|By Ellen Rubin||
|July 13, 2010 09:40 AM EDT||
Years ago I had the privilege of helping to grow Bladelogic from early-stage startup to a profitable organization of over 300 people. In the early days one of my first challenges was figuring out how to show our product to prospective customers effectively. I needed to show our ability to manage a large IT infrastructure but I had to do so without actually dragging a data center to each of our sales calls. (My first attempt involved renting a fleet of trucks but visitor parking turned out to be a real challenge.) As I look back on that situation now, I realize that CloudSwitch offers a perfect solution to this “data center in a box” problem. In this article I’ll walk through the use case and describe a new CloudSwitch feature, Sample VMs, which makes this possible.
The first step toward a virtual data center is to use virtualization, of course. In late 2001 VMware released the third major version of their Workstation product. Given my demonstration requirement, I bought a copy of Workstation, found the biggest “mainstream” laptop available at the time, filled it with memory, and deployed as many VMs as it would run without completely falling over. Depending on the end user’s patience, that number was somewhere between four and six. While not exactly a world-class data center, the end result served us well for demonstration purposes. It was, however, limited in capacity, slow, expensive, and difficult to maintain.
In retrospect, what we really needed was a way to:
- Quickly start new servers and turn them off when finished;
- Use existing, internal virtual servers or public server images; and
- Connect to these servers as if they were on the local network.
Fast-forward nearly ten years and the first of these points—utility capacity on demand—is all but ubiquitous courtesy of providers like Amazon and Terremark. We of course know this as “the cloud” and companies use it every day for a variety of reasons. The second two points are more interesting.
Today’s cloud providers have implemented their platforms on a particular virtualization solution—and in many cases they’ve customized these solutions to suit the needs of their product offering. This is of course perfectly natural, however one practical effect is that end users cannot simply take their own virtual machines and expect to run them within a given cloud provider’s environment. The reasons vary—different virtualization solution, different underlying hardware, different capabilities—but the end result is always the same: cloud providers will not allow end users to upload custom VMs and run them. For this, CloudSwitch is needed.
One of CloudSwitch’s fundamental benefits is the ability to run customers’ virtual servers in whichever cloud provider is most appropriate, regardless of the underlying implementation details. After deploying our appliance, users can select virtual servers within their internal VMware environment and migrate them to a public cloud provider such as Amazon or Terremark without being forced to modify those servers in any way. No additional software or configuration change is required for this to work. Users literally “point and click” to migrate virtual servers from their data center into a cloud provider.
In many cases, users want to leverage the cloud but don’t want to migrate existing servers. CloudSwitch supports this approach as well. With the recent GA release, CloudSwitch allows customers to select from a set of public “Sample VMs” for access to cloud capacity. Customers can use these sample VMs for a variety of purposes—evaluation, production, or anything in between. Further, since these machines have already been moved into the cloud, starting them is quick and efficient. Current Sample VMs include a stock Centos 5.4 base image, SugarCRM, and BugZilla running on a Windows OS. We’re expanding the list of Sample VMs based on a range of customer use cases, and have plans to include many open source and partner products.
The final point—seamless connectivity—speaks to the way cloud providers offer connectivity to their instances. Today, each provider has chosen a particular network architecture for delivery of their services. For example, if you start a Linux instance in Amazon’s EC2 service and run “ifconfig eth0” you will likely see a 10.x.x.x IP address assigned to the interface. This is because Amazon has chosen the 10.0.0.0/8 private address space for connectivity to customer instances. Other cloud providers use different addressing schemes but regardless these are different and disconnected from what customers are using within their own data centers. Further, secure connectivity to these instances is not convenient and in many cases is not possible. CloudSwitch addresses this problem as well.
As part of the deployment process, CloudSwitch automatically creates a secure overlay network within the chosen cloud provider’s environment. This overlay network extends a customer’s internal data center into the cloud so the cloud-based servers are part of the customer’s data center network. When migrating existing servers into the cloud, end users see no difference; they can SSH or RDP to migrated instances without even realizing that their servers are no longer running within the data center.
So, CloudSwitch offers a way to leverage the power of the public cloud without forcing end users to change the way their infrastructure is configured. We also offer a set of sample content customers can use if they simply want to establish a footprint in the cloud without migrating existing servers. Finally, end users connect to cloud servers just as if they were running within the data center network. The implication for my “data center in a box” use case is probably obvious: I could have installed the CloudSwitch Appliance on my sales engineers’ laptops, created a set of demo servers in the public cloud, and used these for field sales activity. We would have saved money on the laptops but more importantly my team would have been more effective.
Ultimately the cloud is about better service delivery. Better can certainly mean less expensive but in my case better would have meant more effectively expressing the value of our product to prospective customers. Regardless of the definition, CloudSwitch offers a simple, secure, and effective way to leverage the cloud. Since the early startup days in 2001 my goal hasn’t really changed much; I still want the opportunity to show you how our product can make you more effective. The difference is I finally have my “data center in a box” to prove it to you (and I don’t have to take up all of your visitor parking spots).
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