What is Server Consolidation?
Server Consolidation is process for reducing the number of physical servers by consolidating onto fewer servers. This can be easily understand by following image.
What are the benefit for Server Consolidation ?
There are aspects of server consolidation and several ways in which consolidation can result in tangible benefits, including a reduction in systems management costs and overhead. Some areas are:
- Streamlined, centralized systems management: this results in having fewer interfaces and management applications that need to be addressed when managing business critical applications.
- By reducing the total number of servers, applications can be deployed in fewer servers, which are configured to attain higher levels of availability. For example, an application can be migrated from a larger number of smaller servers to a larger server, which has various hardware options (redundant processors and disk drives, for example) and software features (more robust systems management products) which contribute to an overall higher level of availability.
- In consolidating onto fewer, standard platforms, one benefit is the reduction of disparate platforms, which require your operations staff to be knowledgeable on a variety of products, hardware, and operating systems. By consolidating onto a uniform, standard set of platforms, the overhead required to manage disparate systems can be removed.
- By reducing the number of areas in which failures can occur, by reducing the total number of servers, your operations staff will find that they can spend less time fixing problems, and more time on strategic issues.
- Server consolidation also includes the migration of servers into one geographical location. This can reduce your operations overhead in that your operations staff will no longer need to travel to multiple geographical locations to perform troubleshooting and routing server maintenance; consolidating into fewer sites can help streamline processes.
What are the Types of Server Consolidation ?
- Logical – Manage multiple servers and applications via a reduced number of interfaces. One example is the use of Application Center, which enables IT staff to manage multiple servers (such as in a web farm) as one logical server. Storage management can also be consolidated logically, which results in managing a large number of disks via one management interface. Logical consolidation results in a reduced number of interfaces, which can potentially enable your staff to remotely manage servers as though there were physically a lower number of servers.
- Homogeneous – Combining a single application which resides on multiple servers onto one server
- Heterogeneous – Combining multiple applications from different servers onto ones server
- Geographic – Moving servers into one geographical location