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A Custom Technology Adoption Profile Commissioned By EMC Corporation


How Organizations Are Improving Business Resiliency With
Continuous IT Availability

February 2013


Introduction: Business Stakeholders Demand Higher Levels Of IT Availability
In today’s economic environment, organizations must deliver top-notch service 24x7 or suffer financial losses and long-
term damage to the organization’s reputation. In the private sector, if your service is down, your customers can move to a
competitor with relative ease; in the public sector, loss of access to critical services can erode citizen confidence in
government institutions; and in healthcare, it can endanger patient health. Across all industries, there is less and less
tolerance for any kind of downtime. And in a hyper-connected world, news of downtime spreads rapidly, making it ever
more difficult to repair damaged reputations. As a result, key stakeholders in the organization are demanding much higher
levels of IT service availability. In just the past few years, discussions of acceptable downtime and data loss have shifted
from hours and minutes to seconds, and for many organizations, the discussion has shifted to continuous availability.

There is another shift taking place; your stakeholders no longer care what caused the downtime or even if the downtime
was planned. They no longer make a distinction between incidents that disrupt a portion of IT services such as localized
software failures, hardware failures, and data corruption or incidents that affect the entire data center such as extreme
weather and regional power outages. From their perspective (and your clients’ perspective), service is down.

This Technology Adoption Profile examines how IT decision-makers’ expectations and approaches are evolving to address
these increasing demands from their organization and clients.

The Risks To Availability Are Increasing
As business demands for availability are increasing, so too are the risks. Every week there is news of another organization
experiencing a major disruption. A company’s eCommerce website may be down for a few hours because of human error
or a botched upgrade, or extreme weather like hurricane Sandy or even a severe winter storm can throw an organization
into chaos. Why are there so many frequent disruptions and outages? In a joint study by Forrester and the Disaster
Recovery Journal (DRJ), we asked organizations if they felt the level of risk was increasing, and to identify the top three
risks of greatest concern. An overwhelming majority, 82%, said the level of risk was indeed increasing, and they identified:
1) technology dependency; 2) business complexity; and 3) extreme weather as top risks (see Figure 1). Specifically:
   • Business processes are ever more technology dependent. In today’s digital age, the majority of processes are
      dependent on technology. From communication to sales to supply chain to customer service, manual procedures
      that the organization can fall back on when IT services are unavailable no longer exist. For years, organizations have
      replaced manual procedures and paper records with software and online communication, file sharing and records
      management. This means that if IT services are unavailable, processes are down. This also means that even planned
      outages (e.g., upgrades, technology deployments, etc.) can be problematic. In fact, upgrades and deployments are
      quite common; when Forrester Research asked IT executives and decision-makers to identify their top IT software
      technology priorities during the next 12 months, 66% reported that upgrading packaged applications was a critical or
      high priority, and 68% reported that increasing deployment and use of technologies was a critical or top priority.1
Forrester Consulting
How Organizations Are Improving Business Resiliency With Continuous IT Availability


         Given that organizations must deliver more and more services 24x7, there is a much shorter maintenance window
         during which these upgrades and deployments can take place, so any mistakes made during these procedures can
         extend downtime significantly. For IT operations, because agreed upon IT availability service levels with stakeholders
         will encompass all downtime (planned and unplanned), so too must the approaches it develops for both local high
         availability (HA) and disaster recovery (DR).

    • Business processes are increasingly complex. In the past, there was often a 1:1 relationship between a process and
         the IT application that enabled it. Today, a typical process (e.g., financial accounting, supply chain management,
         order fulfillment, customer service, HR, or communication) is a composite of dozens of interdependent IT
         applications and services, some that IT maintains itself and some that partners (e.g., outsourcers, integrators, or
         cloud providers) maintain. Because of the complexity of the interdependencies, the unavailability of a seemingly
         non-critical application can disrupt an entire business process. As a result, IT must categorize more and more
         applications and systems as mission-critical and business-critical. Moreover, because the availability discussion has
         shifted from a discussion of hours and days to one of seconds and minutes, it’s no longer enough to provide HA and
         DR protection for mission-critical applications; IT must extend protection to business-critical applications as well.
         For most organizations, mission-critical applications can only experience seconds or minutes of downtime (typically
         120 minutes or less), while for business-critical applications, it’s minutes to hours (typically 120 minutes to 6 or 8
         hours). Extending this protection without breaking the bank with capital expenditures, idle infrastructure, and
         significant IT overhead becomes a major challenge.

