Virtualization has (arguably) been one of the biggest breakthroughs in Information Technology in the last decade or so. The ability to share various IT resources like servers, storage devices, operating systems etc. over multiple standalone environments, and that too at the same time, has allowed maximized resource utilization and added flexibility while reducing costs.
As we move towards the era of smart cities, interconnectivity will become more and more important, and virtual environments will play a crucial role in creating dependable networks. Authorities can use this technology to setup a consolidated IT hub with all the servers and support devices at one place and deploy guest OS for various applications for public security, traffic management etc. It will help in better co-ordination and data consolidation.
Virtual Environment Setup
While constructing a virtualized environment can vary greatly according to the requirements, the basic setup remains the same. There is a core system of servers, like file servers, database servers, web servers, print servers etc. Together they are consolidated into a host server or the host OS. This then powers all guest OS, which are virtual replicas of the system. They use all the host resources but work as independent systems.
What happens when host server fails?
It must be clear from the above explanation that a host server is like the heart of a virtualized system. Its failure practically brings the entire network of systems to a standstill. Scarily, the damage can actually be worse than a complete system breakdown. If an application was running on the guest OS at the time of host failure, there is a real risk of the application failure. Similarly, there can also be data disk, network, and network failures.
How disaster recovery software helps?
Don’t let the host failure risk scare you away from using virtualized environments. All you need is good software to safeguard your systems.
A disaster recovery system minimizes the damage caused by the host failure. It does that by instantly shifting all the guest systems to a standby host server. This ensures the undisrupted functioning of virtual machines and also prevents component failures. Some recovery systems may use other preventive methodologies but standby servers are the most commonly used and trusted mechanism.
NEC’s ExpressCluster X
NEC is a leading technology solutions company in the world. Their disaster recovery system ExpressCluster X is one of the most advanced systems in the market. Besides providing primary security through one of the fastest and most reliable standby host server shift, it offers additional features like application level protection.
Many IT companies offer their versions of virtual environment systems. NEC’s ExpressCluster X supports almost all prominent names.
To summarize, virtualized environment is a great IT tool. Virtualization’s only major drawback is the reliance on host servers and the risk of multi-systems damage in case of its failure. However, this can be prevented by using good disaster recovery tool. NEC’s ExpressCluster X is one such software that does much more than just ensuring continued operations of rest of the systems.
Learn how NEC's ExpressCluster X can help with fast recovery and continuous protection of your critical applications and data.
Wednesday, 30 Sep 2015