Higher up someone calculated that they have 2TB of data, considering their $11/mo Backblaze bill. I calculate $11/$0.004/GB and get 2750 GB. If you have 2.75T

Higher up someone calculated that they have 2TB of data, considering their $11/mo Backblaze bill. I calculate $11/$0.004/GB and get 2750 GB. If you have 2.75TB of files to serve and have a bunch of simultaneous requests for different files: - everything doesn't fit into the RAM page cache, unless you have 3TB of RAM in your server - for files that aren't cached, you have to read from the drive - when you have a bunch of different requests for different files, you're going to have a lot of disk seeks. Seeks are expensive on rotating media. Serving a large collection of static files at scale can be quite challenging. At my previous e-commerce company, back in the early 2000's, we did our own image serving with RAID1 multiply-mirrored drives (before SSDs!) so we could multiply the seek capacity by the number of drives.