Why flash storage is so important to the success of hybrid IT infrastructure

9th February 2018
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Why flash storage is so important to the success of hybrid IT infrastructure

IT leaders are facing critical decisions on how to best deploy data centre and cloud resources to enable digital transformation. The advantages of cloud models have been written about by many IT industry commentators, experts and opinion makers. Understandably, cloud computing is fundamental to delivering the agility, cost efficiencies and simplified operations necessary for modern IT workloads and applications at scale. However the truth is, even in today’s cloud era, IT leaders still need their own IT infrastructure and data centres to make IT work for their business.

At Wanstor, we believe that today and tomorrow’s data centres must support new models for resource pooling, self-service delivery, metering, elastic scalability and automatic chargebacks. They must deliver performance and agility that the business needs. No longer is it good enough to blame legacy IT equipment for standing in the way of business progress. IT departments must make sure they reduce complexity by leveraging technologies and architectures that are simple to deploy and manage. They must achieve levels of automation, orchestration and scalability that are not possible within data centres that operate on their own.

At Wanstor we have been thinking about the future of the data centre. We believe many IT departments are missing the fundamental question when seeking answers to their existing infrastructure plans and that is:

How does the data storage strategy integrate within existing and future company owned IT infrastructure and public cloud infrastructures?

At Wanstor we believe the answer to the “storage strategy” question can be found in a storage strategy that encompasses all flash and no longer relies on cumbersome disks and tapes. All-flash storage is the single most important change an IT Manager will need to make to successfully build their future hybrid infrastructure model. Without a flexible and scalable all-flash storage architecture the future data centre and hybrid cloud model actually fails. The performance, cost efficiencies, simplicity, agility and scalability the modern IT department will need to successfully serve their business cannot be achieved without all-flash storage as the infrastructure foundation.

So how do IT Managers leverage the benefits of all-flash storage to build a service-centric data storage infrastructure required for their business? What are some of the innovations in pricing models and all-flash storage architectures that will help them create a cost-efficient, scalable, resilient and reliable hybrid IT infrastructure?

The first thing IT Managers need to recognise is that moving to all-flash storage for a truly hybrid IT infrastructure is not just simply taking an extra step and buying some more kit nor is it rip everything out and start all over again. Instead it is an iterative process that will take place over a period of time depending on how mature a business’s IT infrastructure model is at the moment and what needs to be delivered by IT for business success in the future.

Migrating applications onto all flash storage

If you are an IT decision maker, you realise that your business has probably spent a quite a bit of budget and a significant amount of effort to make sure business critical applications are supported by an underlying IT infrastructure that is reliable, robust and resilient. Indeed you are probably beginning to experience performance challenges with a range of applications, particularly those that require high levels of IOPS. But applications and workloads that might see incremental improvements through faster, more responsive storage are unlikely to be the first place where IT will deploy all-flash systems. Instead, the IT Manager is likely to have specific applications and workloads where the performance challenges of spinning disk storage are difficult to overcome and the underlying storage infrastructure needs to be modernised instead to avoid putting the business at risk. Typical applications and workloads at this stage include databases supporting online transaction processing solutions for e-commerce, infrastructures supporting DevOps teams, and applications that are specific to a particular industry, which require levels of performance that traditional disk storage simply cannot deliver.

To understand which applications should be moved to all-flash storage first, it is important to do three things:

Understand the businesses own requirements for data storage, applications and budget considerations, and identify those workloads that are causing the most pain or providing the best opportunity to use all-flash storage to drive measurable business improvements.

Evaluate the benefits of all-flash storage solutions and how they can be applied to enhance and strengthen particular applications and workloads.

Compare leading all-flash solutions and determine which features, functions and pricing models will maximize the IT department’s ability to modernise workloads and begin a journey to an IT infrastructure model based around flash storage.

When evaluating the benefits of all flash storage, Wanstor believes IT Managers should consider the following critical factors:

Performance – All-flash storage will deliver performance that is at least 10 times greater than that of traditional disks. When thinking about performance, do not focus solely on IOPS; it is also about consistent performance at low latency. Make sure an all flash architecture is deployed that delivers consistent performance across all workloads and I/O sizes, particularly if starting with multiple workloads.

Total Cost of Ownership – The price of flash storage has come down dramatically in the past 12 months. If the IT and finance teams looked at flash several years ago and were scared off by the price, it is time to explore flash storage again. In fact some all flash storage providers have prices as low as £1k per TB of data.

Smaller storage footprint – This will happen through inline de-duplication and compression, along with thin provisioning, space-efficient snapshots and clones. In some cases the storage footprint can be reduced by a ratio of 5:1, depending upon the application and workload.

Lower operational overheads – Through faster more simple deployments, provisioning and scaling and cost savings as less manual maintenance is required.

