1 White Paper Hybrid Cloud Storage Defining and Explaining Microsoft s Solution Deployment of StorSimple and Windows Azure By Mark Peters, Senior Analyst November 2013 This ESG White Paper was commissioned by Microsoft and is distributed under license from ESG by the Enterprise Strategy Group, Inc. All Rights Reserved.
2 White Paper: Hybrid Cloud Storage 2 Contents New Approach to Storage: Embracing the Cloud... 3 Introducing Cloud-integrated Storage and Hybrid Cloud Storage... 3 CiS: Definitions and Market Applicability... 4 What CiS Is and Is Not... 4 Market Applicability... 4 Buying Considerations... 5 CiS and HCS Are Compelling: Economics and Emotions... 6 Delivering Economic Value... 6 Delivering Emotional Value... 7 The Bigger Truth... 9 The majority of this White Paper originally appeared in an ESG Market Report, Cloud-integrated Storage, April That paper introduced the new storage category of cloud-integrated storage (CiS) and was made public on the ESG website and distributed by a number of vendors in that space. One of those vendors was StorSimple, which has since been acquired by Microsoft and has now combined its CiS platform with the Microsoft Azure public cloud to deliver its complete Hybrid Cloud Storage (HCS) solution. This new White Paper version of the original Market Report has been produced for Microsoft: It has been updated and edited where necessary, and the nomenclature has been changed from CiS to HCS and/or brief new notes have been added where necessary for clarity. All trademark names are property of their respective companies. Information contained in this publication has been obtained by sources The Enterprise Strategy Group (ESG) considers to be reliable but is not warranted by ESG. This publication may contain opinions of ESG, which are subject to change from time to time. This publication is copyrighted by The Enterprise Strategy Group, Inc. Any reproduction or redistribution of this publication, in whole or in part, whether in hard-copy format, electronically, or otherwise to persons not authorized to receive it, without the express consent of The Enterprise Strategy Group, Inc., is in violation of U.S. copyright law and will be subject to an action for civil damages and, if applicable, criminal prosecution. Should you have any questions, please contact ESG Client Relations at
3 White Paper: Hybrid Cloud Storage 3 New Approach to Storage: Embracing the Cloud If you delight in being a part of or being responsible for a group of storage administrators who are forever getting deeper into the intricacies, complexities, and difficulties of complex storage environments, then this paper is probably of little interest. If, however, you view storage not only as a crucial tool that should be as flexible and economic as possible, but also as a vital asset that you should control, then you should probably keep reading. Everyone knows that the traditional storage models of recent decades need to change. This is because data growth, application demand, and complexity are all increasing, while data security requirements and limited budgets handcuff the ability of IT to meet these increased demands. The challenge is easy to understand, but answers have been limited. Yet, a new approach has the potential to address all these issues. While conceptually it is close to storage architectures that we already have, it also embodies key differences that contain dramatic operational and financial opportunities. Clarity of terminology matters and that is the purpose of this paper. There s often an awkwardness to the semantics of storage. On the one hand, we are keen to have new descriptors so we can put vendors and their offerings into neat boxes. On the other hand, if those descriptors are not adequately defined or if the nature of the offerings changes, then we can be left with something that is too broad or even misleading. Cloud gateways perfectly good in and of themselves have become a broad catch-all for links to the (invariably) public cloud. Yet now, emerging variations in the storage implementation compel us to define a new category. A gateway is just a point of access, allowing movement to and from the cloud; whereas the approach described in this paper includes that movement as part of a more holistic approach. The underlying technology of this new category is called cloud-integrated storage (CiS); one of the initial CiS implementations was from a vendor called StorSimple. Now that StorSimple has been bought by Microsoft, the CiS product offering of the former has been combined with the Windows Azure cloud offering of the latter to produce an overall solution that Microsoft calls Hybrid Cloud Storage. Introducing Cloud-integrated Storage and Hybrid Cloud Storage Defining Cloud-integrated Storage: Because it had not been named before 2012, cloud-integrated storage (CiS) had been variously and inadequately talked about as just tiering or a gateway. Each of these descriptors could arguably be a necessary-but-not-sufficient element for a comprehensive CiS offering. Numerous implementation options will arise as the CiS category develops and matures, but the essence of it is to integrate and control cloud storage as part of a user s regular/main IT operations, not to have it as just an external service. Already, there are examples of traditional storage vendors using cloud storage as a tier for their storage arrays. Other vendors offer systems that can be used as on-premises storage together with an integrated connection