Common Response Headers - Amazon S3 Glacier
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

This page is only for existing customers of the S3 Glacier service using Vaults and the original REST API from 2012.

If you're looking for archival storage solutions we suggest using the S3 Glacier storage classes in Amazon S3, S3 Glacier Instant Retrieval, S3 Glacier Flexible Retrieval, and S3 Glacier Deep Archive. To learn more about these storage options, see S3 Glacier storage classes and Long-term data storage using S3 Glacier storage classes in the Amazon S3 User Guide. These storage classes use the Amazon S3 API, are available in all regions, and can be managed within the Amazon S3 console. They offer features like Storage Cost Analysis, Storage Lens, security features including multiple encryption options, and more.

Common Response Headers

The following table describes response headers that are common to most API responses.

Name Description
Content-Length

The length in bytes of the response body.

Type: String
Date

The date and time Amazon S3 Glacier (S3 Glacier) responded, for example, Wed, 10 Feb 2017 12:00:00 GMT. The format of the date must be one of the full date formats specified by RFC 2616, section 3.3. Note that Date returned may drift slightly from other dates, so for example, the date returned from an Upload Archive (POST archive) request may not match the date shown for the archive in an inventory list for the vault.

Type: String
x-amzn-RequestId

A value created by S3 Glacier that uniquely identifies your request. In the event that you have a problem with S3 Glacier, Amazon can use this value to troubleshoot the problem. It is recommended that you log these values.

Type: String
x-amz-sha256-tree-hash​

The SHA256 tree-hash checksum of the archive or inventory body. For more information about calculating this checksum, see Computing Checksums.

Type: String