Database migration best practice - NetApp

For IT managers, data migration has become one of the most routine—and challenging—facts of life. Workload balancing, technology refresh, server and storage consolidation, data center relocation, data classification, and mergers/acquisitions are all drivers to move data from one storage device to another on a regular basis. You’d think that any operation performed routinely would become easy. But not so. Migration—moving data from one device to another (especially as the capacity of storage devices continues to grow) and then redirecting all I/O to the new device—is an inherently disruptive process. With the increase in the percentage of mission-critical data and the proportionate increase in data availability demands, downtime—with its huge impact on a company’s financial bottom line—becomes unacceptable. In addition, business, technical and operational requirements impose challenging restrictions on the migration process itself. Resource demands—staff, CPU cycles, and bandwidth—and risks—application downtime, performance impact to production environments, technical incompatibilities, and data corruption/loss—make migration one of IT’s biggest challenges.
Since the majority of storage systems purchased by customers is used to store existing—rather than new—data, getting these new systems production-ready requires that data be copied/moved from the old system to be replaced to the new system being deployed. As the services arm of one of the industry’s leading storage companies, NetApp Professional Services has therefore developed a core competency in data migration, fine-tuning its migration methodology over time, with each migration services engagement delivered. Whether the migration is a same vendor system upgrade (for example, NetApp FAS940 to NetApp FAS3050) or a vendor take-out (for example, EMC Celerra to NetApp FAS3020), whether the migration is performed by internal IT or an external services provider, the migration methodology is the same.
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