to some vendors cloud storage. The configurations vary and will no doubt grow in flexibility and operational sophistication. Today, some vendors use cloud storage as the primary storage target, with the local appliance holding only cached data to reduce the latency associated with storing data offsite. Others have at least some primary data in the local appliance (whether held directly or pinned), with the cloud being used as an archival and disaster recovery (DR) target. Also, an emerging category of software can leverage storage capacity and characteristics regardless of whether that storage is onsite or in the cloud, creating a stretch or geo-distributed cluster. Whatever the precise implementation, the essence of the cloud-integrated storage approach is that colloquially speaking you are not just sending your data over the data center fence to the cloud; instead, you are widening your reach to wrap your arms around the cloud and integrate it into your approach. It is an inclusive rather than an exclusive approach. And as this paper will show it is not only worthy of being its own category, but it also offers significant potential benefits to businesses ranging from SMBs to large enterprises. Defining Hybrid Cloud Storage: Taking the CiS platform/capability/device (however it may be referred to as) and wrapping it together with a defined public cloud in Microsoft s case this is, of course, Windows Azure turns the offering into a complete service solution. The descriptor that Microsoft is using for this end-to-end integrated
4 White Paper: Hybrid Cloud Storage 4 service offering is Hybrid Cloud Storage (HCS); it also seems likely that this terminology will be adopted by other providers as this type of offering becomes more prevalent. Value Proposition: So, why are CiS and HCS offerings likely to be an important element in IT over the next few years? The answer is simple: IT is a combination of people, processes, and technology. For storage users who want to stay with legacy arrays or keep existing processes in place, using cloud as a storage tier behind what appears to be a conventional array gives them the extensibility and price points of cloud without radically altering processes or having to retrain staff. Alternatively, for users who need a more comprehensive DR strategy but can t afford a remote site, system, and staff to manage it, using tools within a storage array and simply (if figuratively) turning some dials to mirror encrypted data to the cloud is low risk and affordable. Cloud-integrated storage systems are bridging technologies that tie the present to the future. They represent a familiar, safe way to wrap together the best of traditional and emerging (i.e., cloud) worlds, enjoying the economic attraction and flexibility of the latter while retaining the control, familiarity, and performance of the former. It is a beguiling proposition and worthy of being a standalone category. While the full HCS solution with Windows Azure is clearly an attractive business proposition, the technical foundation is the CiS element that constitutes the bridge. CiS: Definitions and Market Applicability What CiS Is and Is Not The quickest way to understand what CiS is not is to ask about who has control of what goes where. If the last real control that a user has is when the data hits the wire to leave the building, then it is not a CiS solution. CiS systems may use a gateway, but they are more than that. As the name implies, the cloud elements of the solution are integrated into the whole, embraced as a pragmatic part of a flexible and economically attractive storage solution. Again, it is worth stressing that many of the terms used in regular gateway/cloud storage discussions such as migration, cloud economics, easy provisioning can and do apply to a cloud-integrated storage system (CiSS), too. But a CiSS adds all-in-one control and management, where the advantages of cloud storage are just part of an orchestrated whole-storage approach everything from high performance, to archive, to data protection being managed as one organic system (meaning, of course, that good CiS implementations allow end-users to have direct access to anything, anywhere in the physical system). A typical CiS approach will have the primary and/or most active data staying onsite (as a tier or cache) usually encrypted with the cloud used for less active data and as an easily scalable archive as well as for powerful remote data protection and business continuity capabilities. The benefits of CiS and the reasons why it is implemented are: Consolidation, ease of use, flexibility, and operational certainty (for VM sprawl, , files, etc.) ROI/TCO, plus improved (integrated!) resilience and recovery Market Applicability While this paper explains HCS, the offering will only have a real chance at market relevance if the cloud (here this is meant generically, other than Windows Azure specifically) on which it is based is itself becoming more popular and accepted. A selection of insights from various recent ESG research studies show that this is indeed happening: Twenty two percent of organizations identified the use of cloud infrastructure services as one of their most important overall IT priorities for Thirty seven percent of users (up from 20% in 2012) said using cloud storage to add capacity without buying infrastructure is one of their most significant investments over the next 12 to 18 months. 1 1 Source: ESG Research Brief, 2013 Storage Spending Trends, March 2013.
