Benefits and risks to upgrades and migrations
This topic explains the benefits and risks associated with migration and upgrade:
In all scenarios, BMC recommends that you install new 11.0 Integration Services. This means you must allocate hardware resources for the new Integration Services, regardless of whether you upgrade or migrate.
Migration pros and cons
The following table identifies the pros and cons of migrating to the latest version.
The following are risks identified with migrating instead of upgrading:
- The requirement to run parallel systems can result in confusion due to users having to view trends in multiple systems.
- A migration can extend the time required to get to Infrastructure Management version 11.0. A complete migration requires complete configuration of the 11.0 environment including Infrastructure Management policies, and upgrading PATROL Agents before they can be integrated in the new environment. This can extend the time required to complete the project so that all agents report into the new 11.0 environment.
This risk exists for all scenarios when you consider “full Infrastructure Management 11.0 functionality”. However, with an upgrade, existing older PATROL Agents report into Infrastructure Management 11.0 immediately after the upgrade, even though “full Infrastructure Management 11.0 functionality” is not in place for them.
Upgrade pros and cons
The following table identifies the pros and cons of upgrading to the latest version.
Data differences is be retained for historical data after the agents are upgraded. These differences exist in the same Operations Console and it will not be readily apparent to users why the differences occur. This may result in confusion and excessive support calls unless the users are well trained to be aware of the differences.
The following are risks related to upgrades from all versions except where otherwise specified:
- Poor perception of the new solution. The significant change between older versions and Infrastructure Management 9.6 results in a variation of the functionality, capability, and behavior which is likely to cause confusion for users. Users may also perceive issues in Infrastructure Management 11.0 that are actually related to data collected before the upgrade and/or before upgrading agents.
- Improper decisions. Visualization might be confusing to users considering old versions of KMs compared to 11.0 KM versions being displayed, as upgraded and new Infrastructure Management 11.0 policy-controlled agents join the Infrastructure Management 11.0. This can result in improper decisions.
- There might be altered event behavior associated with event management cell Knowledge Base configuration differences that were not accounted for.
- Downtime associated with upgrading the Infrastructure Management Server(s), especially if upgrading from version 8.5, due to multiple iterations in the upgrade process.