Amazon S3: Moving (transitioning) objects between Storage Classes.

Moving data between Amazon S3 storage classes is a common practice to optimize costs as data ages or access patterns change. There are three main ways to move objects between S3 storage classes:

 1. Lifecycle Configuration Rules (Automatic)

twtech can define lifecycle policies to automatically transition objects between storage classes based on object age or creation date.

 Example Lifecycle Transitions:

# yaml

Transition:

- Day 30 → S3 Standard-IA

- Day 90 → S3 Glacier Instant Retrieval

- Day 180 → S3 Glacier Deep Archive

 How to Set Up:

• AWS Console: Go to S3 bucket > Management > Lifecycle rules.
• AWS CLI:

# bash

aws s3api put-bucket-lifecycle-configuration --bucket twtech-s3bucket \

--lifecycle-configuration file://lifecycle.json

• Example lifecycle.json:

#  json

{

  "Rules": [

    {

      "ID": "TransitionToGlacier",

      "Status": "Enabled",

      "Prefix": "",

      "Transitions": [

        {

          "Days": 30,

          "StorageClass": "STANDARD_IA"

        },

        {

          "Days": 90,

          "StorageClass": "GLACIER"

        }

      ],

      "NoncurrentVersionTransitions": [ ],

      "Expiration": {

        "Days": 365

      }

    }

  ]

}

 2. Manual Movement (One-time or Ad Hoc)

Use this when you need to manually move a specific object or batch of objects to a different class.

 AWS CLI:

# bash

aws s3 cp s3://twtech-s3bucket/twtech-object.txt s3://twtech-s3bucket-crr-replica/twtech-object.txt \

--storage-class GLACIER --metadata-directive REPLACE

 S3 does not allow in-place class changes. twtech must copy and overwrite the object to change its storage class.

 3. Upload with Storage Class Specified

twtech can specify the desired storage class at upload time.

 AWS CLI:

#  bash

aws s3 cp twtech-file.txt s3://twtech-s3bucket/ --storage-class STANDARD_IA

 Available Storage Classes for Transitions

Storage Class	Notes
STANDARD	Default
INTELLIGENT_TIERING	Auto-tiering based on access
STANDARD_IA	Infrequent Access
ONEZONE_IA	Lower-cost IA in one AZ
GLACIER_INSTANT_RETRIEVAL	Archive, fast access
GLACIER	Archive, flexible retrieval
DEEP_ARCHIVE	Cheapest, slowest access

 twtech Best Practices.

• Use Intelligent-Tiering for unpredictable access.
• Use Lifecycle rules for predictable aging data.
• Use tag-based policies to transition only selected objects.

Project: Hands-on

How twtech creates its s3-buckets then edit storage class: (Move or transition objects from one storage class to another)

Create a new bucket: twtech-s3-class-transitioning

Assign name: twtech-s3-class-transition.

Created in any region of choice: us-east-2(Ohio)

Create bucket in any region of choice: us-east-2(Ohio)

Select object to Upload to the bucket: twtech-logo4

Configure storage class for object to upload: twt-logo4.jpg

Navigate to properties: To configure the choice of storage class desired for the object.

Select the preferred storage class: standard storage class.

Go to the bucket to access object: twtech-s3-class-transition

The object indicates a storage class: Standard.

How  twtech may change the storage class of its objects in the bucket by editing properties of the object: from standart to

Select the  object to edit the properties of the storage class and click open: twt-logo4.jpg

Navigate to the section:  storage class to edit.

From standard to: One Zone-IA (meaning this object can only be stored in one zone only)

From:

To:

Save changes:

Return to the bucket and Verify that the storage class has actually been changed: from standard to One Zone-IA

Yes.

How twtech creates lifecycle rule to  move (transition) objects between search classes: by creating lifecyle rules.

Go to:  bucket management tab.

Create lifecycle rule: twtech-lifecycle-rule

Create lifecycle rule: twtech-lifecycle-rule