Do You Agree That Virtual Server Is Much Safer Rather Than The Physical One?

These days we can see virtualization technology everywhere in our daily life. In this article I will explain about the basic knowledge of virtualization, mainly with x86 architecture, the technology used for CPU, memory, and IO, as well as the trends of virtualization technology development.For close to a decade now, Bobcares has helped digital marketers, online publishers and other online businesses maintain reliable server infrastructure. If our experience has taught us anything, it’s that there’s no one-size-fit-all solution for infrastructure design. Depending on your unique business goals and priorities, your infrastructure might need physical servers or virtual servers, or both.

1. Performance

Let’s get one thing clear first. If you take two dedicated servers of identical capabilities, virtualize one of them, and run the same application in both servers, the dedicated server will always show better performance. Why? Because virtualization always inflicts a performance penalty.That said, the game changer for virtualization is not raw one-on-one performance comparison. It’s the efficiency of resource usage.There are also cases when performance is your ONLY consideration. For eg., eCommerce websites that use dynamic pricing based on real-time competitor information need to process huge quantities of data every minute. For such applications to perform well, the database servers should be able to perform thousands of transactions with zero latency during peak business hours. A dedicated server with high speed I/O capabilities would be the right fit in such situations.However, regardless of which solution you choose (physical or virtual), server performance can take a nose dive if it is not optimized periodically. Why? Because applications are dynamic – the number of users change, the database size change, the traffic patterns change.  A server or application that’s optimized in June will perform sluggishly in July if it’s not re-optimized for the constantly changing server conditions.For eg., in our Server Management Services, we keep a close eye on server performance parameters such as response time, slow queries, out-of-memory errors, etc., so that we are immediately alerted to a new server bottleneck. We then systematically identify the source of the bottleneck, and resolve it before it can affect the server users.Such close monitoring is at the heart of maintaining good server performance. The kind of performance bottlenecks can vary from a physical server to virtual server. In dedicated servers, the bottlenecks are usually application related, such as database memory limits, cache size limits, replication latency, etc. For virtual servers, the bottle necks could be related to resource limits such as IOPS limits, CPU cycle limits, memory exhaustion, etc.

2. Cost

The most popular reason to virtualize is to save money, and it holds true for a vast majority of cases – but there are exceptions. Depending on the number of servers you have, the amount of traffic you receive, the data storage you use, and the capital you are willing to invest, your choice can vary.Calculating costs of virtualization is not a straight forward process. It involves analysis of the current resource usage, projected growth, possible bottlenecks down the road, and setting up the most suitable virtualization technology. A technology that worked well for another business may not be the right fit for you. So, we recommend all our customers to do a top-down analysis of their business goals, and consider all virtualization technologies before initiating an infrastructure change.

3. Disaster Recovery

Despite the best precautions, catastrophic server failures do happen due to electrical issues, hardware failures, fire, etc. In dedicated servers, disaster recovery in such instances involve a long-winded process of setting up new servers, installing operating systems, setting up applications, and restoring data from backups.In contrast, virtualized systems gives a way to backup the entire server image. So, given that disaster recovery systems are properly configured, restoring a failed server is easier in a virtualized infrastructure. But that doesn’t mean disaster recovery in virtualized infrastructure is fool proof.In both dedicated server AND virtual servers, disaster recovery works only if the backed-up data is up-to-date and not corrupt. The reality is that most backup processes, if left un-attended, will result in failures sooner or later. That is why we always make it a priority to closely monitor backup processes, and re-initiate backups if any are detected as incomplete. In addition, random restore tests are done to make sure all parts of the process will perform flawlessly in case of an emergency.

4. High Availability

High availability is no longer an “enterprise” system feature. A lot of solutions like DRBD, GlusterFS, Galera, Heart Beat, KeepAliveD, etc. has made high availability a common feature in dedicated server infrastructure. But with an increasing number of software, the complexity of the system increases, and the probability of a failure becomes high.In contrast, server virtualization systems such as Hyper-V, RHEV and oVirt have high-availability features that have a lower probability of failure. However, just like any other system, high-availability works only when it is properly maintained.

5. Security

Setting up a security plan for a virtual server environment is easier because you can focus on a universal security model. A more focused approach for overall security across fewer dedicated machines is easier than security for more hardware, right?Your virtual server might be on the same physical server of another company. This is especially true if you use a hosting company with a cloud environment. For example, when leasing cloud space from a hosting provider, the method they use to protect your data from the thousands of other people on the cloud should be fool proof. The security of your virtual server depends on many factors and could complicate a few items when dealing with industry regulations.

6. Infrastructure Scaling

Adding a new server or increasing RAM, CPU, or hard disk is as easy as pressing a few buttons using Virtualization. The ease of deploying new servers can decrease the time it takes to launch new products and services. When you have to add a new physical server to your environment it takes some planning. You have to purchase equipment and then load the OS, security patches, and plan out physically connecting the server to your network. Using virtualization you can usually bring up another server within minutes by using a copy of a virtual server. If you are a company adding 10 servers per month then this will be the perfect choice. The virtualization of servers does equal less hardware which can help reducing our net power usage with virtualization.

7. Managing Time

Many of the virtualization products have advanced management tools that help you to monitor and review information quicker across more servers. This can reduce the human resource needed and less 3rd party software that you have to learn along with less errors. When you have more items to manage, the risk of making mistakes also increases.Dedicated hosting solutions are more complex due to their hardware separation. Hardware management requires more time. For virtualization, many of these items are build into the software package. 

Everyone loves a successful solution. When so many businesses opt for virtualization, it is natural to feel that it is the right choice. However, different businesses have different priorities, and a solution that worked well for one company may not work well for others. So, before you invest money into virtualization technology, it is advisable to do a top-down analysis of your business goals and business priorities to build a system (physical or virtual) that is customized for your needs.Ultimately, a successful system is one that enables you to meet all your business goals, is reliable and delivers consistent performance. We help businesses like your’s to design, build, maintain and scale up server infrastructure that’s optimized for their unique business needs. If you’d like to know more about how to build and maintain a server infrastructure, we’d be happy to talk to you.

internet vpn,donate car,mesothelioma attorney,asbestos lawyer,sell annuity payments,

structured annuity settlement,annuity settlement,donate car to charity California,

donate car to charity NY,

car insurance quote,online auto insurance,insurance car,cheap car insurance