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TechBook—Dell EMC VxRail System

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Dell EMC VxRail
VxRail overview What is in a VxRail system? The VxRail advantage Where does VxRail fit in your environment?

What is in a VxRail system?

  • Dell EMC VxRail systems offer a choice of Dell EMC PowerEdge servers, powered by new Intel® Scalable® processors, variable RAM, and storage capacity, allowing customers to buy what they need now. The VxRail system uses a modular, distributed system architecture that starts with as few as two nodes and scales near linearly up to 64 nodes. Single-node scaling and storage capacity expansion provide a predictable, “pay-as-you-grow” approach for future scale up and out as business and user requirements evolve.

    Additional services that come with VxRail include RecoverPoint for VMs (RP4VM) replication and Dell EMC Remote Secure Services (SRS).

    Benefits of VMware software for HCI

    The VxRail software layers use VMware technology for server virtualization and software-defined storage. VxRail nodes are configured as ESXi hosts, and VMs and services communicate using the virtual switches for logical networking.

    VxRail systems are optimized for VMware vSAN software, which is fully integrated in the kernel of vSphere and provides full-featured and cost-effective software-defined storage. vSAN implements an efficient architecture, built directly into hypervisor. This distinguishes vSAN from solutions that typically install a virtual storage appliance (VSA) that runs as a guest VM on each host. Embedding vSAN into the ESXi kernel layer has advantages in performance and memory requirements. It has little impact on CPU utilization (less than 10 percent) and self-balances based on workload and resource availability. It presents storage as a familiar data store construct and works seamlessly with other vSphere features such as VMware vSphere vMotion and Storage Policy Based Management to provide the flexibility to easily configure the appropriate level of service for each VM.

    vSphere is a well-established virtualization platform, a familiar usable entity in most data centers. Dell EMC leverages vSphere for ESXi-based virtualization and VM networking in multiple product offerings, and they support a common set of VMware and Dell EMC services. This enables a VxRail implementation to integrate smoothly into VMware-centric data centers and to operate in concert with Dell EMC converged, hyperconverged, and traditional storage offerings. NSX for SDN can optionally be added to the VxRail solution. VMware NSX Data Center transforms the network in a similar way in how vSphere and vSAN transform compute and storage respectively. It provides much more flexibility, agility, and security to overcome limitations of the physical network architecture.

    For more information about VMware software, see Additional resources.