5 White Paper: Hybrid Cloud Storage 5 Fifty percent of respondents say that cloud will represent 21+% of all infrastructure expenditures within three years. Figure 1 shows graphically how cloud in its various forms is achieving a significant level of actual and planned adoption among IT users. 2 This is important for HCS (incorporating CiS) to be a successful storage approach. Figure 1. Public Cloud Adoption Trends Please indicate your organization s usage of or plans for each of the following cloud computing services. (Percent of respondents, N=62) Currently use No use or plans at this time but we are interested Don t know Do not currently use but we plan to No use, plans, or interest at this time Software-as-a-service (SaaS) 47% 21% 18% 11% 3% Infrastructure-as-a-service (IaaS) 16% 31% 5% Platform-as-a-service (PaaS) 10% 19% 27% 39% 5% Buying Considerations 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Source: Enterprise Strategy Group, Existing vendors and stealth companies are in the wings. And logic dictates that more will arrive as IT becomes more virtualized, flexible, and commoditized. As the CiS segment grows, what should interested users look for when considering their CiS options (in this case, irrespective of whether or not these are part of an HCS implementation) whether it be for a whole company, or for particular applications or departments? Basic needs: While it is true for any IT buying decision, the first thing to define is what requirements and expectations you have of the system. As in a vehicle buying process: Do you need a motorbike, a sedan, a minivan, or a truck? What top speed and what seating capacity? In the cloud purchasing scenario: Where is the cloud storage actually located (obviously it could be part of an integrated HCS solution using Windows Azure, it could be at another industry giant such as Amazon, Google, Dell, Oracle or HP, maybe somewhere more specialized such as Rackspace, or potentially at a specialist regional or vertical provider)? Is it plug and play (standards-based) and secure (encrypted)? Can you easily change the provider if desired to take advantage of a better deal elsewhere? Remember that you might not need high performance for all your data, but you do want it all online, available, and secure. Advanced needs: There will likely be CiS offerings suited for every organization, from SMBs to enterprises. What category are you in? What duty cycles, features, and functions will you need? At the enterprise end of the equation, for example, you will probably want to look for capabilities that you already need and use (or are considering) with more traditional storage infrastructure: easy provisioning, snapshots, replication, data reduction (such as compression and deduplication, which are inherently good but especially important to minimize CiS network traffic), a globally distributed file system (for collaboration), high availability through non-disruptive upgrades, no single point of failure, and hot-swap for everything (including controllers). 2 Source: ESG Research Report, 2013 IT Spending Intentions Survey, January 2013.
