Server architecture of YouTube needed

Asked By 70 points N/A Posted on -

Hello techy experts,

I need to clarify a doubt, I need to know about, how YouTube can store huge quantities of videos. I am amazed of server architecture of YouTube. Can anyone please tell me about the server architecture of YouTube for my understanding.

Thanks & Regards,

Paul S Douglas

Answered By 0 points N/A #188683

Server architecture of YouTube needed


Hello Paul,

Youtube is owned by Google, and over a million servers, which is 2% of the entire world's servers, are dedicated to video storage.
They use a particular type of hard drives known as SANs, which are quite similar to the hard disks used in laptops or desktop computers. They are mostly SCSI or SAS, a faster and more reliable brother of SATA.
In fact, each video is hosted by a minicluster and is served by more than one machine. It means too having a headmachine to take over other machines when they go down. Besides, there are online backups. Popular videos are hosted by a CDN which replicates videos in multiple places. CDN machines use memory because the content is so popular that there is a little thrashing of content into and out of memory. 
Cache servers with large amounts of memory and rapid storage are used when many people are watching the same video at one time.
Hope this helps.
Best regards,

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