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Dell PowerFlex Rack with PowerFlex 3.x Administration Guide

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PowerFlex rack deployment options

PowerFlex rack has several options for deployment.

PowerFlex runs on PowerFlex rack nodes to operate the management and customer storage and tie in workloads. PowerFlex has the following components:

  • Storage data client (SDC): Consumes storage from the PowerFlex rack
  • Storage data server (SDS): Contributes node storage to PowerFlex rack
  • PowerFlex metadata manager (MDM): Manages the storage blocks and tracks data location across the system
  • Storage data replication (SDR): Enables replication on PowerFlex storage-only nodes

PowerFlex enables flexible deployment options by allowing the separation of SDC and SDS components. It addresses data center workload requirements through the following PowerFlex rack deployment options:

Deployment type Description
Full hyperconverged

Consists of PowerFlex hyperconverged nodes, which contribute both compute and storage resources to the virtual environment.

Front-end (application) and back-end (storage) traffic share the same PowerFlex data networks. This includes PowerFlex hyperconverged nodes and PowerFlex storage-only nodes with NVMe.

NVDIMM data compression is supported on PowerFlex hyperconverged nodes and PowerFlex storage-only nodes.

Two-layer

Separates compute resources from storage resources, allowing the independent expansion of compute or storage resources.

Consists of PowerFlex compute-only nodes (supporting the SDC) and PowerFlex storage-only nodes (connected to and managed by the SDS). PowerFlex compute-only nodes host end-user applications. PowerFlex storage-only nodes contribute storage to the system pool.

Hybrid hyperconverged

Consists of PowerFlex hyperconverged nodes, PowerFlex compute-only nodes, and PowerFlex storage-only nodes. Some PowerFlex nodes contribute both compute resources and storage resources (PowerFlex hyperconverged nodes), some contribute only compute resources (PowerFlex compute-only nodes), and some contribute only storage resources (PowerFlex storage-only nodes).

Storage-only

Consists of nodes that contribute storage resources to the virtual environment. The back-end traffic shares the same PowerFlex data networks. The storage-only PowerFlex rack provide volumes to an external customer compute limited to Dell PowerEdge servers. storage data replication (SDR) is installed to enable native asynchronous replication on the PowerFlex storage-only nodes.

No SDC components are installed on these nodes.

Dual network

Consists of a solution that is integrated into your existing software-defined network (SDN), such as Cisco ACI. Only PowerFlex hyperconverged nodes and PowerFlex compute-only nodes are affected and have two NICs cabled to a pair of customer access/leaf switches. Aggregation switches by default are tied into the customer SDN border for L2/L3 access.

The solution uses two new customer access switches, two additional network ports on the host, and a new distributed virtual switch to carry traffic seamlessly into the software-defined network.

Two-layer deployments allow rebooting of VMware cluster nodes without PowerFlex ramifications.

When designing initial deployment or specifying later growth, use PowerFlex hyperconverged nodes if both PowerFlex compute-only nodes and PowerFlex storage-only nodes are needed. You can add PowerFlex compute-only nodes or PowerFlex storage-only nodes as needed.

To control the number of processors or cores, consider separating the compute for the application from the PowerFlex nodes that support storage. This deployment is a pure two-layer deployment. Extra workloads are supported or added on:
  • PowerFlex hyperconverged nodes
  • Two-layer PowerFlex compute-only nodes
  • PowerFlex storage-only nodes
This creates a hybrid deployment.

PowerFlex rack is configured with a single VMware vCenter, consisting of separate datacenters for controller and customer nodes. To access controller nodes, use the PowerFlex management controller. To access customer nodes, use the PowerFlex operating system for the customer cluster.


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