Amazon Glacier Storage Service

We will learn the concepts of Amazon Glacier Storage Service.

• low-cost storage service
• provides
  • durable storage
  • secure storage
  • flexible storage for data archiving and online backup.
• designed for infrequently accessed data
• retrieval time of three to five hours
• Amazon Glacier Storage Service can store an unlimited amount of data virtually of any type and in any format.
• Useful for
• Replacement of traditional tape solutions for long-term backup
• Archive and storage of data required for compliance purposes.

Archives

• In Glacier, data stores in archives.
• archive can contain up to 40TB of data, with unlimited number of archives.
• each archive has a unique archive ID at the time of creation.
• All archives automatically encrypt
• Archives are immutable and
• once an archive is created, it cannot be modified.

Vaults

• They are containers for archives
• Each AWS account can have up to 1,000 vaults.
• control only for access to vaults and
• actions allowed by using IAM policies or vault access policies.

Vaults Locks

• A vault lock policy deploy and enforce compliance controls for individual Glacier vault.
• can specify controls such as Write Once Read Many (WORM) and lock the policy from future edits.
• policy cannot modify once get lock.

Data Retrieval

• AWS policy allows retrieval of up to 5% of data in Glacier for free, each month
• More data retrieval charge as per maximum retrieval rate.
• Set data retrieval policy on a vault to limit the retrievals to the free tier or to a specified data rate.

Amazon Glacier vs S3

• Amazon S3 supports 5 TB objects in comparison to Amazon Glacier supports 40TB archives.
• Archives in Amazon Glacier are identified by system-generated archive IDs, on the other hand Amazon S3 lets you use “friendly” key names.
• Encryption at rest is optional in Amazon S3 where Amazon Glacier archives are automatically encrypted.