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December 19, 2009

Data Migration: On Risk Mitigation

Filed under: Data Migration — Olga Belokurskaya @ 2:11 am

Data migration being one of the processes that are important for business, is a process implying several risks, as well. The issues that may be faced during data migration include security leaks, overrun budgets, project’s viability issues, etc.

To mitigate those risks effectively, risk-management strategy is necessary to be created on a pre-migration stage of the project. This strategy includes assessment of risks and challenges waiting ahead.
The migration plan should be created, including each phase of data migration. However, blindly following the plan would not be the right way of doing data migration. The plan should be revised and adapted to the issues discovered at each stage of the migration process.

Security issues are the most frequent reason for data loses and leaks. Very often security permissions are left behind, and important company’s data may be lost, corrupted or even stolen. Thus, data migration strategy should contain provisions for security issues.

Block-level migration is considered to be more risk-proof than file-level migration. While security settings in a file-based migration may be configured, this is possible when both source and target of data migration are situated in the same authorization domain.

Thus, there should be clearly defined what data is to be migrated, how the data will be copied, solely files, or file attributes and associated information, as well, etc. All this needs to be defined before data migration is started, and if needed, extra permissions and access levels should be created.

Surely, everything about what data is to be migrated, and the way it will be migrated should be mentioned in the documentation and discussed in details with data migration provider.

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