https://aws.amazon.com/glacier/#highlights https://aws.amazon.com/glacier/#highlights > Amazon Glacier is designed to provide average annual durability of 99.9

https://aws.amazon.com/glacier/#highlights https://aws.amazon.com/glacier/#highlights > Amazon Glacier is designed to provide average annual durability of 99.999999999% for an archive. The service redundantly stores data in multiple facilities and on multiple devices within each facility. To increase durability, Amazon Glacier synchronously stores your data across multiple facilities before returning SUCCESS on uploading archives. Unlike traditional systems which can require laborious data verification and manual repair, Glacier performs regular, systematic data integrity checks and is built to be automatically self-healing.