All About Cloud Migration Strategy

The keys to an effective cloud migration strategy are ensuring that the applications relying on that data face minimal interruption and the migration budget doesn’t get blown out of promotion.

Despite the fact that there are native services provided by the cloud providers to migrating data, these solutions may require significant restructuring of the application during a “lift-and-shift” operation or they may not be as fast, taking days or months to move the data. Here we will see cloud migration strategy. Before going ahead, let us see what is cloud migration?

Also know- Everything you should know about Anthos- Google’s multi-cloud platform.

What is Cloud Migration?

Cloud Migration

A cloud migration is when an organization moves a few or the entire of its data center capabilities into the cloud, mostly to run on the cloud-based based infrastructure provided by a cloud service provider such as AWS and Azure.

Cloud migration steps-

1. Planning-

In this planning stage it is essential to assess your environment and decide the factors that will govern the migration, for example, critical application data, legacy data, and application interoperability. It is also important to decide your reliance on data: do you have data that should be resynced regularly, data consistency requirements to meet, or non-critical data that can be migrated during the first few passes of the migration?

Deciding these things will help you with contracting a strong plan for the tools you’ll require during migration, (for example, using Azure AWS migration tools or using other strategies), distinguishing which data should be migrated and when, if the data needs any scrubbing, the kind of destination volume to use, and whether you’ll require encryption of the data both at rest and in transit.

2. Cloud Data Migration Execution-

When your environment has been assessed and a plan has been mapped out, it’s important to execute your migration. The primary challenge here is the manner by which to carry out your migration with minimal disturbance to normal operation, at the most reduced cost, and also over the shortest time frame. If your data inaccessible to users during a migration, you risk affecting your business operations. The same is valid as you proceed to sync and update your systems after the initial migration takes place.

Each workload element individually migrated should be proven to work in the new environment before migrating to another element. You’ll likewise need to figure out how to synchronize changes that are made to the source data while the migration is ongoing. Both AWS and Azure provide built-in tools that guide in AWS cloud migration and in Azure data migration, and later in this article we’ll see how NetApp users benefit from migrating with services and features that accompany Cloud Volumes.

3. After the Migration: Next Steps

When that information has been migrated to the cloud, ensure that it is optimized, secure, and easily retrievable moving forward. It also helps with observing for real-time changes to critical infrastructure and predict workload contentions. Aside from real-time monitoring, you should also check the security of the data at rest to ensure that working in your new environment meets regulatory compliance laws such as HIPAA and GDPR. Another consideration to remember is meeting ongoing performance and availability benchmarks to ensure your RPO and RTO objectives should they change.

Characteristics of a Good Migration Strategy-

Based on the complexity of the application, the migration strategy should differ for every business. These are some characteristics of a good migration strategy and they are:

  • Address long term goals like alignment between information technology and business objectives.
  • Address short term objectives, for example, decreasing hosting cost.

In a more clear clarification of the characteristics of a good cloud migration process, the following some steps must be done.

1. Having a secured cloud-

Cloud security is significant, as we share the space with total strangers in the cloud servers. SSL certificates are the best solution for cloud security. Using HTTPS is readily available, flexible and also at an affordable cost.

2. Keep your cloud secured-

Another significant challenge faced by the developers is keeping the cloud secure. Security of cloud server is a major risk. Try not to create the root access key unless it is required. Discover an industry-standard scenaria to a) loss of credentials, b) key rotation and c) how to respond to key theft.

3. Backup your cloud-

It is better to back up the cloud storage regularly. Also, test your resources even before the need arises. Put yourself on guard for an unexpected scenario. Coming up next are points to consider.

  1. Frequent backup using tools or snapshots
  2. Application’s critical component deployment across different Availability Zones
  3. Data duplication as application
  4. Dynamic IP addressing whenever restarting the design applications
  5. Monitors events constantly
  6. Responds to events in a timely fashion
  7. Failover handling
  8. Mutually attach a network interface
  9. Test the recovery of your instances for possible failures

4. Selection of hosting environment-

The cloud environment in which you will deploy your cloud application should be agile to accept the changes. The following are some of the essential features:

  1. Flexibility on vertical solutions and horizontal solutions
  2. Scalability
  3. One-click delivery
  4. Capturing usage and data bills
  5. Back up
  6. Data redundancy

Formulate a migration strategy that fits with your application datasets. Organizations have tough time migrating their data without appropriate planning. By clearing setting out your migration strategy one could save 70% of the cost spent on it.