    • There are more highly probable, high-impact risks. According to joint studies by Forrester and the Disaster
         Recovery Journal, the most common cause of a major business disruption was extreme weather/natural disasters,
         followed closely by power outages, IT failures, telecom failures, flood, and fire.2 The increasing frequency of extreme
         weather events such as Hurricane Sandy is a major cause of concern. Extreme or even severe weather events have the
         ability to knock out entire data centers and can also create a series of cascading events like power outages, fuel
         shortages (for backup power generators), or floods that affect data center availability. Due to the growing frequency
         of extreme weather, the business no longer sees availability efforts as expensive insurance policies for rare events.


Figure 1
Technology Reliance, Business Complexity, And Extreme Weather Are The Top Risks




      Base: 246 global business continuity decision-makers and influencers who have conducted or are planning to conduct a risk assessment
Source: Forrester/Disaster Recovery Journal Business Continuity Preparedness Survey, Q4 2011, Forrester Research, Inc.




Page 2
Forrester Consulting
How Organizations Are Improving Business Resiliency With Continuous IT Availability


To Meet Business Demands, Many Organizations Aim For Continuous Availability
At many organizations, DR architectures and processes look the same today as they did 10, 15, and even 20 years ago. IT
operations replicate backup images off-site, while cold, warm, or hot sites stand by for failover. In addition, many
organizations often silo local HA and DR into separate functions with separate approaches — and budgets. However, with
business demands for higher availability and the increasing risks to that availability, more IT pros are unifying their HA
and DR approaches in order to achieve continuous availability. In a continuous availability approach, IT pros redesign
their IT architecture in such a way that it can withstand the loss of individual components, or even sites, while continuing
to deliver IT services. As small or large failures occur, sites and infrastructure seamlessly pick up where the other left off.
Not surprisingly, when Forrester Research asked IT decision-makers and influencers to identify their top IT infrastructure
priorities during the next 12 months, 61% reported that purchasing or upgrading business continuity and disaster recovery
(BC/DR) capabilities was a top priority (see Figure 2). This prioritization influences technology adoption and use
throughout IT. For example, 55% of organizations reported that improving BC/DR was very important to their decision to
adopt x86 server virtualization (see Figure 3). With server virtualization, IT operations can rapidly restart virtual machines
(VMs) on alternate physical hosts, configure VMs in HA or fault-tolerant configurations, or non-disruptively migrate VMs
to other hosts — within and across data centers.


Figure 2
Upgrading BC/DR Is A Top IT Priority




                                               Base: 661 US enterprise IT hardware decision-makers
Source: Forrsights Hardware Survey, Q3 2012, Forrester Research, Inc.



Figure 3
Improving BC/DR Drives Adoption Of x86 Server Virtualization




              Base: 324 US enterprise IT hardware decision-makers who are interested in, planning to, or have adopted x86 virtualization
Source: Forrsights Hardware Survey, Q3 2012, Forrester Research, Inc.




Page 3
Forrester Consulting
How Organizations Are Improving Business Resiliency With Continuous IT Availability


Active-Active Data Center Adoption Is Strong
To achieve a higher level of availability without the high cost of an idle recovery data center or data center that IT uses
simply to run deferrable workloads, many organizations are moving toward active-active data center architectures. In an
active-active data center architecture, there are production workloads operating at two or more data centers, and IT can
failover or maintain the high availability of these workloads across the data centers. An active-active data center
architecture is major first step toward achieving continuous availability. Continuous availability is a further advancement
of active-active data centers; it combines HA/DR into a single approach by running a single, stretched instance of an
application across two production data centers. To do this requires: 1) IT infrastructure and compute capacity distributed
across each site (servers, storage, network, etc.); 2) the ability to provide simultaneous application and data access between
the sites in a coherent fashion; 3) a stretched cluster across the sites; and 4) a load balancing mechanism that can route
transactions to the appropriate applications within each data center.
In January 2013, EMC Corporation commissioned Forrester Consulting to further explore the consideration and pursuit of
active-active architecture at large US organizations (1,000 employees and above). Our study found that:

    • Forty-four percent of organizations surveyed have already adopted active-active data center architecture. Thirty-
         two percent have applications at production data centers that can act as a failover for the other, while 12% run their
         applications in HA configurations across two production data centers (see Figure 4). Those in the former category,
         while not quite achieving continuous availability today, are in a better position to evolve to continuous availability in
         the future. Even among organizations that architect their data centers in active-passive configurations, 21% of them
         try to increase the utilization of redundant infrastructure at the recovery site by offloading secondary workloads such
         as application development and testing. It’s clear that organizations are moving away from active-passive
         configurations where expensive IT assets remain idle until a disruption.

    • Twelve percent of organizations have already moved toward a continuous availability service environment. By
         running applications in an HA configuration across their production data centers, these organizations can achieve
         continuous availability. If there is a local failure of any component (e.g., IT failure or human error) or an entire site
         failure (e.g., extreme weather, power outage, flood, or fire), these apps will continue processing. In addition to
         providing continuous availability, this type of combined HA/DR solution can also improve application performance
         by load balancing transactions across production data centers.

