Migration Deployment Scenarios - Hardware Migration - Disadvantages
disadVantages: • While it is arguable whether the risk of the combined effort will be less or greater than the sum of the risk of the two separate efforts, it is undoubtedly larger than that of a single type of migration and may therefore surpass a desired maximum threshold. • When two types of migrations are combined, there is less isolation in changes. Therefore, the root cause of a potential problem will be harder to discover. By the same token, It will be more difficult to attribute any performance gain/loss to one migration versus the other. Regardless of whether the hardware migration is required or optional, when and if it is performed there is an opportunity to redesign the physical deployment architecture of the servers in a way that can lead to cost savings and various improvements. There are four primary deployment scenarios that are common to migrations: consolidation, dispersion, aggregation, and cloud migration. These scenarios are not mutually exclusive and can be combined in a large-scale migration to achieve the right balance of functional and operational characteristics for specific workloads.