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5 Cool Things About Virtual Servers

Wednesday, February 17th, 2010

In an earlier blog post I discussed some key concepts regarding how virtual servers work.  Now that they are currently available you are probably wondering what all the fuss is about. Obviously they are less expensive and achieve the same goals as a dedicated server, but what cool things does virtualization offer?

Virtual Server Interface

1) We can virtualize any hardware based server in minutes.

This is probably number one on my list. We can completely virtualize a hardware based server in minutes. This is not only better for the environment (e.g. less power generated = less CO2) but it means that you can replace your outdated server without having to tear-down and replace your website. Your entire configuration is left 100% intact! This is great for someone looking to upgrade or would like to test out some new software.

2) Virtual servers can be built quickly.

Unlike a dedicated server, virtual servers don’t take long to deploy. We can deploy your virtual server quickly and likewise remove it when you are done with it. Think about it like a consumable resource. As such, if you temporarily need two servers to load balance your website during peak traffic times you can do it without the expense of large setup fees and time.

3) Virtual servers can be duplicated /copied / backup exactly.

Did I mention that we can virtualize your hardware based server? Well we can also duplicate existing virtual servers in minutes too. So if you want to stash a point-in-time backup of your server in case of emergency you can. If you want to test a special version of your website without the risk to your production environment you can.  

4) Virtual servers can be extended quickly.

Need more RAM, HDD or Processor speed during peek times? Not a problem we can extend a virtual server with a few clicks and a restart. Likewise, you can downgrade it just as fast. What does that mean? Well it’s like renting a Ferrari for the day. When your date is over you get back in your more economical Prius (= less hosting fees) and cruise along.

5) Virtual servers can be moved easily.

Let’s say the host machine your virtual server is on needs maintenance. We can simply import your virtual server on to another host machine while maintenance is being performed with little or no downtime. Try that with a dedicated server. Your only choice with a dedicated server is to try to reproduce your entire environment by moving your files and configuration to another machine – it’s just not going to happen (easily).

As you can see virtual servers are a beyond cool alternative for those looking to get into a dedicated serveror to upgrade their existing hardware-based server. They really offer so many benefits over traditional hardware-based servers.

Virtual Server Performance Update

Saturday, May 30th, 2009

It’s been about a month and our new virtual servers are running great. In fact, we anticipate that we can probably double the amount of virtual servers on the host system. We are very encouraged. We are begining to start performance tuning as some of the machines have slight lags while working in terminal services. However, it doesn’t seem to affect overall web server performance.  Our monitoring logs show a substantial reduction in HTTP latency as compared to their physical counterparts. Our performancing tuning plans include enabling SpanningTree fast on the switch ports (helps increase recovery time if a port fails), upgrading the virtual NIC to the newer vmxnet virtual NIC, and by reviewing the HOST NIC’s and HDD to enable/disable recommened settings. Overall, we are pleased with the rsults so far and are beining to plan additional virtualization deployments.

First Production Virtual Server Added

Thursday, April 30th, 2009

I am very happy to report that we’ve recently launched our first production virtual server. The server was converted from a standalone dedicated server using VMware vCenter Converter, which is software that takes an exact image of a server and creates a virtual copy on the host server.

Virtual Server technology has been around for some time. We had previously setup a virtual server a couple of years ago, but decided to scrap the project because the ratio between the number of virtual servers and the cost of the host system was off. It was actually cheaper to use hardware based servers. Now, the ratio is there because of mutli-core CPU’s and enhanced virtual technologies.

This is a big step in the right direction. It will pave the way for us to consolidate our servers and reduce our power and rack space consumption.  This is key if we are to remain competitive. In some ways we were disadvantaged because we have been in business so long. Newer startups, using virtual technology, have options that we never had. Virtually speaking, it might be possible to reproduce our core web hosting services on a handful of servers instead of 10x that many.

We hope to be able to offer customer-facing solutions using virtual technology within the next 3 months.

Server Virtualization

Tuesday, April 28th, 2009

You may have heard about a new web hosting option coming to EPhost soon called Virtual Servers (or server virtualization). I wanted to take a moment and explain virtual technology, and explain the differences between it and another technology called Virtual Private Servers (VPS).

VMWare Virtual Servers

VMWare Virtual Servers

You can think of virtual servers as a server within a server. A virtual server is an independent isolated operating system that lives inside another server. Multiple virtual servers can reside on the same physical server. Usually they are referred to as the Host system (physical server) and the Guest OS (virtual server). Each virtual server operates entirely independent of one another and for the practical part independent of the Host System. What makes this situation so unique is that there is literally no difference between a virtual server and physical server– not to mention that the same physical server can host many virtual servers.

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