Cold storage pricing

Question

I try to understand how the cold storage pricing works for AWS Backup.
For instance let's say we have this scenario:

`We have an EFS drive with 50 TB of data.
The backup is scheduled for every day and data are transitioned to cold storage after 7 days.
Every day 0.25 TB of data change`

How will the storage type look like at the 9th day?
Is it like the following?
warm storage: 0.25 * 7 TB
cold storage: 50 + 0.25 * 1 TB

Thank you for the help!

Answer

AWS Backup storage pricing is based on the amount of storage space your backup data consumes. The storage amount billed in a month is based on the average storage space used throughout the month (billed as GB-Month). For Amazon EFS File System, the cost is $0.05 per GB-Month for warm storage and $0.01 per GB-Month for cold storage for the us-east1 region. Using the pricing example in the below URL, I would estimate the cost as follows. I excluded the 0.25 TB of growth for simplicity.

50,000GB x 7 days = 350,000 GB Days 350,000 /30 = 11,666.67 GB-Month 11,666.67 * 0.05 = $583.33 for 7 days of warm storage

50,000 GB x 23 days = 1,250,000 GB Days 1,250,000 /30 = 38,333.33 GB-Month 38,333.33 * 0.01 = $383.33 for 23 days of cold storage

https://aws.amazon.com/backup/pricing/

50,000GB x 7 days = 350,000 GB Days
350,000 /30 = 11,666.67 GB-Month
11,666.67 * 0.05 = $583.33 for 7 days of warm storage

50,000 GB x 23 days = 1,250,000 GB Days
1,250,000 /30 = 38,333.33 GB-Month
38,333.33 * 0.01 = $383.33 for 23 days of cold storage

https://aws.amazon.com/backup/pricing/

Cold storage pricing

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