It is vital to design a centrally managed, integrated logical and physical infrastructure to support cloud migration
Today’s IT executives are looking for ways to do more with less. Organizations are challenged to bring IT services into production faster to maximize ROI and provide a
dynamic workload environment. Cloud computing allows users to provision the compute, storage, and network resources in a fraction of the time of traditional and virtual servers.
Migrating the data center to the cloud is indeed an increasingly attractive option. Cloud deployments – whether public or private – offer a host of potential benefits,
including reduced costs, simpler implementation and maintenance as well as improved business agility. Growing demands on the data center, ongoing scarce resources and the
need for greater flexibility are driving companies toward the cloud.
Many companies are in the planning stages with regard to cloud deployment, and growth in private and hybrid cloud deployment is expected during the next two years.
According to a recent IDG Research Services survey of more than 100 IT executives, more than one-third (39 percent) of respondents currently use the cloud, while 48
percent are in evaluation, consideration, or planning mode. Nearly one-quarter (24 percent) are currently using the cloud on an enterprise basis.
As companies begin to pilot cloud projects or deploy it in earnest, data center managers are discovering that migrating the data center to the cloud is not as simple as
they had imagined. The cloud does reduce to some degree the amount of computing hardware a company needs for its data center. But many fail to consider that the cloud
requires a robust physical infrastructure to maximize the expected benefits. Many executives are discovering too late that they did not focus enough on physical infrastructure
design prior to the move to the cloud. This can jeopardize cloud deployments before they begin.
The data center is a mission-critical facility. When considering moving the data center to a public or private cloud, it is important to take the time to design a
centrally managed and integrated logical and physical infrastructure to support the migration. Continuing a silo-based approach to designing, deploying and managing
the physical infrastructure is overly costly and time consuming and will reduce or thwart the cloud’s expected benefits.
- PRIVATE CLOUD: The cloud infrastructure is operated solely for an organization. It may be managed by the organization or a third party and may be on-premises or
off-premises. Turn-key products for private clouds are being called cloud-in- a-box solutions.
- PUBLIC CLOUD: The cloud infrastructure is made available to the general public or a large industry group and is owned by an organization selling cloud services.
- HYBRID CLOUD: The cloud infrastructure is a composition of two or more clouds bound together by standardized or proprietary technology that enables data and
application portability (e.g., cloud bursting for load balancing between clouds).
A Strong Foundation for Cloud
While virtualization, a key technology of cloud computing, can enable IT to reduce its population of hardware such as servers, storage devices and switches, that equipment
still requires a core infrastructure base consisting of server racks, cabinets and cables. Without a strong foundation, the payback from the cloud can diminish, as many data
center managers have discovered. Recent research shows that data center managers may not realize the cloud does not eliminate the need for solid physical infrastructure design,
which is in fact a critical success factor.
Just 15 percent of IDG survey respondents consider themselves “very successful” in designing their physical infrastructure to maximize cloud benefits. According to the survey,
those who make infrastructure design a top priority when deploying cloud technology are more likely than others to report success with maximizing cloud benefits.
Companies that do not make physical infrastructure design a top priority when preparing for cloud deployment have experienced negative outcomes as a result of reactive
infrastructure changes, including increased cost (55 percent), slower implementation times (41 percent) and increased power and cooling needs (38 percent), according to
the survey. Those still in the evaluation, consideration and planning stage with regard to cloud deployment are more likely than others to report they’ve experienced
increased power and cooling needs as a result of reactive infrastructure changes.
Infrastructure: What Matters
Data center managers cited a number of characteristics they need in their physical infrastructure solution for the cloud. For example, having an agile infrastructure
is important; otherwise, handling physical moves, adds and changes is painful. Nearly half of executives surveyed use manual processes to handle moves and changes – this
approach does not allow much flexibility. Not surprisingly, then, a majority of survey participants rated capacity management and ability to orchestrate moves/adds/changes
as the most attractive capabilities of data-center infrastructure management software.
When preparing the infrastructure for private or hybrid cloud deployment, 90 percent of IDG survey respondents rated the importance of solutions that can anticipate growth
and assess bandwidth and physical infrastructure requirements very highly. Respondents rated the inclusion of assessment services to determine or improve bandwidth requirements
as another important feature.