6 White Paper: Hybrid Cloud Storage 6 Does the vendor have the right certifications with the right vendors (such as VMware and Microsoft)? Do you need a tracking tool for chargeback or client billing? Credibility and proof: Of course, this is a new approach to storage, so no vendor has many thousands of installations. Nonetheless, look for references where possible (many do exist), a willingness to offer a proof of concept, and other signs of maturity (such as extensive connectivity capabilities, strong interoperability with OS and hypervisor providers, and a comprehensive data management tool/gui). Clearly, recent highprofile cloud storage failures (Nirvanix is the latest and highly noticeable example) can cause some initial concerns among potential adopters; however, an objective review of the situation will quickly conclude that such failures do not have any meaningful bearing on the inherent value of the integrated cloud model they merely auger in favor of a careful choice of vendor(s). This in turn is, of course, good news for not only an integrated solution such as HCS from Microsoft, but also for dealing with large, stable cloud vendors (again, Windows Azure would fit here). Overall: Whatever level and type of CiS you decide meets your needs, you will be converging multiple storage components that are currently separate. In all likelihood, you ll be making your life a lot simpler with many management issues taken off the table. With good CiS implementations, you will not have to change your applications or operational procedures, yet you will gain enormous flexibility. (All by itself, this on demand element is a key motivation for CiS.) And you most likely will save a significant amount of money. At the end of the day, CiS is an umbrella storage solution that will serve as a user s storage platform so it should be viewed holistically in terms of providing all that you need and want from your storage. It is not just an add-on nicety; it is your storage, period. It may, of course, also be more flexible, more economical, and easier to manage, but all these features will be for naught if your chosen CiS approach does not offer the full range of functionality you require. So be considerate and even pedantic in your evaluation. CiS and HCS Are Compelling: Economics and Emotions The operational basics of CiS are easy to grasp: Everything (primary active storage, archive, backup, and DR) is managed in one well-utilized appliance with flexibility and a user-suitable range of capabilities. This may be as simple as automatically backing up data to perhaps snapshots that can occur offsite and/or between multiple cloud vendor sites, for more advanced users. The effectiveness and efficiency is abundantly obvious. HCS adds an integrated and interoperable cloud storage service. But two other e words have a huge impact on the level of market success for any storage product. The first economics is no surprise. The second emotions may cause a raised eyebrow or two. It is less often discussed but is a key driver of what really gets bought. Delivering Economic Value Economics is the bedrock of the storage industry. All the factors that dominate storage discussions capacity, performance, data management tools, and so on are only relevant because storage isn t free. No one would put any data anywhere other than at the very top of the storage and memory hierarchy otherwise. But storage isn t free, so we have decisions to make. CiS allows users to enjoy the economics of both consolidation and cloud storage without losing operational control. With a better use of all local storage resources (people, space, equipment, etc.) and the financial benefits of cloud storage, the impact of CiS on overall TCO can be dramatic. Just avoiding the costs of array-based remote-copy tools and maintaining a remote site (things that many users don t do simply because of the costs) can be very attractive. And with data protection continuing to be a pain point (and with data growth rates being what they are, it only gets worse), having the ability to leverage cloud storage as a backup target or for archiving could have a significant costreduction impact relative to keeping data local and managing tape libraries or VTLs.
7 White Paper: Hybrid Cloud Storage 7 And the bottom line is that saving money matters dramatically indeed primarily in IT. ESG s latest spending intentions research 3 included a question that asked users globally to identify the most important business initiatives impacting their IT spending decisions; the results, shown in Figure 2 and covering a five year trend, demonstrate that even as the global economic challenges have eased cost reductions are the clear and consistent number one most-cited motivation. Figure 2. Business Initiatives Impacting IT Spending Decisions Delivering Emotional Value 0% 10% 20% 30% 40% 50% 60% Source: Enterprise Strategy Group, It may seem strange to include emotional value in a discussion of IT tools. But the simple fact is that emotions are an important part of how people make decisions. Everyone is for instance risk averse to some degree; it is one reason why different people and organizations proceed at different speeds in adopting new ways of doing things. Both HCS and its CiS component offer a number of ways that will make users will feel more comfortable about beginning to use cloud storage: Business initiatives that will have the greatest impact on organization s IT spending decisions over the next months, by year. (Percent of respondents, three responses accepted) Cost reduction initiatives Business process improvement initiatives Security/risk management initiatives Regulatory compliance Providing our employees with the mobile devices and applications they need to maximize productivity Improved data analytics for real-time business intelligence and customer insight Developing strategies to ensure we interact with our customers on their mobile devices Improved internal collaboration capabilities 31% 34% 33% 30% 31% 25% 29% 27% 29% 31% 26% 19% 25% 25% 21% 23% 19% 16% 12% 13% 15% 18% 21% 45% 42% 43% 44% In an IT world where growing expectations, data capacities, and rampant virtualization are making storage more challenging, there is a comfort in having the flexibility that CiS provides, based on skilled, specialist professionals at the cloud provider (in this case, Windows Azure) and yet, CiS users do not have to relinquish ultimate control of their data; this is a very different proposition than washing your hands of storage and just passing ownership out there. 54% 2009 (N=492) 2010 (N=515) 2011 (N=611) 2012 (N=614) 2013 (N=540) 3 Source: ESG Research Report, 2013 IT Spending Intentions Survey, January 2013.
