Alıntı Dökümanlar

The Importance of Networking in Hyper-Converged

In my previous post, I briefly mentioned how easily the VxRack System 1000 scales – in a couple of ways. The first is starting small, with 4 (FLEX) or 8 (SDDC) nodes and adding as your environment grows. The second is how VxRack has all of the physical networking already pre-engineered and ready to scale, today and tomorrow.

Why is networking so important in a hyper-converged conversation? It’s critical to the architecture and requires expertise and planning. When you are talking about hyper-converged at scale, if not done correctly, maintaining the same performance and availability levels becomes very complex.  Investing in a rack-scale fabric avoids the labor intensive re-engineering that can occur when environments scales.

Now, let’s look at an example of what you’d have to do if you implemented a hyper-converged appliance(s) based on a specific business challenge. Changing workloads and application needs require their own unique CI solutions. While you may start with an appliance and realize the value of using appliances, you may look to reinvest the cost and resource savings into driving additional efficiencies that require you to scale your infrastructure. This is exactly what our customers told us and we came up with our unique VxRack System that provides optimal scale.

  1. You buy a small number of appliances to solve business challenge #1.
  2. Appliances arrive. You are responsible for the networking. You (a) purchase low-cost networking or (b) you use existing resources to connect everything together.
  3. The solution works fine at small scale and you solve business challenge #1. This small number of appliances are replicating to their peer appliances without issue.
  4. Business challenge #2 arrives! You now try to add the workload onto the existing system.
  5. This might work, but it might not. You are now ultimately double dipping on the original design – more workload without additional resources.
  6. Those happy replicating appliances that you had in step #3 aren’t so happy anymore. You are replicating more traffic between the nodes, increasing the network load and potentially affecting applications performance.
  7. So, you go back to your point product appliance vendor and ask for their help. The typical answer is, “You really should buy more appliances/nodes! – This will help increase performance and available resources.”
  8. Steps 4 through 7 continue – you are your point product account executive’s best friend.
  9. At some point, your network is maxed out. Either you did not buy ‘new’ with sufficient scalability or the existing infrastructure is full.
  10. Computer technicianIn order to add extra nodes, you now try to ‘hack’ some additional networking. Yes! Maybe you try cascading switches or leverage other ‘existing resources’ to try to avoid a rebuild of the network.
  11. Eventually as you keep growing, not only are the applications on these appliances performing poorly, but it’s starting to affect the other applications not even living on the appliances. Why? Because the additional replication between all the nodes you have added over time, without any proper network-at-scale logical design, is starting to affect everything. (Insert heavy sigh…)
  12. Now the fun begins. You need to start making tactical decisions to segregate and build a new ‘bigger than ever’ network infrastructure to resolve the application performance issues.
  13. But this is a massively disruptive process, both operationally (system will have to be taken offline to re-network) and physically (need dedicated datacenter space for new racks, switching etc.).
  14. Hopefully the system you build is big enough to handle all the new incoming business requirements. But what happens if you don’t size it correctly? Make sure you hire that network expert who can. If you don’t plan correctly, you’ll likely have to re-architect the network on a regular basis depending on either (a) additional nodes or (b) additional workloads on the existing nodes

Are those 14 steps realistic? I’ll leave that to you to decide based on the needs of your environment. But if you take a look at the VxRack 1000, you’ll see why buying a rack-scale fabric up front as part of an engineered system will avoid all of those steps and re-engineering. Consisting of as many as 1,000 nodes, these racks are designed to support IT environments that are too large to be addressed by appliances, that don’t yet reach a level of scale that involves thousands of virtual machines.

A rack provides a much lower cost of entry to building out a modular data center when compared to traditional SAN environments. Within a rack, VCE supports multiple types of hyper-visors, multiple types of software-defined storage architectures and software-defined networking. This approach provides IT organizations more choice in how they achieve their IT agility goals, from software defined storage to a complete, turnkey private cloud.VxRack_front

The VCE CI portfolio all share a foundational VScale architecture based on a VCE Fabric that makes use of a spine-leaf network fabric architecture to enable the IT environment to scale. VCE Vision Intelligent Operations software then provides the framework for managing the entire environment. Collectively, these approaches to deploying and managing IT infrastructure inside a data center provide the mechanism through which IT organizations can scale their environments in ways that enable them to dynamically add to any designated pool of IT resources they desire.

We believe that, over time, IT organizations will deploy a mix of blocks, racks and appliances to support different use cases and application workload scenarios. Regardless of the approach taken, there is one thing IT organizations can count on: VCE is committed to providing a set of pre-integrated platforms that not only enable IT to get on with the business of computing much faster than ever before, but also provide a more cohesive approach to managing all the elements that comprise a truly modern enterprise-class data center.

This is shown with the VxRack System 1000. VCE has done all of the work with a system that is pre-integrated, whether you start at four nodes and then scale to 1,000. VxRack 1000, with Cisco spine-leaf architecture, has the extensibility to support all current and unexpected workloads – your hyper-converged infrastructure now has a future.

Continuing on the theme of clearly outlining the different use case for an Appliance and providing a pathway to Rack as part of the customer’s CI journey…something along the lines of Consisting of as many as 1,000 nodes, these racks are designed to support IT environments that are too large to be addressed by appliances, but don’t yet reach a level of scale that involves thousands of virtual machines.

vxRack networking

A rack provides a much lower cost of entry to building out a modular data center. Within a rack, VCE supports multiple types of virtual machines and multiple types of software-defined storage architectures. This approach provides IT organizations more choice in how they achieve their IT agility goals.

The VCE CI portfolio all share a foundational VScale architecture based on a VCE Fabric that makes use of a spine-leaf network fabric architecture to enable the IT environment to scale. VCE Vision Intelligent Operations software then provides the framework for managing the entire environment.

Collectively, these approaches to deploying and managing IT infrastructure inside a data center provide the mechanism through which IT organizations can scale their environments in ways that enable them to dynamically add to any designated pool of IT resources they desire.

We believe that, over time, IT organizations will deploy a mix of blocks, racks and appliances to support different use cases and application workload scenarios. Regardless of the approach taken, there is one thing IT organizations can count on: VCE is committed to providing a set of pre-integrated platforms that not only enable IT to get on with the business of computing much faster than ever before, but also provide a more cohesive approach to managing all the elements that comprise a truly modern enterprise-class data center.

Leave a Reply

Your email address will not be published. Required fields are marked *