There is a lot of confusion in the marketplace regarding the exact definition of continuous availability (CA), and that
debate will likely continue. However, it can be helpful to compare and contrast DR, HA, and CA from a service perspective
as follows. 1) The term itself, “disaster recovery,” implies that after a failure, the organization is down, and IT requires
manual intervention to restart IT services. Once IT has made the decision to failover, the recovery process may in fact be
automated using technologies such as virtualization, but it still requires that initial human intervention. 2) High availability
implies that when a failure occurs, the recovery process is automatic — it does not need human intervention (e.g., VMs
architected in HA and fault-tolerant configurations). 3) Continuous availability implies that the failure is transparent to the
end application. In other words, the application does not see the failure.




Page 4
Forrester Consulting
How Organizations Are Improving Business Resiliency With Continuous IT Availability


Figure 4
Many Organizations Have Already Adopted Active-Active Data Center Configurations




                        Base: 80 US enterprise decision-makers involved in their organization’s disaster recovery strategy
Source: A commissioned study conducted by Forrester Consulting on behalf of EMC Corporation, January 2013



Active-Active Data Centers Provide Operational And Financial Benefits
When Forrester Consulting asked organizations with active-active data centers about the benefits of this architecture, a
staggering 89% of respondents agreed or strongly agreed that it had helped them unite HA and DR into a single approach
(see Figure 5). This means that IT operations no longer has to invest separately in HA for localized failures and DR for site
failures (or potentially sacrifice one or the other because of cost); they can have both in a single approach. The unified
approach also reduces overall cost because IT operations no longer must test each approach separately or maintain
infrastructure for both. Organizations identified other benefits, including the ability to:

    • Leverage off-the-shelf technology. Continuous availability solutions no longer require custom technology and
         complex integration; according to our study, 69% of organizations agreed or strongly agreed that they were able to
         achieve their combined HA and DR solution using off-the-shelf technology. This is important because it means that
         organizations not only save money, but they also reduce the complexity by avoiding investment and maintenance of
         custom technology in their environment. Complexity is a risk to availability, so avoiding unnecessary complexity and
         standardizing environments where possible is ideal.

    • Reduce DR capital expenditures. Normally, to achieve both HA and DR as a separate solution requires investment
         in redundant infrastructure locally for HA and at the production site for DR. With a combined approach that
         stretches across both sites, you can reduce the necessary capital expenditures on infrastructure. According to our
         study, 67% of organizations agreed or strongly agreed that they were able to reduce capital expenditures by
         combining HA and DR.

    • Reduce the downtime for all IT services and applications. With increasing technology dependence, it’s important
         that mission-critical, business-critical, and business-supporting applications achieve higher levels of availability.
         Historically, because of the cost of traditional DR approaches, organizations could only achieve the highest levels of
         availability for their mission-critical applications. With an active-active data center approach, by leveraging off-the-
         shelf technologies, reducing capital expenditures, and improving utilization, they can extend HA/DR protection to
         business-critical applications as well. According to our study, 86% of organizations agreed or strongly agreed that
         active-active data center reduced downtime for all IT services and apps.




Page 5
Forrester Consulting
How Organizations Are Improving Business Resiliency With Continuous IT Availability


Figure 5
Continuous Availability Achieves Both Operational And Financial Benefits




 Base: 36 US enterprise decision-makers involved in their organization’s disaster recovery strategy who designate all data centers as production sites
Source: A commissioned study conducted by Forrester Consulting on behalf of EMC Corporation, January 2013



More Organizations Are Ready For Continuous Availability
Forty-four percent of organizations have already adopted active-active data center architectures today, and many of those
organizations without active-active data center architectures are struggling with DR. According to our study, 50% of
respondents without an active-active data center configuration are not confident that their DR capability is scalable or will
achieve their recovery objectives (see Figure 6). And 44% of the respondents agree or strongly agree that they struggle to
maintain an up-to-date DR environment either because of the rate of change in production or a lack of resources.


