From certain points of view, data migration seems puzzling and difficult, but no one doubts its necessity. With the increasing pace of technological change in today’s business environment, all companies which operate on data will have to update their systems, applications, and platforms at some point to remain competitive. It's a natural situation which stems from the fact that not only technology systems are changing, so is business.
There are two different approaches to data migration. One is reflected by all-in-one migration, migrating data as fast as possible within a pre-determined system downtime. The other, much more sensible approach, is a systematic approach. The gradual migration allows for the data migration to be held in parallel with regular work of company employees and systems.
The different approaches:
The Systematic Migration
This approach seeks to migrate large amounts of data without completely shutting down a system, operating only within selected areas so that all others can be accessible during migration. Employees keep continuous access to data, there are no glaring interruptions, and no system downtime is required. While it is the longer migration of the two, you heavily increase your chance for final success.
Properly prepared data migration begins with the deep analysis of needs and requirements. While every situation will be unique, a gradual movement from one system to another combined with incorporation of new platforms will always increase the chances of success.
This approach involves shutting all applications and databases down—temporarily interrupting work and putting all force into the data migration. While it makes for shorter time of actual migration, the risk involved typically doesn’t outweigh the reward. You have one chance to implement the new system, which poses a risk and could ultimately be a major setback for your business.
It's imperative to establish which approach best suits your business, employees, and complementary applications before any migration is carried out.