A legal firm has archived its legal documents in two storage classes: S3 Glacier storage class & S3 Glacier Deep Archive storage class. For liaising with new international clients, they need to submit some of the documents urgently. They are looking for these documents at the earliest time to get restored. Which of the following is a recommended way to have get these data available in the fastest possible way?

Answer options:

A.Use Standard retrieval options for objects to be restored from both the S3 Glacier storage class & S3 Glacier Deep Archive storage class.
B.Use Standard retrieval options for objects to be restored from the S3 Glacier storage class & expedited retrieval options for data stored in the S3 Glacier Deep Archive storage class.
C.Use Expedited retrieval options for objects to be restored from the S3 Glacier storage class & standard retrieval options for data stored in the S3 Glacier Deep Archive storage class.
D.Use Expedited retrieval options for objects to be restored from both the S3 Glacier storage class & the S3 Glacier Deep Archive storage class.

Correct Answer – C
Standard or Bulk retrieval options can be used with the S3 Glacier Deep Archive storage class. An expedited retrieval option can be used with the S3 Glacier storage class to restore data. Also, restoration can be changed for the S3 Glacier storage class while restoration is in progress. The typical Time frame for data retrieval is as follows.
Retrieval option
S3 Glacier storage class
S3 Glacier Deep Archive storage class
Expedited
1-5 mins
Not Supported
Standard
3-5 hours
12 hours
Bulk
5-12 hours
48 hours
Option A is incorrect as Standard retrieval option will work for the S3 Glacier Deep Archive storage class, but it will take 3-5 hours to retrieve objects from the S3 Glacier storage class while with the Expedited retrieval option. Same data can be available in less than 5 minutes.
Option B is incorrect as the Standard retrieval option will take 3-5 hours to retrieve an object from the S3 Glacier storage class while with the Expedited retrieval option. Same data can be available in less than 5 minutes.
Option D is incorrect as the Expedited retrieval option is Not supported for the S3 Glacier Deep Archive storage class. Standard or Bulk retrieval options can be used with the S3 Glacier Deep Archive storage class.
For more information on Amazon S3 Archive retrieval options, refer to the following URL-
https://docs.aws.amazon.com/AmazonS3/latest/dev/restoring-objects.html