Server Consolidation Step 3: Capacity/Demand Management March 11, 2008
Posted by Brad Harris in Data Centers, Disaster Recovery and Business Continuity, Enterprise Architecture, I.T. Optimization, Information Technology, Server Consolidation.Tags: consultant, Enterprise Architecture, Information Technology, ITIL, Server Consolidation
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Once an accurate inventory of resources and workloads has been taken, the organization must begin to track the utilization of existing resources and the resource consumption of existing workloads. This is necessary so that workloads may accurately be match to target platforms for consolidation.
When tracking utilization, the staff should be sure to monitor for a long enough period to ensure cycles of peak and valley processing periods are included. The monitoring period should include, for example, year-end processing cycles as well as any other business specific events which may have an positive (or negative) effect on resouce requirements.
Once the Inventory and Capacity items have been completed, the organization may begin the analysis required to begin matching workloads to target consolidation platforms. Several factors should be considered. Not only should average workload resource requirements be considered, but prime-shift vs. off-shift changes in requirements should also be considered when choosing workloads for co-hosting. Mixing of production, test and development workloads on the same hardware platform should also be carefuly considered as these often have very different service level requirements. When possible, workloads sharing the same consolidation platform should require similar service, availability and security levels.
At this point, one must also begin to consider the technology being used to facilitate consolidation as this will have some level of influence on the level of resource sharing and consolidation which may be accomplished. This will be discussed with more detail in the next post.
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Copyright © 2008, Innovative Technology Management Solutions. All rights reserved
Server Consolidation Step 2: Workload Inventory February 19, 2008
Posted by Brad Harris in Data Centers, Enterprise Architecture, I.T. Optimization, Information Technology, Server Consolidation.Tags: consultant, Enterprise Architecture, Information Technology, ITIL, Server Consolidation
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Step Two : Workload Inventory
The second step in a server consolidation initiative should be an accurate and comprehensive workload inventory. A complete workload inventory should include detailed information on the following attributes :
Applications Hosted – A detailed list of applications hosted on targeted servers must be completed. This list should include any dependencies such as OS verions, hardware requirements, storage, data dependencies, etc.
End Users – The end user base for an application must be understood including the business functions/processes supported.
Service Level Requirements – One must understand in detail the business requirements which drive service levels for the workload. For example, Is the application required to be available 24×7x365 or only 8-5, M-F?
An accurate view of current capacity and demand on that capacity is important in order to make informed decisions regarding consolidation. This information should be used to group various workloads into four categories according to their suitability for consolidation: 1) server co-hosting, 2) application co-hosting, 3) virtual hosting, 4) not a candidate.
Since server consolidation is just like any other architecture initiative, requirements analysis is of the utmost importantce. This work of workload inventory is just that – the gathering of detailed requirements for the final solution.
To learn more, visit http://www.innovativetmsolutions.com
Copyright © 2008, Innovative Technology Management Solutions. All rights reserved