Figure 6
Those Without Active-Active Data Centers Are Ready For Continuous Availability




  Base: 44 US enterprise decision-makers involved in their organization’s disaster recovery strategy who have designated/separate production and
                                                               recovery data centers
Source: A commissioned study conducted by Forrester Consulting on behalf of EMC Corporation, January 2013




Page 6
Forrester Consulting
How Organizations Are Improving Business Resiliency With Continuous IT Availability


These challenges, plus clear business demand for higher levels of availability, are driving many organizations to think about
a continuous availability approach. Implementing active-active data center capabilities is either a reality in many
organizations or a consideration for the future. Consider that organizations surveyed:

    • Lack confidence in existing DR solutions. Eighty-two percent of respondents without active-active data center
         architectures aren’t sure that their DR solution will meet all recovery objectives. This lack of confidence diminishes
         the value of the recovery solution and defeats its purpose. Because traditional DR failovers are risky and costly, most
         IT operations teams avoid invoking a DR plan unless it is absolutely necessary, posing a dilemma for IT operations
         teams. When there is an outage, do you meet your SLAs to the organization by invoking recovery procedures, and
         risk a greater outage if the recovery fails, or wait it out (e.g., if it’s a power outage or a network or system failure that
         IT can attempt to remediate)? Unless the scenario is a “smoking hole,” many firms may opt to wait out an outage.

    • Believe that off-the-shelf continuous availability technology is mature. Overall, 58% of all the survey respondents
         have either implemented active-active data center architectures or believe that off-the-shelf technologies are mature
         enough to achieve a combined HA/DR solution — 69% of the active-active data center group use off-the-shelf
         components for their combined HA/DR solution, and 47% of the non-active-active data center group believe that
         off-the-shelf technology is mature enough to achieve the combination.

    • Have already adopted or are ready for continuous availability solutions. Today’s HA solutions are highly
         automated and provide a near-immediate replacement for losses of components or services without significant
         human intervention. A DR declaration, on the other hand, is risky, costly, and usually requires C-level concurrence.
         To improve DR as well eliminate the need to formally “declare” a disaster and invoke a recovery plan, 56% of the
         study group has already adopted some form of combined HA/DR or continuous availability solution or are
         considering it — 69% of the active-active data center group has a combined HA/DR solution, and 46% of the non-
         active-active data center group is interested in pursuing the combination.


Conclusion
Organizational demands for higher levels of availability will only increase. It’s not a question of if but how IT operations
will achieve these demands cost effectively. By combining HA/DR in a single approach, organizations can achieve higher
levels of availability, even continuous availability, without the huge capital expenditures and costly overhead of separate
solutions and idle recovery data centers. Moreover, they can actually transform DR, from a shaky capability that IT
operations is weary to invoke to an embedded ability to withstand the loss of individual components, or even sites, while
continuing to deliver IT services. The evidence is clear: Many organizations are already moving toward continuous
availability, many have already adopted active-active data centers and unified approaches to HA/DR using off-the-shelf
technology, and those that haven’t want to do so and believe that off-the-shelf technology is mature enough to do it.

Obviously, moving to an approach like continuous availability does not happen overnight; it is a journey. As with other IT
transformations, organizations can perform a gap analysis using desired future state for continuous availability against
current architecture and infrastructure. Using the gap analysis, they can then develop a road map that outlines both the
strategic and tactical shifts and changes that must occur to IT processes, architecture, and technology adoption, and one
that includes cost-benefit analysis to outline capital expenditures, operating costs, and cost savings and benefits.




Page 7
Forrester Consulting
How Organizations Are Improving Business Resiliency With Continuous IT Availability


Methodology
This Technology Adoption Profile was commissioned by EMC Corporation. To create this profile, Forrester leveraged its
Forrester/Disaster Recovery Journal Business Continuity Preparedness Survey, Q4 2011, as well as its Forrsights Hardware
Survey, Q3 2012. Forrester Consulting supplemented this data with custom survey questions asked of 80 US IT decision-
makers at organizations with 1,000 or more employees. Respondents were involved in their organization’s disaster recovery
strategy, and their organizations currently use an alternate data center that acts as a failover or recovery site for their
production data center(s). Survey questions related to current architecture of their HA/DR capabilities and performance of
those architectures in practice. The auxiliary custom survey was conducted in January 2013. For more information on
Forrester’s data panel and Tech Industry Consulting services, visit www.forrester.com.

Endnotes

1
 Source: Forrsights Software Survey, Q4 2012, Forrester Research, Inc.
2
 Results of the Forrester/Disaster Recovery Journal Business Continuity Preparedness Survey, Q4 2011; 61% of business
continuity decision-makers in US enterprises have invoked a business continuity plan (BCP). Of those enterprises, 55% cite
natural disasters as the cause of that invocation, more than any other cause. Power outages (49%), IT failures (36%), flood
(28%), fire (18%), and telecommunications failures (14%) were also cited as common causes of invoking a BCP.




About Forrester Consulting
Forrester Consulting provides independent and objective research-based consulting to help leaders succeed in their organizations. Ranging in scope
from a short strategy session to custom projects, Forrester’s Consulting services connect you directly with research analysts who apply expert insight
to your specific business challenges. For more information, visit www.forrester.com/consulting.

