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Sunsetting S3 Reduced Redundancy (#412)

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Corey Quinn 4 years ago
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- For transfer, putting data into AWS is free, but you’ll pay on the way out. Transfer from S3 to EC2 in the *same region* is free. Transfer to other regions or the Internet in general is not free.
- Deletes are free.
- **S3 Reduced Redundancy and Infrequent Access:** Most people use the Standard storage class in S3, but there are other storage classes with lower cost:
- [Reduced Redundancy Storage (RRS)](https://aws.amazon.com/s3/reduced-redundancy/) has lower durability (99.99%, so just four nines). That is, there’s a small chance you’ll lose data. For some data sets where data has value in a statistical way (losing say half a percent of your objects isn’t a big deal) this is a reasonable trade-off.
- 🔸[Reduced Redundancy Storage (RRS)](https://aws.amazon.com/s3/reduced-redundancy/) has been effectively deprecated, and has lower durability (99.99%, so just four nines) than standard S3. Note that it no longer participates in S3 price reductions, so it offers worse redundancy for more money than standard S3. As a result, there's no reason to use it.
- [Infrequent Access (IA)](https://aws.amazon.com/s3/storage-classes/#Infrequent_Access) lets you get cheaper storage in exchange for more expensive access. This is great for archives like logs you already processed, but might want to look at later. To get an idea of the cost savings when using Infrequent Access (IA), you can use this [S3 Infrequent Access Calculator](http://www.gulamshakir.com/apps/s3calc/index.html).
- [Glacier](#glacier) is a third alternative discussed as a separate product.
- See [the comparison table](#storage-durability-availability-and-price).

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