The Future Of Storage As A Virtual MachineThe Future Of Storage As A Virtual Machine
In our <a href="http://www.informationweek.com/blog/main/archives/2009/11/storage_as_a_vi_1.html">last few entries</a> we looked at what can be done today with storage software running as virtual machines. In this entry we will consider what the future holds for storage as a virtual machine. Storage as a virtual machine may be the only way you apply data services in the future.
November 24, 2009
In our last few entries we looked at what can be done today with storage software running as virtual machines. In this entry we will consider what the future holds for storage as a virtual machine. Storage as a virtual machine may be the only way you apply data services in the future.First let's realize that with a few exceptions in the high end, most storage systems today run on standard Intel processors. When you select a storage system more often you are selecting it based on the capabilities of the software. It is what that software enables you to do with that hardware that matters. Again, there are exceptions, and we will look at those in a future entry.
Today many of the storage manufacturers are positioning storage as a virtual machine as a way to test and evaluate their products. Running storage as a virtual machine in production is limited to smaller environments with modest storage I/O demands. There is a concern that in larger environments, once fully throttled in a production environment virtual storage appliances may not be able to provide consistent enough performance.
One thing we know for sure is that cost of more processing power is going to get less and less expensive. We are to the point that many applications now have all the compute muscle they need to get the job done. So much so that we can have these processors act as multiple application servers via server virtualization. With each release of a new processor family the potential for excess processing power increases. As that occurs the thought of making the virtual infrastructure do more than just host applications becomes more attractive to a wider range of data centers. It leaves the door open for more widespread implementation of storage as a virtual machine as production solutions.
Virtualization does not limit the method by which storage services can be delivered. We have seen that the traditional dual controller type of storage architecture can be virtualized, NAS services can be virtualized and even clustered storage services can be virtualized by creating a virtual machine on each node in the virtual infrastructure. Today a case for highly customized hardware to perform specific functions can be made. In the foreseeable future while the need for these specialized storage systems will continue their appeal will wane.
For most data centers the increasing in processing power plus the standardized appearance of virtual machines will lead to storage services being moved to virtual appliances instead of standalone systems. Manufacturers will need to offer both virtual versions of their storage systems as well as standalone hardware versions. A key will be how well the virtual version of the appliance will be able to migrate to the standalone hardware version.
As excess processing power continues to rise the future is laden with virtual machines, and storage, at least storage services, will not escape that consolidation. The economics not only make sense for the users of those services but also the manufacturers as well. Storage as a virtual machine allows storage manufacturers to become storage software developers.
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George Crump is lead analyst of Storage Switzerland, an IT analyst firm focused on the storage and virtualization segments. Find Storage Switzerland's disclosure statement here.
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