© 2013, Forrester Research, Inc. All rights reserved. Unauthorized reproduction is strictly prohibited. Information is based on best available resources.
Opinions reflect judgment at the time and are subject to change. Forrester®, Technographics®, Forrester Wave, RoleView, TechRadar, and Total Economic
Impact are trademarks of Forrester Research, Inc. All other trademarks are the property of their respective companies. For additional information, go to
www.forrester.com.[1-LRZVHP]




Page 8

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Forrester: How Organizations Are Improving Business Resiliency with Continuous IT Availability

  • 1. A Custom Technology Adoption Profile Commissioned By EMC Corporation How Organizations Are Improving Business Resiliency With Continuous IT Availability February 2013 Introduction: Business Stakeholders Demand Higher Levels Of IT Availability In today’s economic environment, organizations must deliver top-notch service 24x7 or suffer financial losses and long- term damage to the organization’s reputation. In the private sector, if your service is down, your customers can move to a competitor with relative ease; in the public sector, loss of access to critical services can erode citizen confidence in government institutions; and in healthcare, it can endanger patient health. Across all industries, there is less and less tolerance for any kind of downtime. And in a hyper-connected world, news of downtime spreads rapidly, making it ever more difficult to repair damaged reputations. As a result, key stakeholders in the organization are demanding much higher levels of IT service availability. In just the past few years, discussions of acceptable downtime and data loss have shifted from hours and minutes to seconds, and for many organizations, the discussion has shifted to continuous availability. There is another shift taking place; your stakeholders no longer care what caused the downtime or even if the downtime was planned. They no longer make a distinction between incidents that disrupt a portion of IT services such as localized software failures, hardware failures, and data corruption or incidents that affect the entire data center such as extreme weather and regional power outages. From their perspective (and your clients’ perspective), service is down. This Technology Adoption Profile examines how IT decision-makers’ expectations and approaches are evolving to address these increasing demands from their organization and clients. The Risks To Availability Are Increasing As business demands for availability are increasing, so too are the risks. Every week there is news of another organization experiencing a major disruption. A company’s eCommerce website may be down for a few hours because of human error or a botched upgrade, or extreme weather like hurricane Sandy or even a severe winter storm can throw an organization into chaos. Why are there so many frequent disruptions and outages? In a joint study by Forrester and the Disaster Recovery Journal (DRJ), we asked organizations if they felt the level of risk was increasing, and to identify the top three risks of greatest concern. An overwhelming majority, 82%, said the level of risk was indeed increasing, and they identified: 1) technology dependency; 2) business complexity; and 3) extreme weather as top risks (see Figure 1). Specifically: • Business processes are ever more technology dependent. In today’s digital age, the majority of processes are dependent on technology. From communication to sales to supply chain to customer service, manual procedures that the organization can fall back on when IT services are unavailable no longer exist. For years, organizations have replaced manual procedures and paper records with software and online communication, file sharing and records management. This means that if IT services are unavailable, processes are down. This also means that even planned outages (e.g., upgrades, technology deployments, etc.) can be problematic. In fact, upgrades and deployments are quite common; when Forrester Research asked IT executives and decision-makers to identify their top IT software technology priorities during the next 12 months, 66% reported that upgrading packaged applications was a critical or high priority, and 68% reported that increasing deployment and use of technologies was a critical or top priority.1
  • 2. Forrester Consulting How Organizations Are Improving Business Resiliency With Continuous IT Availability Given that organizations must deliver more and more services 24x7, there is a much shorter maintenance window during which these upgrades and deployments can take place, so any mistakes made during these procedures can extend downtime significantly. For IT operations, because agreed upon IT availability service levels with stakeholders will encompass all downtime (planned and unplanned), so too must the approaches it develops for both local high availability (HA) and disaster recovery (DR). • Business processes are increasingly complex. In the past, there was often a 1:1 relationship between a process and the IT application that enabled it. Today, a typical process (e.g., financial accounting, supply chain management, order fulfillment, customer service, HR, or communication) is a composite of dozens of interdependent IT applications and services, some that IT maintains itself and some that partners (e.g., outsourcers, integrators, or cloud providers) maintain. Because of the complexity of the interdependencies, the unavailability of a seemingly non-critical application can disrupt an entire business process. As a result, IT must categorize more and more applications and systems as mission-critical and business-critical. Moreover, because the availability discussion has shifted from a discussion of hours and days to one of seconds and minutes, it’s no longer enough to provide HA and DR protection for mission-critical applications; IT must extend protection to business-critical applications as well. For most organizations, mission-critical applications can only experience seconds or minutes of downtime (typically 120 minutes or less), while for business-critical applications, it’s minutes to hours (typically 120 minutes to 6 or 8 hours). Extending this protection without breaking the bank with capital expenditures, idle infrastructure, and significant IT overhead becomes a major challenge. • There are more highly probable, high-impact risks. According to joint studies by Forrester and the Disaster Recovery Journal, the most common cause of a major business disruption was extreme weather/natural disasters, followed closely by power outages, IT failures, telecom failures, flood, and fire.2 The increasing frequency of extreme weather events such as Hurricane Sandy is a major cause of concern. Extreme or even severe weather events have the ability to knock out entire data centers and can also create a series of cascading events like power outages, fuel shortages (for backup power generators), or floods that affect data center availability. Due to the growing frequency of extreme weather, the business no longer sees availability efforts as expensive insurance policies for rare events. Figure 1 Technology Reliance, Business Complexity, And Extreme Weather Are The Top Risks Base: 246 global business continuity decision-makers and influencers who have conducted or are planning to conduct a risk assessment Source: Forrester/Disaster Recovery Journal Business Continuity Preparedness Survey, Q4 2011, Forrester Research, Inc. Page 2
  • 3. Forrester Consulting How Organizations Are Improving Business Resiliency With Continuous IT Availability To Meet Business Demands, Many Organizations Aim For Continuous Availability At many organizations, DR architectures and processes look the same today as they did 10, 15, and even 20 years ago. IT operations replicate backup images off-site, while cold, warm, or hot sites stand by for failover. In addition, many organizations often silo local HA and DR into separate functions with separate approaches — and budgets. However, with business demands for higher availability and the increasing risks to that availability, more IT pros are unifying their HA and DR approaches in order to achieve continuous availability. In a continuous availability approach, IT pros redesign their IT architecture in such a way that it can withstand the loss of individual components, or even sites, while continuing to deliver IT services. As small or large failures occur, sites and infrastructure seamlessly pick up where the other left off. Not surprisingly, when Forrester Research asked IT decision-makers and influencers to identify their top IT infrastructure priorities during the next 12 months, 61% reported that purchasing or upgrading business continuity and disaster recovery (BC/DR) capabilities was a top priority (see Figure 2). This prioritization influences technology adoption and use throughout IT. For example, 55% of organizations reported that improving BC/DR was very important to their decision to adopt x86 server virtualization (see Figure 3). With server virtualization, IT operations can rapidly restart virtual machines (VMs) on alternate physical hosts, configure VMs in HA or fault-tolerant configurations, or non-disruptively migrate VMs to other hosts — within and across data centers. Figure 2 Upgrading BC/DR Is A Top IT Priority Base: 661 US enterprise IT hardware decision-makers Source: Forrsights Hardware Survey, Q3 2012, Forrester Research, Inc. Figure 3 Improving BC/DR Drives Adoption Of x86 Server Virtualization Base: 324 US enterprise IT hardware decision-makers who are interested in, planning to, or have adopted x86 virtualization Source: Forrsights Hardware Survey, Q3 2012, Forrester Research, Inc. Page 3
  • 4. Forrester Consulting How Organizations Are Improving Business Resiliency With Continuous IT Availability Active-Active Data Center Adoption Is Strong To achieve a higher level of availability without the high cost of an idle recovery data center or data center that IT uses simply to run deferrable workloads, many organizations are moving toward active-active data center architectures. In an active-active data center architecture, there are production workloads operating at two or more data centers, and IT can failover or maintain the high availability of these workloads across the data centers. An active-active data center architecture is major first step toward achieving continuous availability. Continuous availability is a further advancement of active-active data centers; it combines HA/DR into a single approach by running a single, stretched instance of an application across two production data centers. To do this requires: 1) IT infrastructure and compute capacity distributed across each site (servers, storage, network, etc.); 2) the ability to provide simultaneous application and data access between the sites in a coherent fashion; 3) a stretched cluster across the sites; and 4) a load balancing mechanism that can route transactions to the appropriate applications within each data center. In January 2013, EMC Corporation commissioned Forrester Consulting to further explore the consideration and pursuit of active-active architecture at large US organizations (1,000 employees and above). Our study found that: • Forty-four percent of organizations surveyed have already adopted active-active data center architecture. Thirty- two percent have applications at production data centers that can act as a failover for the other, while 12% run their applications in HA configurations across two production data centers (see Figure 4). Those in the former category, while not quite achieving continuous availability today, are in a better position to evolve to continuous availability in the future. Even among organizations that architect their data centers in active-passive configurations, 21% of them try to increase the utilization of redundant infrastructure at the recovery site by offloading secondary workloads such as application development and testing. It’s clear that organizations are moving away from active-passive configurations where expensive IT assets remain idle until a disruption. • Twelve percent of organizations have already moved toward a continuous availability service environment. By running applications in an HA configuration across their production data centers, these organizations can achieve continuous availability. If there is a local failure of any component (e.g., IT failure or human error) or an entire site failure (e.g., extreme weather, power outage, flood, or fire), these apps will continue processing. In addition to providing continuous availability, this type of combined HA/DR solution can also improve application performance by load balancing transactions across production data centers. There is a lot of confusion in the marketplace regarding the exact definition of continuous availability (CA), and that debate will likely continue. However, it can be helpful to compare and contrast DR, HA, and CA from a service perspective as follows. 