What is Storage Area Network (SAN)

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Storage Area Network is a type of computer network. Which provides the facility of a block level data to the users to maintain the storage. A SAN is a set of switches, hosts, storage devices and storage elements that make up it.

Storage Area Network: Only accesses the block cable. The file system that makes up the SAN provides file level access which are also known as Shared-disk File Systems.

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Definition of Storage Area Network

SAN is made up of hardware and software. Which is developed from data-centric mainframe architecture. Under which clients can stay connected to different types of servers in a network.

What is Storage Area Network (SAN)

We define SAN as an independent high-speed network that interconnects and delivers a shared pool of storage devices to different types of servers. All servers can access Shared Storage.

The storage area network is mainly used to gain access to data storage devices such as disk arrays and tape libraries. So that the device can show the operating system in the state of Direct-attached storage.

In addition to storing data, SAN allows automatic backup and storage of data as well as monitoring the backup process. SAN is a very dedicated network for storing data.

What is the use of SAN?

Why is Storage Area Network used, what is its use.

  1. This improves the availability of the application.
  2. Increases the effectiveness of storage usage, strengthens storage resources, improves data protection even more.
  3. The storage area network plays an important role in the business continuity management of an organization.
  4. Improves the performance of the application.

How SAN works 

It is a kind of network. Whose task is to keep the server connected to the storage. The function of SAN is to receive storage from different types of servers and locates the storage, manages and protects the storage resources centrally.

storage area network

Collective storage is connected to the server through a separate network. And along with Traditional Lan, Storage Traffic Performance is further optimized.

Components or components of a storage area network

SAN is known to have 3 different layers. Each layer has its own unique characteristics and components.

1. Host layer

Host layer represents Attach Servers. Host servers mostly run enterprise workloads such as databases, which require storage/access. SAN host also includes Separate Network Adapter which is dedicated to SAN Access.

Fc is the most popular and powerful technology among SAN technologies, the network adapters used for Fc SAN are called Host Bus Adapter (HBA).

2. Fabric Layer

Under the Fabric Layer, there are SAN Networking Devices such as – SAN Switch, Protocol Bridge, Gateway Device, Router and Cable. Compliant with Cabling and SAN Fabric Devices, Port Optical Fiber Connections employ cables based on Traditional Copper for multiple-distance network communication.

When SAN Fabric is constructed, Multiple Connections are implemented to provide Multiple Paths. Any one of these paths Damage SAN Communication uses its Alternative Path.

3. Storage Layer

Storage layer is associated with different storage devices collected in different storage pools or tiers or types. The Storage Layer includes Traditional Magnetic Hdds (Traditional Magnetic HDDs). But it can also include optical media devices such as CDs, DVD drives and tape drives as well as SSDs. 

About SAN Switches 

SAN Switch is the focal point of a SAN. As with most network switches, the SAN switch receives data packets in one way. Also determines the source and location of the packet and forwards the packet to the device of the desired location.

The SAN Fabric Topology defines the types of switches and the number of switches such as Modular Or Edge Switch, Backbone Switch as well as the way the switches are interconnected.

Smaller SANs can use modular switches with 16, 24 or 32 ports, but larger SANs can use backbone switches with 64 or 128 ports.

Quality Of Service 

SAN Storage’s Quality of Service enables the calculation and maintenance of desired storage performance for customers. Some factors that affect SAN QOS . 

1 . Bandwidth – Measures the rate of throughput of the data that is available on the system. 

2 . Latency – Detects the delay in time for read and write operations to execute. 

3 . Queue Depth – Underlying Disk helps in checking the number of outstanding operations for the time it takes to execute traditional or solid-state drives. 

Advantages of SAN 

Here you are told the features of the Storage Area Network

  • Data Security – Security of data is important for every business. The security of data with SAN is excellent. It keeps your data safe. &#23#2310;The cooked data is completely safe from hackers.
  • High Availability – There is no failover path between the host and the storage device in a SAN. Communication across the fabric always finds an alternative path to maintain the availability of storage for workloads.
  • Reduction in bandwidth issues – It improves bandwidth problems.
  • Fast data transfer speed – This technology transfers data through fiber optics, which can transfer data at a speed faster than 5 Gbps.
  • High Performance – Typical SAN uses a separate network fabric. Fabric traditionally provides top performance for FC.

Disadvantages of SAN 

Just as you know the advantage of san above, in the same way it also has some disadvantages.

  • Expensive Storage – A significant amount may have to be paid to use it, as it provides industry-leading data storage and transfer facility.
  • Management – ​​SAN Management is a kind of big challenge. Configuring Lun Mapping and Zoning is a problem for busy organizations.
  • Improper working on some servers – SAN doesn’t work well on some servers.

What does Storage Area Network mean?

SAN is known as storing data. Which interconnects a shared pool of storage devices for multiple types of servers.

How does SAN work?

It receives and locates storage from different types of servers.

How many components does a SAN have?

There are 3 components of this network which have been explained in detail above.

What is the full forum of SAN?

The full form of SAN is “Storage Area Network”.

what did you learn today

I sincerely hope that I have given you complete information about what is storage area network. And I hope you guys have understood about them.

It has always been my endeavor that I should always help my readers or readers from all sides, if you people have any doubts of any kind, then you can feel free to ask me. I will definitely try to solve those doubts.

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