Koponen: Storage requirements aren't letting up from regulatory requirements, expansion, 24x7 business environments, and the explosion of multimedia. Storage growth is certainly not stopping due to a slowed down economy.
So enterprises need to boost efficiencies from their existing assets as well as the future assets they're going to acquire and then to look for ways to cut capital and operating expenditures. That's really where storage virtualization fits in.
We found that in a lot of businesses they may have as little as 20 percent utilization of their storage capacity. By going to storage virtualization, they can have a 300 percent increase in that existing storage asset utilization, depending upon how it's implemented.
So storage virtualization is a way to increase asset utilization. It's also a way to save on administrative cost, and it's also a way to improve operational efficiencies, as businesses deal with the increasing storage requirements of their businesses. In fact, if businesses don't reevaluate their storage infrastructures at the same time as they're reevaluating their server infrastructures, they really won't realize the full potential of a server virtualization.
In the past, customers would just continue to deploy servers with direct-attached storage (DAS). All of a sudden, they ended up with silos or islands of storage that were more complex to manage and didn't have the agility that you would need to shift storage resources around from application to application.
Then, people moved into deploying network storage or shared storage, storage area networks (SANs) or network-attached storage (NAS) systems and realized a gain in efficiency from that. But, the same can happen. You can end up with islands of SAN systems or NAS systems. Then, to bump things up to the next level of asset utilization, network storage virtualization comes into play.
Now, you can pool all those heterogeneous systems under one common management environment to make it easy to manage and provision these islands of storage that you wound up with.
Studies show swift pay-back
A recent white paper recently done by IDC focuses on the business value of storage virtualization. It looked at a number of factors -- reduced IT labor, reduced hardware and software cost, reduced infrastructure cost, and user productivity improvements. Virtualized storage had a range of payback anywhere from four to six months, based on the type of virtualized storage that was being deployed.
There are different needs or requirements that drive the use of storage virtualization and also different benefits. It may be flexible allocation of tiered storage, so you can move data to different tiers of storage based upon its importance and upon how fast you want to access it. You can take less business-critical information that you need to access less frequently and put it on lower cost storage.
The other might be that you just need more efficient snap-shotting, a replication of things, to provide the right degree of data protection to your business. It's a function of understanding what the top business needs are and then finding the right type of storage virtualization that matches those.
In order to take advantage of the advanced capabilities of server virtualization, such as being able to do live migration of virtual machines and to put in place high availability infrastructures, advanced server virtualization require some form of shared storage.
So, in some sense, it's a base requirement that you need shared storage. But, what we've experienced is that, when you do server virtualization, it places some unique requirements on your storage infrastructure in terms of high availability and performance loads.
Server virtualization drives the creation of more data from the standpoint of more snapshots, more replicas, and things like that. So, you can quickly consume a lot of storage, if you don't have an efficient storage management scheme in place.
And, there's manageability too. Virtual server environments are extremely flexible. It's much easier to deploy new applications. You need a storage infrastructure that is equally as easy to manage, so that you can provision new storage just as quickly as you can provision new servers.
As a result, you certainly get an increased degree of data protection by being able to meet backup windows and not having to compromise the amount of information you back up, because you're trying to squeeze more backups through a limited number of physical servers. When you do server virtualization, you're reducing the number of physical servers and running more virtual ones on top of that reduced number.
You might be trying to move same number of backups through a fewer number of physical servers. You also then end up with this higher degree of data protection, because with a virtualized server storage environment you can still achieve the volume of backups you need in a shorter window.
Enterprise Strategy Group's Lab Validation Report on TSM for Virtual Environments. See why TSM is one of the preeminent backup solutions for VMware and other virtual servers. more
IBM Tivoli Storage Productivity Center can help reduce storage costs by enabling integrated management of storage assets, performance and operations from a single, web-based console. It also integrates with IBM Cognos Business Intelligence for reporting and analytics. more
This EMA paper gives insights on why storage matters for cloud and what's the advantages of storage virtualization for cloud. It reviews IBM’s software defined storage infrastructure solution and highlights the competitive differentiator for IBM's SmartCloud offering. more
The next generation of simplified backup administration dramatically improves scalability and efficiency. Experience how IBM’s advanced interface for Tivoli Storage Manager enables consolidation, intuitive problem resolution and integrated team collaboration. more
IBM Tivoli Storage Manager (TSM) provides a turnkey solution to a range of data protection issues. This complimentary ESG Lab Validation focuses on key improvements in the TSM platform that drive greater scalability, efficiency, and availability in storage management. more