1) The term itself, “disaster recovery,” implies that after a failure, the organization is down, and IT requires manual intervention to restart IT services. Once IT has made the decision to failover, the recovery process may in fact be automated using technologies such as virtualization, but it still requires that initial human intervention. 2) High availability implies that when a failure occurs, the recovery process is automatic — it does not need human intervention (e.g., VMs architected in HA and fault-tolerant configurations). 3) Continuous availability implies that the failure is transparent to the end application. In other words, the application does not see the failure. Page 4
  • 5. Forrester Consulting How Organizations Are Improving Business Resiliency With Continuous IT Availability Figure 4 Many Organizations Have Already Adopted Active-Active Data Center Configurations Base: 80 US enterprise decision-makers involved in their organization’s disaster recovery strategy Source: A commissioned study conducted by Forrester Consulting on behalf of EMC Corporation, January 2013 Active-Active Data Centers Provide Operational And Financial Benefits When Forrester Consulting asked organizations with active-active data centers about the benefits of this architecture, a staggering 89% of respondents agreed or strongly agreed that it had helped them unite HA and DR into a single approach (see Figure 5). This means that IT operations no longer has to invest separately in HA for localized failures and DR for site failures (or potentially sacrifice one or the other because of cost); they can have both in a single approach. The unified approach also reduces overall cost because IT operations no longer must test each approach separately or maintain infrastructure for both. Organizations identified other benefits, including the ability to: • Leverage off-the-shelf technology. Continuous availability solutions no longer require custom technology and complex integration; according to our study, 69% of organizations agreed or strongly agreed that they were able to achieve their combined HA and DR solution using off-the-shelf technology. This is important because it means that organizations not only save money, but they also reduce the complexity by avoiding investment and maintenance of custom technology in their environment. Complexity is a risk to availability, so avoiding unnecessary complexity and standardizing environments where possible is ideal. • Reduce DR capital expenditures. Normally, to achieve both HA and DR as a separate solution requires investment in redundant infrastructure locally for HA and at the production site for DR. With a combined approach that stretches across both sites, you can reduce the necessary capital expenditures on infrastructure. According to our study, 67% of organizations agreed or strongly agreed that they were able to reduce capital expenditures by combining HA and DR. • Reduce the downtime for all IT services and applications. With increasing technology dependence, it’s important that mission-critical, business-critical, and business-supporting applications achieve higher levels of availability. Historically, because of the cost of traditional DR approaches, organizations could only achieve the highest levels of availability for their mission-critical applications. With an active-active data center approach, by leveraging off-the- shelf technologies, reducing capital expenditures, and improving utilization, they can extend HA/DR protection to business-critical applications as well. According to our study, 86% of organizations agreed or strongly agreed that active-active data center reduced downtime for all IT services and apps. Page 5
  • 6. Forrester Consulting How Organizations Are Improving Business Resiliency With Continuous IT Availability Figure 5 Continuous Availability Achieves Both Operational And Financial Benefits Base: 36 US enterprise decision-makers involved in their organization’s disaster recovery strategy who designate all data centers as production sites Source: A commissioned study conducted by Forrester Consulting on behalf of EMC Corporation, January 2013 More Organizations Are Ready For Continuous Availability Forty-four percent of organizations have already adopted active-active data center architectures today, and many of those organizations without active-active data center architectures are struggling with DR. According to our study, 50% of respondents without an active-active data center configuration are not confident that their DR capability is scalable or will achieve their recovery objectives (see Figure 6). And 44% of the respondents agree or strongly agree that they struggle to maintain an up-to-date DR environment either because of the rate of change in production or a lack of resources. Figure 6 Those Without Active-Active Data Centers Are Ready For Continuous Availability Base: 44 US enterprise decision-makers involved in their organization’s disaster recovery strategy who have designated/separate production and recovery data centers Source: A commissioned study conducted by Forrester Consulting on behalf of EMC Corporation, January 2013 Page 6
