Migrating a high-volume database like Instabug's crashes table requires careful planning and execution, especially when dealing with mission-critical data. The team opted for partitioning the table on the "deleted_at" column to enable MySQL to drop partitions instantly. They explored various migration tools, including pt-online-schema-change, fb-osc, Large Hadron Migrator (LHM), and gh-ost. After evaluating these options, they chose gh-ost due to its triggerless design, which eliminated lock contention issues. However, they encountered some challenges with gh-ost, such as not saving the latest migrated chunk and slow migration, which were addressed by editing the code. Ultimately, the team successfully migrated their database using gh-ost, ensuring a reliable and efficient solution for their high-volume data needs.