Note:

Configure Object Storage cross-region replication for Disaster Recovery

Introduction

Oracle Cloud Infrastructure Object Storage is an internet-scale, high-performance storage platform that offers reliable and cost-efficient data durability. The Object Storage service can store an unlimited amount of unstructured data of any content type, including analytic data and rich content, like images and videos.

Object Storage is a regional cloud service. Buckets are logical containers created in a tenancy inside a region in which customer data is stored as objects.

You can store a copy of all objects from one bucket in another bucket located inside a different region for redundancy. This copy can help you recover from a disaster that could affect an entire cloud region. Cross-region object replication provides protection from a regional outage.

Cross Region Replication

Objective

To configure Object Storage cross-region replication for Disaster Recovery.

Prerequisites

Configure the IAM policies

  1. Log in to the OCI console and click Identity, and then click Policies.

  2. Create a new policy and add the following statements:

    Required IAM Policies

    In this tutorial, we have configured the IAM policies for ‘oci-oss-pms’ group in the compartment ‘ocioss’:

    Allow group oci-oss-pms to manage buckets in compartment ocioss
Allow group oci-oss-pms to manage objects in compartment ocioss
Allow service objectstorage-us-ashburn-1 to manage object-family in compartment ocioss
Allow service objectstorage-us-sanjose-1 to manage object-family in compartment ocioss

Task 1: Configure Object Storage cross-region replication

  1. Go to the source bucket (for example, media-bucket) and click Create Policy as shown in the following image.

    Source Bucket

    Note: The destination bucket (for example, bkp-media-bucket) has to be created in the destination region (for example, us-sanjose-1) before setting up replication. Setup replication policy on source bucket by selecting the destination region and bucket to replicate to and then click Create.

  2. Select the Destination Region and Destination Bucket for replicating objects and click Create.

    Replication Policy

    Note: In the Bucket Information tab, the Replication field displays Enabled for the source bucket in US East (Ashburn) region.

    Source Replication Enabled

  3. In the US West (San Jose) region, go to the Bucket Information tab and verify if the Replication is Enabled on the destination bucket as well :

    Destination Replication Enabled

    Note: Objects uploaded to the source bucket after policy creation are asynchronously replicated to the destination bucket. The time taken for objects to be replicated depends upon the number and size of objects being uploaded or deleted in the source bucket, the available bandwidth between regions, etc.

Task 2: Test Object Storage cross-region replication

  1. Upload some objects to the source bucket (media-bucket) in US East (Ashburn) source region:

    Upload Objects

  2. Navigate to the destination region and bucket and confirm that the objects uploaded to the source bucket have been replicated in the destination bucket (bkp-media-bucket) in US West (San Jose) region.

    Note: It can take some time for object replication to be triggered and completed.

    Replicated Objects

Next Steps

With this configuration in place, you can have the application active in the primary region with a read-write bucket storing objects. The objects are replicated by OCI Object Storage to the secondary region read-only bucket, where the application can be passive and synchronizing with the primary.

In case of a disaster that impacts access to source bucket, the data replicated to the destination bucket can be accessed for business continuity.

Acknowledgments

Author - Ashutosh Mate (Sr. Principal Solutions Architect)

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