8 White Paper: Hybrid Cloud Storage 8 CiS can be viewed as the best of both worlds, inasmuch as both the operational and financial teams at user sites will be happy. As cloud use begins to appear in IT managers bonuses alongside or instead of virtualization, CiS will be an attractive option for users: While most CiSS offerings are not intended for tier-1 applications at least today (after all, there s still a network wire involved), the simple fact is that such data is a relatively small part of most organizations overall storage needs, and most users could therefore find plenty of opportunities to try this new approach. And, of course, the fact that HCS from Microsoft includes Windows Azure as its public cloud provider will make most prospective users feel secure in their decision because Microsoft is viewed as a stable, credible, and reliable provider with the sort of critical mass and commitment necessary to offer the levels of quality, investment, reliability, and longevity that is a crucial in choosing a cloud provider. Overall, HCS doesn t require users to break all their emotional attachments. Very often, a big reason not to do something is feelings, not facts; while vendors will no doubt (and rightly) produce extensive verbiage about speed, capacity, functionality, and costs, it will be the reduced worry that is most compelling for many users.
9 The Bigger Truth White Paper: Hybrid Cloud Storage 9 The summary here doesn t need to be long; that in itself is a big clue that Hybrid Cloud Storage based on the compelling foundation of cloud-integrated storage is a practical approach that looks set to catch a significant market share by integrating rather than simply adding cloud storage to users onsite storage infrastructures. Basically, users can enjoy the benefits of the cloud (economy, data protection, and access to features and functions that they might not otherwise have or afford) while still retaining control of their data and operations. It can be thought of as your own storage that s just on a very long wire (or even multiple wires) from the controller! While Microsoft s acquisition of StorSimple means it is leading with its holistic HCS offering, the underlying CiS category has already attracted a number of players, each with their own interpretation of the basic segment theme and business advantages. Vendors from the cloud storage gateway category are natural candidates for the CiS category, and established storage behemoths are also interested. The number of vendors that are delivering CiS solutions is bound to grow, but holistic options are currently limited. StorSimple was certainly an early innovator in this market, while other market entrants are focused in a variety of ways: some are primarily emphasizing gateway functions such as providing a local target for data protection and caching (examples are TwinStrata, Amazon Storage Gateway, Riverbed); some are emphasizing distributed access of data and files (such as Nasuni, with its full service based model, and Panzura, with its global access emphasis); and some are focusing on the policy-based movement of files (one is F5). EMC has EMC Atmos-based cloud storage integrated into its Celerra platform through its cloud tiering appliance for files. However, most incumbent storage vendors are unlikely to proactively support cloud storage services that move data away from their storage systems. Big names, such as Google, Amazon, and of course Microsoft, also underpin the cloud storage component, which helps to give credibility and a sense of longevity to the segment. As with all things in storage and IT, the key question for interested users should eventually be less about how this is all done (we will assume that everything from the vendors works as advertised) and instead should be about what is delivered and whether that meets their functional and financial needs. In other words, the point is for users to determine whether CiS is generically a good storage option for them, and whether HCS is their preferred overall solution. It has already attracted many users who value the combination of flexibility, control, data protection, and economic advantage that it can deliver. CiS is a cloud-inclusive storage approach and HCS is Microsoft s CiS tool combined with its Windows Azure cloud storage that offers enormous potential advantages for large swaths of user data, without requiring a large leap of faith, a huge checkbook, or a total change in human nature.
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Research Brief 2012 Networking Spending Trends Date: March 2012 Author: Jon Oltsik, Senior Principal Analyst; Bob Laliberte, Senior Analyst; and Bill Lundell, Senior Research Analyst Abstract: According
GET CLOUD EMPOWERED. SEE HOW THE CLOUD CAN TRANSFORM YOUR BUSINESS. Cloud computing is as much a paradigm shift in data center and IT management as it is a culmination of IT s capacity to drive business
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Research Report Abstract: Trends in Data Protection Modernization By Jason Buffington, Senior Analyst, and Bill Lundell, Senior Research Analyst August 2012 Introduction Research Objectives Research Report: