Common Response Headers - Amazon S3 Glacier

If you're new to archival storage in Amazon Simple Storage Service (Amazon S3), we recommend that you start by learning more about the S3 Glacier storage classes in Amazon S3, S3 Glacier Instant Retrieval, S3 Glacier Flexible Retrieval, and S3 Glacier Deep Archive. For more information, see S3 Glacier storage classes and Storage classes for archiving objects in the Amazon S3 User Guide.

Common Response Headers

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

Name Description

The length in bytes of the response body.

Type: String


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


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

Type: String


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

Type: String