Visibility is another important quality for physical infrastructure, as better information helps data center managers make better decisions. 70 percent of survey respondents
said maintaining real-time visibility and control of data processes is critical or high priority. More than one-half consider it highly important to have visibility into network
reliability, bandwidth, IT asset health and capacity when leveraging third-party cloud vendors.
Benefits of Sound Infrastructure Planning
Thorough physical infrastructure planning pays off in terms of lower cost and outages. The top benefits of solutions that help prepare the infrastructure for cloud deployment
include minimizing unplanned outages, reducing infrastructure management costs, increasing time available for strategic activities and faster provisioning, according to survey
participants. Other benefits of planning ahead: reduced infrastructure complexity, better operational control, improved confidence in layer 1 stability, and a documented and
approved provisioning process.
PRIVATE CLOUD: Infrastructure Questions and Considerations
If considering migrating the data center to a private cloud, here are some questions and factors to evaluate:
- Increased server bandwidth requirements: What demands will virtualization place on the speed and bandwidth of your network? By reducing the number of physical
servers, the number of virtual machines on each physical server increases (as does network bandwidth requirements on the server). What would increased bandwidth on
your existing hardware and network infrastructure mean to you?
- Managing physical server I/O proliferation: Many companies experience a large increase in the I/O per server as they adopt virtualization. How will you manage
high cable densities? How has virtualization changed the way you architect your network and IT infrastructure?
- Need to efficiently plan cabling infrastructure: Virtualization leads to an increase in bandwidth and number of cables connected to each server. How will you
manage up to three times more cables in each cabinet and in your pathways?
- Need to plan for greater power and cooling needs: What steps are you taking to increase the cooling efficiency of your data center? How does your team monitor
and manage the available power and cooling for a given server or cabinet? Would it be valuable to have the ability to remotely manage connectivity, power and
environmental sensing of network equipment? Do you have initiatives to improve mean time between failures (MTBF)?
- Cloud-in-a-box impact on the data center: Integrating cloud-in-a-box into the data center infrastructure can be a challenge. Traditionally, enterprise data
centers do not mix server, storage, and network devices in a single cabinet. How will your team account for the thermal management of active equipment with different
cooling requirements in a single cabinet? How will your team ensure your data center is ready for a cloud-in-a-box deployment? What is your plan for weight
distribution and power balancing per power outlet and unit of equipment when creating or implementing cloud-in-a-box?
PUBLIC CLOUD: Infrastructure Questions and Considerations
Public cloud providers ought to consider the following:
- Fast implementation to accommodate rapid growth: How do you streamline the process of designing, specifying, installing and managing the increasingly complex
physical infrastructure necessary to optimize your data center? How do you facilitate faster implementation of the physical infrastructure in your data center?
- High-density server deployments exceed available power and cooling supply: How does your team monitor and manage the available power and cooling for a given
server or cabinet? What value would remote management of connectivity, power and environmental sensing of network equipment bring?
- Maximize revenue generation per square foot or kilowatt: How do you ensure that you maximize revenue in your facility? This includes maximizing floor space
and vertical space in the cabinet. Cable congestion in cabinets can cause cooling issues due to blocked airflow, and can complicate moves, adds and changes,
increasing costs and risk. How will you manage high densities of cables?
- Ability to meet or exceed SLAs: How do physical infrastructure moves, adds and changes impact your ability to meet your SLAs?
The earlier you consider and plan for a comprehensive infrastructure, the faster you will see a return on your cloud investment. More than half of the executives
surveyed (59 percent) said they rely on or would rely on outside help for design and/or implementation when deploying to a private or hybrid cloud. Just over
one-third (34 percent) rely on their technology provider while one-quarter outsource design, procurement and/or implementation to a systems integrator.
Migrating your data center to the cloud can be very beneficial in terms of reduced cost and complexity. But beware a common pitfall – believing that the cloud will allow you
to sidestep physical infrastructure considerations. Many companies are not receiving the benefits they expected to see from a cloud migration for the simple reason that they
did not pay enough attention to physical infrastructure early in the design process. Focusing on physical infrastructure design will pay dividends before, during and after
your data center migration.