprecedented rate, it becomes increasingly important to have efficient and reliable storage solutions. At Jetstor, one such solution is a Storage Area Network, or SAN.
What Is a SAN Network?
The basics of SAN networks are simple. Storage Area Networks (SANs) are a type of storage networked to connects servers, storage devices, host bus adapters (HBAs), and switches over high-speed networks such as Fibre Channel or iSCSI. The result is a centralized, shared infrastructure that is faster, more reliable, and easier to manage than traditional methods.Storage Area Networks, or SANs, by definition, are a popular choice for businesses dealing with large amounts of data. SAN infrastructure typically involves multiple storage devices connected to a high-speed network, such as Fibre Channel or iSCSI. Creatin a SAN infrastructure requires understanding the components that make up the network is helpful. SANs storage systems rely on specific protocols and devices, such as HBAs and switches, when transferring data. Storage area network diagrams are used to illustrate the topology of the network and the connections between the various components.These high-speed networks connect multiple servers and storage devices, such as disks and tape drives. SANs provide block-level storage that can be accessed by multiple servers simultaneously, making it an ideal solution for organizations that require shared resources.
How Does a SAN Work?
SANs use Fibre Channel or iSCSI protocols to transfer data between servers and storage devices. Fibre Channel is a dedicated network that provides high-speed data transfer rates, while iSCSI uses standard Ethernet networks when executing a transfer of data.SANs typically consist of three main components:
- SANs use multiple devices, such as disks and tape drives, to store data.
- Host Bus Adapters (HBAs) are used to connect servers to the SAN.
- SAN switches connect the devices and servers together, allowing for high-speed data transfer.
Examples of SANs

There are many examples of Storage Area Networks across various industries and organizations. SANs are versatile and reliable, allowing them to be customized to meet the specific needs of many different industries and organizations. SANs are commonly used to support mission-critical databases that require fast, reliable access to data. For example, a financial institution may use a SAN to store and manage transactional data for millions of customers.Additionally, SANs often support virtualized server environments, where multiple servers share a common pool of storage. This enables administrators to easily provision resources and improve overall system performance.In the media and entertainment industry, SANs are used to store and manage large amounts of high-resolution audio and video files. This allows multiple editors to access and work on the same project simultaneously. SANs can also be used to create redundant copies of critical data and applications, enabling organizations to quickly recover from system failures or other disasters.Furthermore, SANs are commonly used in healthcare settings to store and manage electronic health records (EHRs). This allows healthcare providers to access patient information quickly and securely, improving patient care and outcomes.
Benefits of SAN
SANs offer several benefits over other storage solutions. SANs can be easily scaled to meet the growing demands of an organization. SANs provide high availability through redundant components, such as switches and storage devices, which ensure that data is always available. By providing high-speed data transfer rates and low latency, SANs can also improve the performance of applications. SANs provide centralized management, allowing administrators to manage storage resources from a single location.SANs are a powerful storage solution that offers several benefits over other storage solutions. SANs provide high-speed data transfer rates, low latency, and centralized management, making it an ideal solution for organizations that require shared storage resources. SANs can be easily scaled to meet the growing demands of an organization, providing a cost-effective solution to manage large amounts of data.If you would like to know if SANs are the right storage solution for your needs, contact Jetstor to find out more.
Other articles
Business Radio X talks to Gene Leyzarovich of JetStor
Gene Leyzarovich of Jetstor discusses advanced computer networks and storage solutions on Business Radio X. Insights into tech innovation and data storage.
Hybrid vs Public Clouds; Which makes sense for you?
Private, public, and hybrid clouds offer different benefits for businesses. Each solution balances cost, performance, and security based on organizational needs.