Detail Explanation Of SAN Storage Architecture What is SAN and How SAN Storage Works

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This video explains What is SAN storage how SAN storage works. What are the SAN Storage components and how they connect to each other?
www.sannastechie.tk/2018/11/d...
What is SAN Storage?
SAN storage stands for Storage Area Network. A SAN is a specialized high‐speed network of storage devices and SAN switches connected to computer systems called as Host or Server via Fiber optic cables. A host uses the storage from storage arrays as if it is local to Host. As the data communication happens via fiber optics the data speed is high in comparison to NAS storage.
Components Of SAN Storage
SAN Components can be divided into 3 layers. Host, Fabric and Storage Layer. These three layers connect to each other and form a Storage Area Network or SAN network. Each layer has its own functions. We will discuss their function in the coming section.
Host Layer Of SAN Storage
The host layer of SAN Storage has servers or hosts. Hosts are basically hardware having its own resources like CPU, Memory, Disk storage and an Operating system running on it. Along with these, it has also dual HBA card which connects to the Fabric Layer of SAN Network.
What is Fabric In SAN Storage
Fabric layer or a Fabric of SAN storage consists of one or more SAN switches. SAN Switch provides connections points in SAN architecture. All Host connects to SAN switch and Storage Array also connects to the same SAN switch. Thus it acts as a mediator between Host and Storage.
Typical SAN network has two fabric for high redundancy. In case if one Fabric goes down then other fabric takes care of the data flows in the storage area network.
Storage Layer in Storage Area Network
In the storage layer of Storage Area Network, storage arrays are present where data resides in physical disks. Storage Array consists of a physical disk. These disks are grouped logically using a special technology called RAID for data protection. These RAID helps in data recovery whenever a disk failure occurs. There various types of RAID types. Depending on requirement specific RAID type is selected for creating a raid group. Common RAID types are RAID 5 and RAID 6.
Most of the storage arrays have Dual storage processors (SPs) which are the front end of the storage array. This SP has a front end IO module that has FC ports. These FC ports connect to SAN switch via FC cables.
How SAN Storage Works
When a host from a host layer wants to access a storage device on the SAN, it sends out a block‐based access request for the storage device. SCSI commands are encapsulated into FC packets. Then the Host HBA transmits the FC request to the Storage layer via Fabric.
From the Fabric layer, SAN Switch then sends this request to Storage Array. In Storage Array, SP receives the request, processes it and then sends an acknowledgment back to the host through the same path.

[@robinho22]

Great videos, hope you keep doing this 🙏

[@CheesieGamer]

new to your channel.... willling to learn a lot as I am applying for a position for purestorage tech support! happy and grateful for your great work

[@RokeshJr]

This explanation was very clean and neat. I salute you bro

[@Snowflakes_7]

Wonderful Explaination ever, Thank you so much 🙏🙏🙏

[@wahidkhan1018]

Very helpful and clear concept.

[@vishalsarode3589]

Great it helped me in one project Thank you.

[@jermiasisliko]

thank you for video and explanation, very helpfull...

[@abhilashreddyintha8374]

Good English with high base we said sir...🙏

[@SenthilKumar-ic3wc]

Good information, thank u much

[@mrhallman64]

Thank you

[@scottcardinal6147]

Thx you

[@piyushbhardwaj6199]

As you mentioned, SAN Switches are for redundancy, do they also used for load sharing when both the switches are up and working ?

[@sureshpatil145]

Nice explanation👌👌

[@anthonyminchinton3399]

How do the client computers connect to the SAN to read & write data?

[@genesisdny]

Tx, qq, excuse my ignorance ..
1. why do we have tape library setup/deployed, on a san environment, aldough weve gotten san arrays fr storage
2. If we use Baas, do we connect san directly to the cloud Baas

[@pkbcars5980]

Awesome. Keep it up

[@saNasTech]

Thank You

[@shaikbasha6673]

very helpfull to me...thank you broh

[@saNasTech]

You are most welcome

[@thegoldenfishzplays9938]

I have the exact setup like yours. However, my question was is there a way to load balance the traffic? for e.g. i tried server 1 doing speedtest on the server, i tried 2nd server do it then their speed is split into half...supposingly both are running on the same fabric switch. Would it be possible for them to see if there's a load it will change the 2nd server to go through the other HBA?

[@raja7337]

Pp

[@jorgegonzalezv6180]

Two servers and two mds switch can build a san ?

[@Rashmiicon]

👌👌

[@rameshdeva5445]

What is vlan port configuration?

[@pranabbharali3787]

Please make a video on how to mount a device and configuration san on it.

[@shishirsachdev7953]

Thanks for the video, could you please compare different types of storage arrays- NAS, SAN etc.

[@Rickety3263]

I like the fact this channel is devoted to SAN. The intro comparison video comparing san nas das has been done 1 million times

[@venkateshb8680]

Can you plz upload videos on raid technology

[@praveen91285]

Please explain different between SAN AND NAS

[@rameshdeva5445]

What is controller ips ?

[@rowellperez6093]

do we really need to have san switch for us to setup san?

[@saNasTech]

You can directly attach storage devices to the server but that will be called DAS storage. However, having a SAN switch gives you the ability to scale and flexible management.

[@sandeeplav5118]

i want more videos........

[@saNasTech]

Sure Sandeep Stay tuned for more

[@preetifriends6]

Hi.. Can you share the slides please?

[@kumarr1501]

No videos from long time any reason Admin.