4 Archival Storage with Amazon S3 Free Online FlashCards

How does S3 Glacier Instant Retrieval provide access?

It provides millisecond access without a restore request; read objects with a normal S3 GET. Its minimum storage duration is 90 days.

What access model and minimum duration apply to S3 Glacier Flexible Retrieval?

Objects must be restored before reading, with retrieval typically taking minutes to hours. The class has a 90-day minimum storage duration.

What access model and minimum duration apply to S3 Glacier Deep Archive?

Objects must be restored before reading, and access typically takes hours. Its minimum storage duration is 180 days.

What are the typical S3 Glacier Flexible Retrieval times by tier?

Expedited retrieval typically takes 1–5 minutes, Standard 3–5 hours, and Bulk 5–12 hours. Bulk retrievals are free for this class.

What are the S3 Glacier Deep Archive retrieval options?

Standard retrieval is typically within 12 hours and Bulk within 48 hours. Expedited retrieval is not available.

What limitation applies to on-demand Expedited retrieval?

Expedited retrieval is not guaranteed to be available on demand unless provisioned capacity is purchased.

What happens to an archived object when it is restored?

A restore creates a temporary readable copy for the requested number of days; the original remains archived. The temporary copy expires afterward.

What storage charges apply while an archived object is restored?

During the restore period, both the archived object and its temporary copy incur S3 Standard rates.

How can an S3 Lifecycle rule limit which objects it affects?

They can target a whole bucket or use filters such as an object prefix or tag.

When do destination charges and minimum-duration timing begin for an eligible transition?

When a rule becomes eligible, AWS starts charging the destination-class rate and minimum-duration clock, even if the physical transition happens later.

What is the default Lifecycle size threshold for transitions?

By default, Lifecycle does not transition objects smaller than 128 KB. This helps avoid transition-request costs outweighing storage savings.

What per-object metadata overhead do Flexible Retrieval and Deep Archive add?

Each object adds 40 KB of metadata: 32 KB billed at the archive-class rate and 8 KB at the S3 Standard rate.