  • 7. Forrester Consulting How Organizations Are Improving Business Resiliency With Continuous IT Availability These challenges, plus clear business demand for higher levels of availability, are driving many organizations to think about a continuous availability approach. Implementing active-active data center capabilities is either a reality in many organizations or a consideration for the future. Consider that organizations surveyed: • Lack confidence in existing DR solutions. Eighty-two percent of respondents without active-active data center architectures aren’t sure that their DR solution will meet all recovery objectives. This lack of confidence diminishes the value of the recovery solution and defeats its purpose. Because traditional DR failovers are risky and costly, most IT operations teams avoid invoking a DR plan unless it is absolutely necessary, posing a dilemma for IT operations teams. When there is an outage, do you meet your SLAs to the organization by invoking recovery procedures, and risk a greater outage if the recovery fails, or wait it out (e.g., if it’s a power outage or a network or system failure that IT can attempt to remediate)? Unless the scenario is a “smoking hole,” many firms may opt to wait out an outage. • Believe that off-the-shelf continuous availability technology is mature. Overall, 58% of all the survey respondents have either implemented active-active data center architectures or believe that off-the-shelf technologies are mature enough to achieve a combined HA/DR solution — 69% of the active-active data center group use off-the-shelf components for their combined HA/DR solution, and 47% of the non-active-active data center group believe that off-the-shelf technology is mature enough to achieve the combination. • Have already adopted or are ready for continuous availability solutions. Today’s HA solutions are highly automated and provide a near-immediate replacement for losses of components or services without significant human intervention. A DR declaration, on the other hand, is risky, costly, and usually requires C-level concurrence. To improve DR as well eliminate the need to formally “declare” a disaster and invoke a recovery plan, 56% of the study group has already adopted some form of combined HA/DR or continuous availability solution or are considering it — 69% of the active-active data center group has a combined HA/DR solution, and 46% of the non- active-active data center group is interested in pursuing the combination. Conclusion Organizational demands for higher levels of availability will only increase. It’s not a question of if but how IT operations will achieve these demands cost effectively. By combining HA/DR in a single approach, organizations can achieve higher levels of availability, even continuous availability, without the huge capital expenditures and costly overhead of separate solutions and idle recovery data centers. Moreover, they can actually transform DR, from a shaky capability that IT operations is weary to invoke to an embedded ability to withstand the loss of individual components, or even sites, while continuing to deliver IT services. The evidence is clear: Many organizations are already moving toward continuous availability, many have already adopted active-active data centers and unified approaches to HA/DR using off-the-shelf technology, and those that haven’t want to do so and believe that off-the-shelf technology is mature enough to do it. Obviously, moving to an approach like continuous availability does not happen overnight; it is a journey. As with other IT transformations, organizations can perform a gap analysis using desired future state for continuous availability against current architecture and infrastructure. Using the gap analysis, they can then develop a road map that outlines both the strategic and tactical shifts and changes that must occur to IT processes, architecture, and technology adoption, and one that includes cost-benefit analysis to outline capital expenditures, operating costs, and cost savings and benefits. Page 7
  • 8. Forrester Consulting How Organizations Are Improving Business Resiliency With Continuous IT Availability Methodology This Technology Adoption Profile was commissioned by EMC Corporation. To create this profile, Forrester leveraged its Forrester/Disaster Recovery Journal Business Continuity Preparedness Survey, Q4 2011, as well as its Forrsights Hardware Survey, Q3 2012. Forrester Consulting supplemented this data with custom survey questions asked of 80 US IT decision- makers at organizations with 1,000 or more employees. Respondents were involved in their organization’s disaster recovery strategy, and their organizations currently use an alternate data center that acts as a failover or recovery site for their production data center(s). Survey questions related to current architecture of their HA/DR capabilities and performance of those architectures in practice. The auxiliary custom survey was conducted in January 2013. For more information on Forrester’s data panel and Tech Industry Consulting services, visit www.forrester.com. Endnotes 1 Source: Forrsights Software Survey, Q4 2012, Forrester Research, Inc. 2 Results of the Forrester/Disaster Recovery Journal Business Continuity Preparedness Survey, Q4 2011; 61% of business continuity decision-makers in US enterprises have invoked a business continuity plan (BCP). Of those enterprises, 55% cite natural disasters as the cause of that invocation, more than any other cause. Power outages (49%), IT failures (36%), flood (28%), fire (18%), and telecommunications failures (14%) were also cited as common causes of invoking a BCP. About Forrester Consulting Forrester Consulting provides independent and objective research-based consulting to help leaders succeed in their organizations. Ranging in scope from a short strategy session to custom projects, Forrester’s Consulting services connect you directly with research analysts who apply expert insight to your specific business challenges. For more information, visit www.forrester.com/consulting. © 2013, Forrester Research, Inc. All rights reserved. Unauthorized reproduction is strictly prohibited. Information is based on best available resources. Opinions reflect judgment at the time and are subject to change. Forrester®, Technographics®, Forrester Wave, RoleView, TechRadar, and Total Economic Impact are trademarks of Forrester Research, Inc. All other trademarks are the property of their respective companies. For additional information, go to www.forrester.com.[1-LRZVHP] Page 8