We built GradedBlue Music with data safety as the foundation. We understand the importance of keeping your music safe and secure. That's why every file you upload to GradedBlue Music is stored in across multiple servers in multiple data centers. Even if an entire data center goes offline, your music will still be available.
When you start an upload, the app or web player first calculates the checksum of your file. A checksum is like a fingerprint of the file - if the file changes, so does the checksum.
When the upload begins, the file is first written to a single geographic region, made up of multiple availability zones. Each block of data must be written to at least two zones, and the checksum of each file must match the original before the write is considered successful.
Then, jobs are started in parallel to copy the file to two other regions, each with their own availability zones. Again, the checksum is checked for each file transfer. At the same time, transcoding jobs are started in the initial region to create streamable versions of the file in multiple qualities. Each of these new files is also replicated like the original.
Your music is stored in at least three regions, each with their own availability zones, and in multiple qualities. If a server, zone or entire region goes offline, your music is still available in multiple other locations.