Cloud Solutions and Virtualization

Data / System Migration

Data migration is the process of transferring data between computer storage types or file formats. It is a key element for any system implementation, upgrade, or consolidation. Typically data migration occurs during an upgrade of existing hardware or transfer to a completely new system. But it can occur for variety of other reasons, for examples: replacing or upgrading servers or storage equipment, moving data to third-party cloud providers, website consolidation, infrastructure maintenance, application or database migration, software upgrades, company mergers or data center relocation. The migration process includes making sure the new environment's features are put to good use, old settings do not require changing and that current applications continue to work. Companies can conduct small-scale migration projects that move a single system, or take on large-scale migration projects that involve many systems, new applications or a redesigned network. Data migration is usually performed programmatically to achieve an automated migration, minimizes human intervention and application downtime and enhances migration speed.

Types of Data Migration

Storage Migration

Storage Migration is a function that migrates the volume data from an old storage system to volumes in a new storage system without using a host in cases such as when replacing a storage system. The process involves moving blocks of storage and files from one storage system to another, whether it is on disk, tape or the cloud. There are numerous storage migration products and tools that help smooth the process. Storage Migration provides two data migration methods: offline and online. With offline, operations must be stopped in the storage systems during a data migration and with online, the data can be migrated while performing operations.

Database Migration

Database migration is done when there is a need to change database vendors, upgrade the database software or move a database to the cloud. In this type of migration, the underlying data can change, which can affect the application layer when there is a change in protocol or data language. Data migrations in databases deal with modifying the data without changing the schema. Some key tasks include assessing the database size to determine how much storage is needed, testing applications and guaranteeing data confidentiality. Compatibility problems can occur during the migration process, so it is important to test the process first. Database migration projects can be hard, but the benefits of migrating your database to the cloud are significantly greater than the challenges migrations can present. Through diligent preparation, we can help you make these challenges predictable and less painful for your organization.

Application Migration

Application migration is the process of moving an application program from one environment to another. It can occur when switching to another vendor application or platform. This process has its own inherent layers of complexity because applications interact with other applications, and each one has its own data model. Migrating an applications can be complicated because they are not designed to be portable and there are bound to be differences between the original and target environments. Management tools, operating systems and virtual machine configurations can all differ from those in the environment where the application was developed or deployed. Successful application migration may require the use of middleware products to bridge technology gaps.

Cloud Migration

Cloud migration is the process of moving data, applications or other business elements from an organization's onsite computers to the cloud, or moving them from one cloud environment to another. Cloud migration is a major technology trend, as the cloud provides on-demand flexibility, scalability and reduction of the money a company spends to buy on-premises infrastructures. Public cloud providers offer a variety of services for storage, database and application migrations. In any case, successful migration to a service provider’s environment may require the use of middleware, such as a cloud integration tool, to bridge any gaps between the vendor’s and the customer’s (or other vendor’s) technologies. Cloud migration requires careful analysis, planning and execution to ensure the cloud solution's compatibility with organizational requirements.

Factors to consider during a data migration project include:

  • How long the migration will take.
  • The amount of downtime required.
  • The risk to the business due to technical compatibility issues, data corruption, application performance issues, and missed data or data loss.

Data Migration vs. Data Integration

Data migration is not to be confused with data integration; they differ in a number of ways. Data migration involves moving or copying data from one system to another, or one environment to another. The process is undertaken when new systems or storage mediums come into play and enterprise companies need to take all of their existing resources and move them into a different environment. Data Integration on the other hand, deals with the flow of data among various applications and systems. It is a combination of technical and business processes used to combine different data from disparate sources in order to turn it into valuable business insight.

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