Dell EMC Solutions for Azure Stack HCI offer the following types of cluster infrastructure deployments:
This variant of Dell EMC Solutions for Azure Stack HCI offers two Storage Spaces Direct Ready Nodes in a back-to-back connected configuration for storage traffic. This infrastructure can be implemented with any of the validated and supported Storage Spaces Direct Ready Nodes.
Note: The two-node configuration that is built on Storage Spaces Direct Ready Nodes has been validated with back-to-back connections for storage connectivity. For more information about the back-to-back connected deployment model, see https://www.dell.com/azurestackhcimanuals.
The following figure illustrates the two-node hyperconverged back-to-back connected infrastructure:
Quick-start configurations for ROBO/Edge environments offer an easily deployed and affordable starter infrastructure that includes deployment services and support. Quick-start configurations support only four Storage Spaces Direct Ready Nodes in the cluster configuration and fixed network component configuration.
This quick-start solution is available in both hybrid and all-flash configurations, each of which has three sizes—small, medium, and large. The solution is built on the R740xd Storage Spaces Direct Ready Node (for hybrid) and R640 Storage Spaces Direct Ready Node (for all-flash).
The following figure illustrates the quick-start solution architecture:
The solution includes a highly compact, redundant dual-switch fabric in a 1U form factor. The Dell EMC Networking S4112F-ON switch supports a dedicated network topology for both storage and management.
For more information about Dell EMC Solutions for Azure Stack HCI, see the Dell EMC Ready Solutions for Azure Stack HCI Solution Overview.
The scalable offering within Dell EMC Solutions for Azure Stack HCI encompasses various configurations of R740xd, R740xd2, R440, and R640 Storage Spaces Direct Ready Nodes. In this HCI solution, as many as 16 Ready Nodes power the primary compute cluster.
The following figure illustrates one of the flexible solution architectures. It includes the compute cluster, redundant top-of-rack (ToR) switches, a separate out-of-band (OOB) network, and an existing management infrastructure in the data center.
Dell EMC Solutions for Azure Stack HCI do not include management infrastructure components such as a cluster for hosting management VMs and services such as Microsoft Active Directory, Domain Name System (DNS), Windows Server Update Services (WSUS), and Microsoft System Center components such as Operations Manager (SCOM). Therefore, the instructions in this guide do not include deployment of any of these services and components and assume that at least an Active Directory domain controller is available in the existing management infrastructure. In a remote office scenario, Dell EMC recommends that you deploy either an Active Directory replica or Ready-Only Domain Controller (RODC) at the remote office. If you are using an RODC at the remote site, connectivity to the central management infrastructure with a writeable domain controller is mandatory during deployment of the Azure Stack HCI cluster.
Note: Dell EMC does not support expansion of a two-node cluster to a larger cluster size. A three-node cluster provides fault-tolerance only for simultaneous failure of a single node and a single drive. If the deployment requires future expansion and better fault tolerance, consider starting with a four-node cluster at a minimum.
Note: For recommended server and network switch placement in the racks, port mapping on the top-of-rack (ToR) and out-of-band (OOB) switches, and details about configuring the ToR and OOB switches, see https://community.emc.com/docs/DOC-70310.
This deployment guide provides instructions and PowerShell commands for manually deploying an Azure Stack HCI cluster. For information about configuring host networking and creating an Azure Stack HCI cluster by using System Center Virtual Machine Manager (VMM), see https://community.emc.com/docs/DOC-75346.