Subnets defined in SDDC Manager for one layer 2 domain. Hosts joining a VCF domain get static IPs from it automatically for their vMotion and vSAN/NFS/iSCSI VMkernel adapters.
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Terms in this definition
- SDDC Manager
Per-instance VCF appliance that automates jobs such as workload domain deployment, lifecycle of ESX, NSX and vCenter, importing vCenter, stretching clusters, and handling passwords and certificates. VCF 9.0 positions it within VCF Operations, whose console is replacing its separate UI.
- L2
Layer 2 of the OSI model, the data link layer of frames, VLANs and MACs. An NSX segment is one broadcast domain at this layer.
- Domain
A way of grouping workspaces by area of the business, in support of a data mesh approach. Items take on their workspace's domain, letting you filter the OneLake catalog by it, and certain tenant settings can be passed to domain admins; domains have no effect on access permissions.
- VCF domain
A single vCenter together with the storage, switching, NSX Manager and clusters it controls. Every VCF Instance has one for management, plus optional extra ones for workloads.
- Get
Key Vault permission on secrets that allows a single secret to be read; App Service Key Vault references need nothing beyond it.
- vMotion
Moves a running VM to another host with no downtime; its storage counterpart, Storage vMotion, relocates the files between datastores instead.
- VMkernel
At the heart of ESX sits this kernel. Network access for host services (iSCSI, NFS, vSAN, vMotion, management and so on) goes through VMkernel adapters, also called vmknics.
Related terms
- Host commissioning
Bringing ESX hosts into the SDDC Manager inventory of VCF, where they are validated and linked to a principal storage type and a network pool so clusters can use them. Decommissioning takes unassigned hosts back out.
- Host decommissioning
Deleting ESX hosts that no longer belong to a domain from VCF. Hosts which cannot be reached at the VMkernel clean-up step are deleted anyway, so their IPs might remain taken within the network pool.
- PSOD
Purple diagnostic screen. An ESX host that crashes freezes on it. Should an administrator afterwards delete that host from the SDDC Manager database manually, IP addresses in the network pool may be left leaked.
- UNASSIGNED
Status for a commissioned ESX host that shows in Unassigned Hosts in SDDC Manager. A network pool is attached, but no workload domain cluster has taken the host in yet.