A Taste of VxRail Deployment Flexibility
Wed, 24 Apr 2024 12:05:16 -0000
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With the recent announcements of VxRail dynamic nodes and satellite nodes, the VxRail portfolio is certainly getting more diverse. Like after any good trick-or-treating run, it’s time to sort through the bag of goodies. Yes, here in the United States it’s Halloween time if you can believe it, though stores are trying to confuse you by putting up Christmas decorations already.
The addition of VxRail dynamic nodes and VxRail satellite nodes allows VxRail to address even more customer workloads. This blog breaks down the different deployment options that are now available at the datacenter and at the edge. So, let’s check out what’s in that bag.
VxRail for the datacenter
VxRail for the datacenter
At the core of the VxRail portfolio is the VxRail cluster with vSAN. To me, the VxRail node with vSAN plays the role of the Snickers bar -- a hyperconvergence of caramel, peanuts, and milk chocolate with the heartiness and versatility to satisfy your need for energy whether at home or far from it. Similarly, the VxRail node is composed of software-defined compute and storage, in vSphere and vSAN, internal cache and capacity drives, and network cards. Running on VxRail HCI System Software, the VxRail cluster provides a hyperconverged infrastructure (HCI) that allows customers to cost-effectively scale and incrementally expand their cluster, from as few as 3 nodes to 64 nodes, to match the pace of growth of their workload requirements. Most VxRail customers start with this deployment type as their introduction to the world of HCI.
The VxRail node is available in six different series that are based on several PowerEdge Server platforms to offer different combinations of space-efficiency, performance, storage capacity, and workload diversity.
For situations where customers are looking for site resiliency to service their applications, they can turn to stretched clusters. A cluster can be stretched across two datacenters so that, in case one site experiences a catastrophic event that causes it to go offline, the secondary site can automatically service the same applications to the clients. Because writes to storage need to be mirrored onto the secondary site before they are acknowledged on the primary site, the two sites are typically in the same region so that latency does not significantly impact the quality of service of the applications running on the primary site.
With the addition of VxRail dynamic nodes, VMware Cloud Foundation (VCF) on VxRail customers can now better address use cases where customers continue to utilize their enterprise storage arrays to run mission-critical or life-critical workloads for data resiliency and data protection. Almost every industry has applications that fall under this category such as financial service applications or critical patient care services. For these applications, customers typically store them on enterprise storage arrays and rely on vSphere clusters for virtualized compute resources. By deploying VxRail dynamic node clusters as vSphere clusters, customers will benefit from the same operational consistency and simplicity across all their VxRail clusters
Like Halloween candy without nuts, there are use cases for VxRail nodes without drives. VxRail dynamic nodes are compute-only nodes without internal storage which means they don’t require vSAN licenses. They are available in the E, P, and V Series. VxRail dynamic nodes rely on an external storage resource as their primary storage. They can use external storage from Dell EMC storage arrays or from datastores shared by vSAN clusters using VMware vSAN HCI Mesh. With VxRail dynamic nodes in the fold, VCF on VxRail customers can include workload domains that use the existing enterprise storage arrays for their critical workloads without incurring vSAN license costs. For customers looking to optimize their vSAN resources, VxRail dynamic node clusters allow them to scale compute and storage independently for certain workloads like Oracle to reduce vSAN license costs.
To learn more about VxRail dynamic nodes, you can take a look at my previous blog about VxRail 7.0.240.
VxRail for the edge
As customers look to extend more to the edge to process information closer to where it is being collected, the VxRail portfolio is extending as well to help customers expand their VxRail footprint to maintain the operational consistency and simplicity from the core to the edge. The edge space covers a wide spectrum of IT infrastructure requirements – from just having scaled-down datacenter infrastructure at the edge to extreme remote locations where they can be space-constrained, power-constrained, bandwidth-constrained, or subject to harsh climate and use. While VxRail portfolio does not address the further ends of far edge, let’s walk through the deployment options available with the portfolio.
Starting with the scaled-down datacenter infrastructure, the VxRail cluster with vSAN may still be the right fit for some edge profiles. For locations such as regional engineering hubs or satellite university campuses, having a three or four-node cluster can provide the performance and availability required to meet the site needs.
Like Twix, the VxRail 2-node cluster with vSAN comes in two VxRail nodes with vSAN. When used with the E Series or D Series, the 2-node cluster is the smallest form factor for a vSAN cluster in the VxRail portfolio. This deployment type requires a witness appliance installed outside of the cluster for disaster recovery after a failed node comes back online.
As mentioned before, the D-series is the ruggedized VxRail node with much shorter depth at 20”. It’s a very interesting option at edge locations where space is limited or the ambient environment would be too much of a challenge for a typical datacenter solution. Let’s say in case you want to run a VxRail on an airplane that’s 15,000 feet (~4500 meters) above ground. You can find more details here.
With the newly announced VxRail satellite nodes, there is a great opportunity to extend the VxRail footprint even further to locations where, previously, it just was not the right fit whether it be cost-related, space-related, or the inability to even manage the infrastructure. VxRail satellite nodes are like the M&Ms in this VxRail bag of goodies. You can have a lot of them and they may look different on the outside but, at each core, it’s the same milk chocolatey center.
VxRail satellite nodes are single VxRail nodes designed to operate at the outer edges as an extension to a VxRail cluster with vSAN which manages them. For the retail industries, you can find them at retail shops that run your sales inventory, payment, and ordering applications. VxRail satellite nodes will be available on three VxRail models (E660, E660F, and V670F) and run the same VxRail HCI System Software as other VxRail deployment offerings. VxRail satellite nodes act as separate ESXi hosts. They do not run vSAN but have their own internal storage that is protected via an onboard RAID controller.
For edge locations where application availability is not as important as the cost, the VxRail satellite node is the most cost-effective VxRail solution. Satellite nodes are centrally managed by a VxRail cluster with vSAN, typically deployed at a regional datacenter. Virtual administrators can monitor the health of the satellite nodes, run health checks, and initiate node updates from a central location.
VxRail HCI System Software as the common denominator
Though the new offerings in the VxRail portfolio differ from what you normally view as a VxRail node, all VxRail nodes run the same VxRail HCI System Software. Like sugar for candy, once you have a taste you want more. The common operating model allows VxRail customers to confidently apply Continuously Validated States across their VxRail footprint to maximize their investment in VMware software in a secure way. VxRail HCI System Software continues to provide the peace of mind to allow our customers to innovate and transform their infrastructure as their workload demands evolve from the datacenter to the far reaches at the edge.
Conclusion
Unlike the sugar highs and lows that we all will get from consuming too much Halloween candy, this VxRail bag of goodies delivers the operational steadiness and consistency that will help our customers achieve the management bliss they’ll need for their IT infrastructure from the core to the edge. To learn more about VxRail deployment flexibility, listen to our latest podcast featuring Ash McCarty, Director of product management in VxRail platforms, as he provides a technical deep dive into the VxRail dynamic node and VxRail satellite node offerings.
Author Information
Daniel Chiu, Senior Technical Marketing Manager at Dell Technologies
LinkedIn: https://www.linkedin.com/in/daniel-chiu-8422287/