IBM System Storage Ideas Portal


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Status Planned for future release
Workspace IBM Storage Deep Archive
Created by Guest
Created on Oct 8, 2026

RELATED IDEAS

Expose the stored MD5 checksum through the S3 API

IBM Storage Deep Archive computes an MD5 checksum for each object when it is written to tape and stores it internally. When the object is later restored, the checksum is recomputed and compared with the stored value to verify integrity. However, this stored MD5 cannot currently be retrieved through the S3 API.

Today there are only two ways to obtain it, and neither is suitable for automated workflows:

  • A storage administrator connects to a node over SSH and runs an internal command.
  • The application issues a RestoreObject followed by a GetObject, then recomputes the MD5 on the client side.

The second option requires recalling the entire object from tape and transferring it over the network solely to verify a checksum. On a tape archive this is expensive in terms of time, drive usage, and bandwidth.

Request: expose the stored MD5 through the S3 API (for example, as object metadata returned by HeadObject or GetObjectAttributes), so that applications can retrieve it without recalling the object from tape.

Idea priority Medium

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