| Service and Solution → Centers of data analysis → Virtualization and Server Consolidation |
Consolidation of computing resources by server virtualization allows dynamically distribute resources between different applications and provide necessary service level.
Server virtualization solves the following problems of server power capacity:
- Complex support and control over multiple heterogeneous servers;
- Scarcity of physical servers;
- low scalability of physical servers;
- Impossibility of dynamic distribution of computing powers;
- Necessity of more complex engineering infrastructure.
Virtualization technology is applied for logical consolidation of infrastructure, for minimizing idles in business processes and operative restore after emergency situation, as well as in systems development and software testing.
Application of virtualization means allows (according to VMware data):
- 50-70% increase in effectiveness of hardware resources;
- 40% decrease for servers and software purchases;
- 50-70% decrease in operation expenses.
THE MAIN BENEFITS OF VIRTUALIZATION:
Increase effectiveness of hardware exploitation
Generally, servers are 15-20 loaded. The use of several virtual servers on one physical will let to increase distribution of resources and save financial resources on purchases of additional hardware.
Decrease expenses when updating hardware
When updating physical server or add hardware resources it is not necessary to install and configure software. Virtual machine copies to the new server and continue its work.
High accessibility
Reservation of virtual machines and their restore take much less time than regular procedure. Besides this, back up copy of virtual server can be started on any other physical server right after the first one goes down, what minimizes the chance of idling. This option replaces classic execution of fail-safe clusters in situations when software does not support work in standard cluster environment.
Improved manageability of server infrastructure
For virtual environments, as well as for physical, there are means that help to manage virtual servers virtually, ensure equal distribution of workload and perform migration procedures of virtual machines in operation environment.
Decrease of exploitation expenses
Centralization and simplification of virtual servers management decreases number of routine tasks from service personal.
For big data centers, where infrastructure expenses include power supply (power supply, cooling) and site renting, economy plays a big role. Concentration of several virtual server on one physical helps to decrease all these expenses.
