Costs of enabling versioning in s3
I have a question about the costs of versioning in s3 that don't seem to be present in the guide. There is a cost for every PUT/POST, but for versioned objects(especially when you keep older versions in alternative storage such as glacier) does each PUT/POST cost 2x the PUT/POST cost, one for the new version then one to move the old version to glacier?
Answer
You can refer to FAQ page: https://aws.amazon.com/s3/faqs/?nc1=h_ls
Q: How am I charged for using Versioning?
Normal Amazon S3 rates apply for every version of an object stored or requested. For example, let’s look at the following scenario to illustrate storage costs when utilizing Versioning (let’s assume the current month is 31 days long):
1) Day 1 of the month: You perform a PUT of 4 GB (4,294,967,296 bytes) on your bucket. 2) Day 16 of the month: You perform a PUT of 5 GB (5,368,709,120 bytes) within the same bucket using the same key as the original PUT on Day 1.
When analyzing the storage costs of the above operations, please note that the 4 GB object from Day 1 is not deleted from the bucket when the 5 GB object is written on Day 15. Instead, the 4 GB object is preserved as an older version and the 5 GB object becomes the most recently written version of the object within your bucket. At the end of the month:
Total Byte-Hour usage [4,294,967,296 bytes x 31 days x (24 hours / day)] + [5,368,709,120 bytes x 16 days x (24 hours / day)] = 5,257,039,970,304 Byte-Hours.
Conversion to Total GB-Months 5,257,039,970,304 Byte-Hours x (1 GB / 1,073,741,824 bytes) x (1 month / 744 hours) = 6.581 GB-Month
The fee is calculated based on the current rates for your region on the Amazon S3 Pricing page.