The concept of virtualization has been around since mainframe days in the late 1960s; when IBM invested a lot of time and effort to create an accommodate computing resources sharing across large groups through a process called time-sharing. The aim of using this model is to increase the efficiency of both the users and the expensive resources they share. As time passed, virtualization becomes more sophisticated and other services like cloud computing have also emerged. So a lot of businesses tried to start integrating this solution into their operations.
Apparently, virtualization brings several benefits to a business. It can enhance IT agility, flexibility, and scalability while creating significant cost savings. We can list some of the important advantages of virtualization systems as below:
- decrease operating costs
- Minimized or eliminated downtime
- make data center management easier
- Greater business continuity
- make the disaster recovery procedure faster
However, it has got some challenges that every company may face while using virtualization. Remembering these difficulties might help you prepare yourselves to overcome unexpected issues.
At times, the way virtualization partitions can perform in different situations varies a lot. At some points, it can operate really well; However, there are some states that they do not supply adequate resources that are needed by users. Resource distribution challenges often happen early in the transition to virtualization and can be solved with the provider’s help to ease these issues moving forward.
Comprehensive assessment of what the company might need is pivotal; So a virtualization administrator should consider all probabilities and design appropriate service. If you do not dedicate a considerable amount of time and effort to investigate your problems that virtualization represents solutions for them, you will not make the most out of its potentials.
Software License Compliance
Software licensing is one of the controversial challenges that you may face with virtualization; Because there is no way to deploy VMs without buying licenses for the operating system (OS) and applications running within that VM. Software vendors are updating their licensing rules (like using hardware keys) to tackle virtualization loopholes and detect the presence of a VM. Without enforcing policies, software publishers have no control over the license and therefore their income. Retaining a licensing compliance officer to track software licensing (for instance, by using a unique FQDN locking) and offer guidance for software use, which includes virtualization systems, may be suitable.
There are no limitations to create and configure VMs. This ability in virtualization could lead to problems like excessive virtual machines for a company. At first glance, VM sprawl might seem innocuous, but it can exacerbate hardware resource distribution problems. In this scenario, you will face some VMs have been allocated resources that are not used; On the other hand, there are lots of VMs can not function properly because of fewer resources. Companies can avoid VM sprawl by sticking to capacity planning tools or Creating a library of standardized VM templates.
Virtual systems can be easily compromised when users are not able to maintain their passwords and files secure. Meanwhile, the usual defense–firewalls, security devices and such can not fit virtual systems. Nonetheless, the isolation of each VM by the system administrator can reduce security problems and help keep VMs more secure and hard to penetrate and ravage.
There is a big challenge around virtual server operations management because when people are likely to use virtual machines and the demand rises, it is more difficult to distinguish performance issues because everything is located in a virtual environment. Additionally, because you have abstracted an environment, it is impossible to completely diagnose problems and monitor performance. In other words, if you are not able to see all the major elements, you can not fix the problems.
Some people believe the costs of administering a virtual system is nearly equal to the amount of activity that is required to manage the old physical servers. You have got to follow the same procedure to initially deploy, patch, secure, update and at some point retire VMs. Also, you will have a huge amount of users running your server instances, because virtual machines are free. So it all comes down to economic barriers that prevent some companies from running virtualization in their systems.
The process of backing up and preserving data is really crucial in every business. Since there is no actual hard drive on which data such as frequent software and OS updates can be saved on, accessing to the backup files can be really complicated sometimes. However, there is some built-in software like “Windows Server Backup” and other appliances can make this process easier and allow backups to be kept all in one place for better accessibility.
Implementing virtual systems are promising, yet very challenging. First, it is really important to figure out what the company needs and then try to utilize virtualization. While virtualized solutions require less management than their old counterparts, they still need a massive amount of control and manipulation and you will need people to help you. Although business owners keen on using different types of virtualization, there are still some challenges they should be aware of and try to deal with them.