Virtualized Datacenters

February 19, 2009

It shouldn’t be any surprise to people who know SoftLayer that we follow the "Virtual Datacenter" discussions quite closely. In fact, it is awesome to see people discussing what sounds a lot like what SoftLayer already is.

The concept of Virtual Datacenter is that you have all the power of a datacenter at your command without having to worry about the details of actually running a datacenter. Chad Sakac from EMC wrote an excellent post in his personal blog about the transformation to a Virtual Datacenter.

One of the points Chad makes is the abstraction of the physical infrastructure. Quoting Chad:

"Every Layer of the physical infrastructure (CPU, Memory, Network, Storage) need to be transparent. Transparency means 'invisible'. This implies a lot, and implies that the glue in the middle, like a general purpose OS, needs to provide the "API models" for those hardware elements to be transparent. "

I latched on to this point because that is what we have been building at SoftLayer for the last few years. We realize that the abstraction of the physical infrastructure not only means that end-users don’t need to know how to manage the physical infrastructure, but that the abstraction can make more efficient use of resources (= money!).

Let’s talk about the advantages of virtualized infrastructure. Without virtualization, provisioning a web-facing server on the network would involve obtaining rack space, a server, licensing and loading an OS, finding a switch port, physically connecting a cable or three, setting up the switch port (I hope you know IOS), getting IP Addresses (hopefully you don’t have to go get more from ARIN), and adding a firewall and/or load balancer (more procurement, cabling, and configuration). Adding storage could be just as complex – also involving procurement, racking, cabling, and configuration. This doesn’t sound very efficient. In fact, it sounds a lot like creating a “circular device that is capable of rotating on its axis, facilitating movement or transportation whilst supporting a load”. It's been done before and I'll bet it’s been done better by people other than you.

Using virtualized infrastructure you should be able to perform the task with a few clicks of a mouse or a few API calls and have the functionality you need set up in a few minutes instead of days, weeks, or months. No worrying about procurement, physical constraints, or learning the specifics of network and storage devices from different vendors. All you should have to focus on is the running of your particular application. You shouldn’t have to worry about configuring servers, networking, and storage any more than you should have to worry about chillers, HVAC, generators, and UPS batteries.

-@nday91

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