Cloud Migration Strategy-

Cloud migration process has following steps-

a) assess b) pilot testing c) initiate migration d) move applications and e) optimize. There are phases of migration and they are: a) Migration Preparation and Business Planning b) Discovery and Planning c) Designing the Migration d) Migrating and Validating Applications and e) Operations

Let us discuss about the migration strategies. There are six migration strategies and they are the ‘6Rs’:

  1. Repurchase or Drop and Shop
  2. Rehost or Lift and Shift
  3. Replatform or Lift, Tinker and Shift
  4. Refactor or Re Architect
  5. Retire or Get rid of
  6. Retain or Revisit

Also know- Everything you should know about Multi-cloud strategy.

Rehosting or ‘Lift and Shift Migration Technique’-

Rehosting or the lift and shift cloud migration techniques is the earliest technique used in cloud migration. In simple words, taking all the data from the system and moving it to the cloud without any changes in the application code is called rehosting.

Features:

1. Simplest migration technique

2. Less time required

3. Requires less resources to execute the migration

4. Fastest technique as it doesn’t have any code modification

5. Requires less tools  

6. Easier to optimize the application when once they are running in the cloud

Replatforming or ‘Lift, Tinker and Shift Migration Technique’-

This technique needs a small alteration in the code to make it suitable for the cloud environment. It is fundamentally the same as rehosting. Following are some advantages using this technique for cloud migration and they are as follows:

  1. Creates suitable databases
  2. Better scalability
  3. With minimum code modification, we can integrate the native cloud features to the applications
  4. cost-effective solution
  5. Cloud prices are according to the storage of the database
  6. Project scope can change with the process of cloud migration
  7. Some of the AWS services are CARBS (Amazon Relational Database Services) or Amazon elastic beanstalk
  8. Save licensing costs
  9. Gain agility of the application while migrating

Refactoring or Re Architect Migration Technique- 

Refactor migration is the complete change in code to make the application suitable for the cloud environment. Hence this method is called re architect cloud migration technique. Some of the features of this technique are as follows:

  1. Overall improvement in performance and efficiency also
  2. We can specially design the application to meet the requirements of AKS and GKE
  3. It is remarking the application and architecture for the cloud-native features
  4. Boosts agility in the monolithic architecture
  5. Improves the business continuity
  6. Most expensive cloud migration strategy
  7. Tailored fit applications are created
  8. It is a complex migration process

Repurchase or ‘Drop and Shop’ Migration Technique-

It is like moving a content management service to Drupal or a customer relationship management to salesforce.com. It is moving to a different product or different service as SaaS.

Why repurchasing is the best idea to use as cloud migration for your SaaS:

  1. It is tailored to your business needs
  2. It is an efficient technique
  3. This is the fastest way to migrate 
  4. It takes the existing data and sets up the same data on the cloud with few tool’s help
  5. Lesser effort than lift and shift
  6. Continues with a new license on the cloud

Retire or ‘Get Rid of’ Migration Technique-

Any application that can possibly migrate will help you with assessing the value of product, service, or application. By understanding the least productive application you can reduce the cost while migration. Applications that are erroneous and the applications which crash can be retired. The applications which are to be decommissioned or consolidated with other applications can be retired. Some of the advantages are:

  1. Cost benefits
  2. Lessen surface area
  3. Concentrating more on other useful applications

Retain or Revisit Migration Technique-

This is also a massive migration. If you have an application that you don’t use often, at that point revisit migration is the best technique. Some  reasons are:

  1. Some of the application which businesses demand being on premises
  2. Legacy operating systems
  3. Applications that require very high performance
  4. Application that are well on existing server

Wrap up-

Many enterprises have successfully used Cloud Volumes ONTAP to help migrate their workloads and achieve storage efficiency and cost savings. If you are looking for cloud migration, consult with Solace experts. We have a dedicated team proficient in cloud computing. Connect with Solace for appropriate solutions as per your business.

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