They don't transcode live, IIRC, so they have each resolution and quality version stored as well. I wouldn't be surprised if there was a rack per day of non-redundant storage just for YouTube.
----- Mike Hammett Intelligent Computing Solutions Midwest Internet Exchange The Brothers WISP ----- Original Message ----- From: "Nate Burke" <n...@blastcomm.com> To: "Animal Farm" <af@afmug.com> Sent: Wednesday, March 1, 2017 11:08:15 AM Subject: [AFMUG] OT: Youtube Data Storage I was reading an article the other day that referenced that youtube users upload 400 hours of video every minute, or 65 years of video every day. Is my math right in showing that at an average of 2.5mb/s for the video size, that's 600 TB of data per day being uploaded? Given redundant copies being made, Youtube is bringing online over a Petabyte per day of storage. Since I've only been involved with Small businesses, wrapping my head around this amount of storage and $$$ is hard. Realizing that Google is custom, I'll use Backblaze for some math. Backblaze will do 45 drives in 4U@600w power draw 47U rack height = 11 4U boxes = 495HD /rack If they're 8tb drives, that's 4PB/rack. If Google is paying 1/2 retail cost for drives, that's $175/drive, or $90k per rack (+ Hardware) 6.6kw power draw (+ Cooling). So every 4 Days, they spend $100k in Hardware, and increases their electric bill by 8kw? I guess when you're dealing with Billions of Dollars, a $100k every couple days' isn't such a big deal.
