VDC, or Virtual Data Center, is a fairly new term — not everyone working in technology is familiar with it. VDC services are not yet widespread either, with few providers currently offering them in Vietnam. In this article, HITECHCLOUD explains what a VDC is and why businesses need one.
What is a VDC?
VDC stands for virtual data center. A VDC is a set of cloud resources that lets a business store and process data online, removing the need to build and maintain an on-premises data center. A VDC works much like a conventional physical data center, providing the compute capacity for application workloads and business operations.
The main components of a virtual data center
A virtual data center comprises the following main components:
● Virtual machines (VMs): a physical computer emulated in software on a hypervisor. Each VM has its own operating system, applications, and virtual hardware such as CPU and RAM.
● Virtual networking: virtual networking is how virtual machines in a VDC communicate with each other and with external networks. It comprises virtual switches, routers, and load balancers.
● Storage: storage in a VDC can use solutions such as SAN (storage area network) and NAS (network-attached storage). These provide fast, secure data storage and access.
● Hypervisor: the core of a VDC. Virtual machines can run on one physical server thanks to the hypervisor, which lets VMs share the hardware resources.
● Resource management: management tools monitor and optimize resource use within the VDC. This covers bandwidth, CPU, memory, and storage management, to keep performance at its best.
● Security systems: security in a VDC includes firewalls, intrusion detection and prevention systems (IDPS), and access control. These protect the VDC from unauthorized access and network attacks.
How does a VDC work?
A VDC works by abstracting computing hardware resources such as servers, storage, and networking, and virtualizing them within a user management console. From there, users can provision and manage their virtual machines, storage, and network resources.
With a VDC, a business invests less in physical infrastructure and its associated costs, which raises margins or frees budget to invest in more transformative technology.
How does a virtual data center differ from a traditional data center?
On cost
Compared with a traditional data center, a virtual data center requires lower capital investment. Businesses otherwise have to pay for server hardware, network hardware, and running costs, as well as employ staff to monitor it - a significant financial burden.
By contrast, storing data in a virtual data center means using third-party infrastructure, which saves considerably compared with the traditional model. A virtual data center also lets users make more efficient use of resources.
On accessibility
A traditional data center has an accessibility advantage over a virtual data center, since it lets users choose and customize equipment to suit their needs. That also makes it easier to change equipment later.
On the other hand, a virtual data center can present accessibility problems when users have no internet connection, leaving remote data unreachable. For some users this is a drawback. In addition, when an incident occurs, users may have to contact the cloud provider, which reduces their ability to resolve problems independently.
On security
Unlike a traditional data center, where a business needs to employ security staff, a virtual data center lets users protect their own data. Users have full control over data and devices, which improves safety and security because only specific people can access the system.
A virtual data center can, however, carry more risk, since anyone with an internet connection is a potential intruder. In practice, some cloud providers do not give enough attention to protecting user data. Choosing between the two types of data center therefore calls for careful consideration of security and data governance.
On scalability
Setting up a traditional data center costs more and takes longer than a virtual data center. Scaling resources also incurs additional cost. Scaling in a virtual data center, by contrast, is easier and more convenient.
Users do not need to invest in hardware up front and can scale quickly. Virtual data center providers offer a range of flexible plans to meet different needs.
The benefits VDC delivers
Flexible and easy to scale
Cloud resources give a virtual data center (VDC) far greater adaptability than a traditional data center. Adding and removing virtual components is simple, inexpensive, and fast in ways physical facilities cannot match. These advantages matter for accelerating release cycles, shortening project turnaround, and reducing time to market for new products and services.
With a clear understanding of VDC, developers can deploy public and private catalogs from virtual machine templates, and create and remove virtual machines quickly and conveniently. They can also build and run virtual applications (vApps) with the fast deployment and flexibility of virtual machines, which significantly improves overall operational efficiency.
Fast resource provisioning
Provisioning new hardware in an on-premises data center typically takes weeks, covering procurement, configuration, delivery, and installation of each component. A virtual data center (VDC), by contrast, lets new components be deployed in minutes. IT administrators can quickly deploy virtual servers and desktops from preconfigured images, from a master template, or from a clone of an existing virtual machine.
A VDC supports agile and DevOps practices well thanks to fast, flexible provisioning. Many businesses with a virtual data center have also established policy-based configurations, which shortens the software development life cycle (SDLC) more effectively.
Cost savings
The virtual data center (VDC) is becoming a cost-effective option for modern businesses. By removing the need to build and equip physical facilities, saving on hardware purchase and maintenance, and reducing the number of technicians required, businesses can optimize their budgets.
Notably, the VDC pay-as-you-go model lets a business pay only for the resources it actually uses, eliminating unnecessary spending on spare capacity.
Strong security
Virtual data centers use security measures such as the VXLAN protocol to encapsulate data, simplify administration, and maintain centralized policy. Separating network traffic and resources from physical hardware strengthens security and protects sensitive information from threats.
Building strong security across all virtualized assets is essential to protect business information and comply with industry regulations. By deploying cloud security solutions and maintaining agile security practices, organizations can effectively protect virtual assets and ensure ongoing compliance and security for IT resources.
How to deploy a virtual data center properly
Deploying a virtual data center requires careful planning, design, and monitoring to integrate effectively with existing IT infrastructure and maximize the benefits.
Planning and design
Planning and designing a virtualized data center involves defining business and technology objectives, securing agreement from stakeholders, and producing an implementation roadmap. That roadmap needs to set out the required steps clearly, including:
● Choose the right tools and platform.
● Integrating with existing systems and processes.
● Monitoring and managing the virtual environment continuously.
Choosing tools and platforms
Choosing the tools and platform for a virtual data center matters. Widely used platforms include VMware vSphere, Microsoft Hyper-V, Citrix Hypervisor, Oracle VM VirtualBox, and Red Hat Virtualization (RHV). They provide unified management of virtual machines, networking, and storage, along with self-service portals for users.
When deploying, consider the options appropriate for your organization, including on-premises, cloud, or hybrid. Each has its own advantages and drawbacks, so a careful assessment of your specific requirements and constraints will help you choose the best approach.
Monitoring and management
Continuous monitoring and management of a virtual data center is essential to keep it operating and performing well. Centralized tooling and automation simplify management, reduce cost, and increase flexibility. Tracking system data also helps detect and address incidents such as system failures or data loss, keeping the business running.
Alongside performance and reliability, security in a virtual data center matters too. Security measures worth considering include:
● Applying controls to protect the integrity of information.
● Applying technology and physical measures to protect the data center's assets and resources.
● Staying vigilant through continuous monitoring.
Conclusion
With flexible scalability, lower cost, and better manageability, a VDC is well suited to the growing demands organizations face in the digital era. Investing in a VDC improves performance and creates a durable competitive advantage in today's volatile market.