Availability and resiliency – All-flash arrays utilise a stateless controller architecture that separates the I/O processing plane from the persistent data storage plane. This architecture provides high availability (greater than 99.999%) and non-disruptive operations. The IT Manager can update hardware and software and expand capacity without reconfiguring applications, hosts or I/O networks, without disrupting applications or sacrificing performance of the hardware.

Simpler IT operations – Many all-flash arrays are now plug and play, so simple that they can be installed in less than hour in many cases. Additionally storage administrators do not have to worry about configuration tuning and tweaking, saving hours or days of effort and associated expenses.

Consolidation – The next stage of moving more applications to flash storage

Once you have put your first applications on an all-flash storage array, the improvements in performance should be enough for the IT and finance teams to decide to invest further in the technology and really accelerate their journey to a flash storage based IT infrastructure.

Most IT leaders, will want to expand the benefits they will have seen from the initial deployment of flash storage to additional applications and workloads across the data centre. As the all-flash storage solution expands to additional applications, IT Managers will find that TCO benefits increase substantially. Because all-flash storage supports mixed workloads, IT Managers will be able to consolidate more applications on fewer devices, thus reducing IT infrastructure capital expenditure. By consolidating, IT Managers will also be able to maximize many of the cost savings mentioned earlier in this article (lower energy consumption, less floor space use, reduced software licensing fees etc).

In dense mixed workload applications, the TCO of using a flash storage solution will typically be 50% to 70% lower than a comparably configured traditional disk solution. Beyond the specific cost savings, the performance gains across more applications will drive significant business improvements and new opportunities. Resulting in a more agile IT infrastructure.

Additionally, the right all-flash storage architecture will help future-proof storage infrastructure, so that the investments being made today will continue to provide value as all flash storage usage is expanded across the business.

Building a business ready cloud on all flash storage

What do IT departments want and need from their cloud infrastructures? How can they leverage the cost savings and agility of the public cloud model, and link it to the control, security, data protection and peace of mind which can be achieved with an on-premises cloud infrastructure?

From Wanstor’s recent experiences many IT Managers want it all when it comes to cloud computing. They want to be able to provide all the features, functions and flexibility available from the leading public cloud service providers within their own IT infrastructure constraints. For many IT departments deploying cloud models similar to the big 3 cloud providers in a private cloud environment is simply unrealistic as the big 3 public cloud operators have lots of cash, resources and availability in terms of their infrastructure platforms.

If the IT department is unable to provide a better alternative to a public cloud solution, it is highly likely users within a business will feel the need to go to the public cloud. This creates a fertile ground for shadow IT initiatives that can cause security problems and other risks.

Beyond delivering public cloud-like features and functionality for an IT infrastructure solution, the IT department may also want to improve in areas where the public cloud may fall short. Performance is an example of this – If you want to use cloud services to support high-performance computing or big data analytics or some of the other important next-generation IT initiatives, it is likely the IT team will have to pay a premium to a public cloud service provider to match the businesses requirements.

Security is another critical area where building your own cloud infrastructure will give the IT department much greater control and peace of mind, particularly as they begin thinking about supporting the most important business applications and data in the cloud. As the IT department moves from the first all-flash applications through consolidation and toward the all flash cloud, an important step will be to bridge the virtualization gap between servers and the rest of the IT infrastructure, namely storage and networking.

To deliver a basic cloud-type service based on a flash storage platform, IT’s list of wants must include:

Shared resources through automated processes – Users should be able to go straight to an on-premises cloud and choose the storage capacity and performance they need, for as long as they need it.

Automated metering and charging – Once users have chosen the resources they want, the cloud infrastructure should be able to meter their usage and create an automated chargeback mechanism so they pay for what they actually used.

Scalability – Once resources are used, they go back into the pool and become available to other users and departments. As storage capacity and performance requirements grow, the storage platform should be simple to upgrade, update and scale. With virtualization across servers, storage and networking, an all-flash storage array becomes the foundation for a cloud infrastructure.

In this article we have discussed all-flash storage and the foundation it provides for a truly hybrid IT infrastructure to take place. Without the benefits of all-flash storage businesses will not be able to modernise their infrastructures to deliver cloud services. It is no coincidence that the largest cloud providers rely on all-flash storage solutions as their storage foundation. As discussed you can take the journey in stages, starting small with a single application or two, and then adding more applications through consolidation and virtualization. You can also implement multiple stages at once. Or you can do everything at once with all-flash storage solutions.

At Wanstor we believe the time for flash storage is now. The technology is great and at a price point where most businesses will see a return on their storage investments within 12 months due to the improved performance they receive across their business operations.

For more information about flash storage and how Wanstor can help your business with its IT infrastructure strategy and storage platforms, please visit https://www.wanstor.com/data-centre-storage-business.htm

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