The VxRail-managed VMware vCenter Server and customer-managed VMware vCenter Server have different characteristics that are related to VxRail cluster usability and supportability.
Consider the following factors when you decide on the type of VMware vCenter Server:
Licensing
With the VxRail-managed VMware vCenter Server, a Standard VMware vCenter Server license is exclusive to this VMware vCenter instance and cannot be transferred to another instance. Therefore, the license should be considered a limited or restricted-use VMware vCenter Server license. You are responsible for licensing the customer-managed VMware vCenter Server.
Compatibility
The VMware vCenter Server instance that is bundled with the VxRail software and deployed during the initial build process is compatible with the VxRail software stack. The VxRail software stack includes VMware vSphere.
For VxRail 7.0.130 and later versions, VxRail Manager does not validate whether a customer-managed VMware vCenter Server is compatible with the VxRail software stack. To confirm that your customer-managed VMware vCenter Server is running the minimum compatible version before commencing the initial build, see the
VxRail and Customer-managed VMware vCenter Server (External vCenter) Interoperability Matrix.
Deployment and initial configuration
The VxRail initial build process automates the deployment of the VMware vCenter Server and performs the initial configuration steps to support the VxRail cluster.
For VxRail 7.0.130 and later, this VxRail-managed VMware vCenter Server manages standard clusters, 2-node clusters, or stretched clusters from a single embedded VMware vCenter instance.
With the customer-managed VMware vCenter Server, you are responsible for certain prerequisites before starting the VxRail build to prepare VMware vCenter for cluster activation and operations.
Lifecycle management
VxRail Manager orchestrates the lifecycle management of the VxRail-managed VMware vCenter Server.
You are responsible for life cycle management of the customer-managed VMware vCenter Server. As per VMware best practices, the VMware vCenter Server instance is upgraded before performing life cycle management on a VxRail cluster. Follow the guidance in the VxRail release notes to identify the supported VMware vCenter Server version based on the target VxRail version. For best practice order for upgrades, see
Overview of the vSphere Upgrade Process.
VMware vCenter Server migration
You cannot migrate a VxRail-managed VMware vCenter Server off the VxRail cluster, but you can migrate a customer-managed VMware vCenter Server to a VxRail cluster.
VxRail life cycle management does not support the upgrades of customer-managed VMware vCenter Server instances, even if relocated on a VxRail cluster. You are responsible for all upgrades and maintenance of this VMware vCenter Server instance.
Host management
A VxRail-managed VMware vCenter Server is restricted to only managing VxRail clusters and cannot support the addition of other ESXi hosts under its management. Lifecycle management can be disrupted because VxRail Manager has no visibility of these outside hosts.
There are no restrictions about placing additional ESXi hosts under the management of a customer-managed VMware vCenter Server.
Multihoming
VxRail-managed VMware vCenter Server supports only one public IP address, and cannot be configured to support High Availability.
There are no multihoming restrictions on a customer-managed VMware vCenter Server.
SSO domain
VxRail-managed VMware vCenter Server supports the vsphere.local SSO domain only. There are no domain restrictions with a customer-managed VMware vCenter Server.
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