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remove advice of using reduced redundancy since it is deprecated (#521)

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Michael Pereira 2017-10-13 12:59:03 -04:00 • committed by Thanos Baskous
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@ -684,7 +684,7 @@ S3
- A common practice is to use the company name acronym or abbreviation to prefix (or suffix, if you prefer DNS-style hierarchy) all bucket names (but please, don’t use a check on this as a security measure — this is highly insecure and easily circumvented!). - A common practice is to use the company name acronym or abbreviation to prefix (or suffix, if you prefer DNS-style hierarchy) all bucket names (but please, don’t use a check on this as a security measure — this is highly insecure and easily circumvented!).
- 🔸Bucket names with '.' (periods) in them [can cause certificate mismatches](https://forums.aws.amazon.com/thread.jspa?threadID=169951) when used with SSL. Use '-' instead, since this then conforms with both SSL expectations and is DNS compliant. - 🔸Bucket names with '.' (periods) in them [can cause certificate mismatches](https://forums.aws.amazon.com/thread.jspa?threadID=169951) when used with SSL. Use '-' instead, since this then conforms with both SSL expectations and is DNS compliant.
- **Versioning:** S3 has [optional versioning support](https://docs.aws.amazon.com/AmazonS3/latest/dev/ObjectVersioning.html), so that all versions of objects are preserved on a bucket. This is mostly useful if you want an archive of changes or the ability to back out mistakes (caution: it lacks the featureset of full version control systems like Git). - **Versioning:** S3 has [optional versioning support](https://docs.aws.amazon.com/AmazonS3/latest/dev/ObjectVersioning.html), so that all versions of objects are preserved on a bucket. This is mostly useful if you want an archive of changes or the ability to back out mistakes (caution: it lacks the featureset of full version control systems like Git).
- **Durability:** Durability of S3 is extremely high, since internally it keeps several replicas. If you don’t delete it by accident, you can count on S3 not losing your data. (AWS offers the seemingly improbable durability rate of [99.999999999%](https://aws.amazon.com/s3/faqs/#How_durable_is_Amazon_S3), but this is a mathematical calculation based on independent failure rates and levels of replication — not a true probability estimate. Either way, S3 has had [a very good record](https://www.quora.com/Has-Amazon-S3-ever-lost-data-permanently) of durability.) Note this is *much* higher durability than EBS! If durability is less important for your application, you can use [S3 Reduced Redundancy Storage](https://aws.amazon.com/s3/reduced-redundancy/), which lowers the cost per GB, as well as the redundancy. - **Durability:** Durability of S3 is extremely high, since internally it keeps several replicas. If you don’t delete it by accident, you can count on S3 not losing your data. (AWS offers the seemingly improbable durability rate of [99.999999999%](https://aws.amazon.com/s3/faqs/#How_durable_is_Amazon_S3), but this is a mathematical calculation based on independent failure rates and levels of replication — not a true probability estimate. Either way, S3 has had [a very good record](https://www.quora.com/Has-Amazon-S3-ever-lost-data-permanently) of durability.) Note this is *much* higher durability than EBS!
- 💸**S3 pricing** depends on [storage, requests, and transfer](https://aws.amazon.com/s3/pricing/). - 💸**S3 pricing** depends on [storage, requests, and transfer](https://aws.amazon.com/s3/pricing/).
- 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. - 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. - Deletes are free.