Costs to implement physical consolidation are low, and consist of network enhancements to support the centralization, datacentre build-out to support the consolidation, and physically moving the servers. Cons: The risks are performance degradations due to poor network planning and business resilience risks by having all of the server assets in "one basket," particularly if the datacentre does not have adequate recovery plans.
Typically, fewer, smaller applications that peak at different times drive the highest consolidation.
Because the system manages workloads and partitions, administration and support are minimized.
The team can change the partitions to allocate more resources as needed for workload changes, as opposed to managing moves, adds and changes physically on multiple "islands" of individual servers.
Pros: Logical consolidation on a shared server can save 40% or more of overhead headroom, and a proportional decrease in server assets.
It's one of the most effective ways to lower TCO of a company's datacentre.
Typically performed using one of the four strategies highlighted here, server consolidation methods can be applied independently or simultaneously.
Migrating the operating system to a newer version enhances availability, security, management features and performance, and provides better upgrade options.
Cons: If the proposed system for re-hosting is not compatible with the prior systems, the application may require porting to another platform, custom code rewrites, procedures and data migration. Logical consolidation Individual servers are often configured into individual server "islands" with 40% or more headroom to allow for changes in workload and growth.
Because the analysis is complex, internal IT teams should consult with independent analysts and performance benchmarking sites (such as org and put vendors to task (with requisite scrutiny), to help propose and analyze current opportunities and various consolidation options.
Comparing the solutions' TCO and service levels head-to-head with a TCO analysis tool can provide the team with visibility into potential savings, and provide justification needed to empower the business to make the right decision.
Pros: Depending on the age of a legacy system, expensive support and maintenance contracts can be eliminated.