The One Zone-Infrequent Access Storage Class The One Zone-Infrequent Access Storage Class Overview Amazon S3 team introduced the new low-cost storage class for re-creatable data, such as secondary copies of your backups or for data that is already replicated in another AWS Region for compliance or disaster recovery purposes. The new S3 One Zone-Infrequent Access (ONEZONE_IA) storage class offers the same high durability (99.999999999%), low latency, and high throughput of S3 Standard or Standard-IA and inherits all of the existing S3 features including security and access management, data lifecycle policies, cross-region replication, and event notifications. With S3 One Zone-IA, you can store infrequently accessed data within a single Availability Zone at 20% lower cost than S3 Standard-IA. You can find more details in the official AWS blog. Below we will describe how to take advantage of this new storage class with S3 Browser.
To apply the One Zone-IA storage class for existing files 1. Start S3 Browser and select the file(s) and/or folder(s) you want to change storage class for. 2. Click Files, Change Storage Class to, ONEZONE_IA 
How to apply the One Zone-IA storage class for already uploaded files 3. S3 Browser will update storage class for selected files and refresh files list.
To apply the One Zone-IA storage class for an entire Bucket 1. Start S3 Browser and select the bucket you want to change storage class for. 2. Click Buckets, Change Storage Class to, ONEZONE_IA 
How to apply the One Zone-IA storage class for an entire bucket 3. S3 Browser will apply selected storage class for all files inside the bucket. If your Amazon S3 Bucket contains a lot of files, this operation may take a while. You can significantly increase performance with S3 Browser Pro. It allows you to increase the number of concurrent working threads and thereby process your files much more faster!
Automatic transition to the One Zone-IA storage class You can configure automatic transition to the One Zone-IA storage class via Lifecycle Rules, please check the steps below for detailed instructions. 1. Start S3 Browser and select the bucket you want to configure lifecycle rules for 2. Click Buckets, Lifecycle Configuration 
Select the bucket and click Buckets, Lifecycle Configuration.. Or use the CTRL+I keyboard shortcut. The Bucket Lifecycle Rules dialog will open: 
Bucket Lifecycle Configuration dialog Click Add, the New lifecycle Rule dialog will open: 
Transition to the One Zone-IA storage class via lifecycle rules 3. Specify the Prefix - choose the folder if you would like to configure transition to One Zone-IA for the particular folder or leave this field empty to apply the One Zone-IA storage class for entire bucket. 4. Switch to the Actions for current versions tab 
Add New Lifecycle Rule dialog - the Actions for current versions tab 5. Add new transition to the ONEZONE_IA storage class. 5.1 (Optional) Configure the same for noncurrent versions if you would like to transfer object versions for versioning-enabled buckets 6. Click Add new rule to add new rule into the list and Save to apply changes.
To automatically apply One Zone-IA during uploading You may configure S3 Browser to automatically apply the ONEZONE_IA storage class for files during uploading. The Storage Class directive is specified as part of the upload request, so no extra requests and no extra charges involved to upload files directly to ONEZONE_IA. This can be configured via Default Storage Classes. 1. Click Tools, Default Storage Classes.. 
Click Tools, Default Storage Classes The Storage Classes Rules dialog will open: 
Default Storage Classes dialog. 2. Click Add, the Add new Storage Class Rule dialog will open: 
Add new Default Storage Class dialog 3. Specify the Bucket and optional file mask and desired Storage Class. 4. Click Add and Save changes
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