Dell VxRail Operate key terms

The management virtual appliance that runs inside each VxRail cluster and provides inventory, configuration, upgrade orchestration, and health views through its own UI and REST API. It brokers most lifecycle operations to vCenter and the underlying hosts.

The initial-setup workflow that discovers unconfigured nodes, validates them, and builds the first cluster by assigning management, vSAN, and VM traffic addresses along with vCenter and DNS details.

A REST interface exposed by VxRail Manager for automating cluster queries, configuration changes, and lifecycle operations. It is commonly used by scripts and orchestration tools instead of the graphical interface.

A set of VxRail nodes managed together under one vCenter and one VxRail Manager instance, sharing a vSAN datastore and presenting a single pool of compute and storage resources to workloads.

A single physical VxRail server in a cluster, containing compute, memory, local disks, and network adapters. The node count and model mix determine cluster capacity and resilience.

The software-defined storage pool formed from disks across cluster nodes. VMs store objects on it according to a storage policy rather than on a single host's local disk.

A rule set describing how vSAN should place and protect VM objects, such as how many failures to tolerate and whether to stripe. It is assigned per VM or per object.

A storage policy setting that states how many host or disk failures a VM object can survive while remaining available. It drives the number of data copies vSAN keeps.

The background process of rebuilding or rebalancing vSAN object components after a failure, disk replacement, or policy change. Progress and backlog are visible in vSAN health and resync monitors.

A built-in diagnostic suite that tests cluster components such as disk, network, and data consistency, and reports pass, warning, or failure results that guide troubleshooting.

An additional small appliance used in two-node clusters to hold witness components and break ties, allowing the cluster to maintain quorum and tolerate one node failure.

The majority agreement among cluster participants required to keep a vSAN cluster operational. Losing quorum makes the datastore inaccessible even if some hosts still run.

The coordinated process of upgrading VxRail software bundles, including VxRail Manager, vCenter, ESXi, and firmware, using pre-checks and staged sequencing to keep the cluster supported.

A packaged software release containing the component versions and firmware that VxRail validates as a compatible set, applied during lifecycle operations rather than upgrading parts individually.

An automated validation run before an upgrade that inspects cluster health, free space, password validity, and configuration drift, and blocks the operation when blocking issues are found.

The one-time process of taking factory-fresh nodes through discovery, network configuration, and cluster creation so the environment becomes a managed VxRail cluster.

The step in deployment where undeployed hosts are found on the network and claimed into the new cluster. Unreachable or misaddressed nodes are a common setup failure.

The network carrying host management, vCenter, VxRail Manager, and API traffic. Its addressing and VLAN must be reachable from administrators and from the VxRail Manager appliance.

The network used by guest virtual machines and by VMkernel services such as vMotion. It is typically separated from management traffic by VLANs and physical uplinks.

The live migration of a running VM between hosts with no downtime. It depends on a properly configured VMkernel interface and compatible CPU features across hosts.

Distributed Resource Scheduler, the vCenter feature that balances VM placement across hosts using rules and automation levels, and supports maintenance mode evacuations during upgrades.

A host state that evacuates running workloads so the host can be patched, rebooted, or serviced. In vSAN clusters, evacuation also moves storage components off the host.

A logical network segment that separates traffic types on shared physical links. VxRail deployment and later reconfiguration assign VLAN IDs to management, vSAN, and VM traffic.

Combining multiple physical uplinks into one logical connection for redundancy or throughput. Configuration must match on the switch and host side or traffic will fail.

A credential used by VxRail Manager and hosts to authenticate with vendor support services for remote monitoring, log collection, and case handling. It must be current for remote support to work.

A collected archive of logs from VxRail Manager, vCenter, and hosts used for diagnosis and support cases. Generating one is a standard first step in troubleshooting.

A built-in diagnostic tool that gathers system and component logs from VxRail nodes and the manager appliance, producing an archive for analysis or escalation.

The VxRail Manager view aggregating cluster, host, disk, and network status into alerts and recommendations, used to spot degradation before it becomes an outage.

Assigning permissions by job function so users see and change only what their role allows. In VxRail environments this spans vCenter roles, VxRail Manager accounts, and directory integration.

Single sign-on, the authentication mechanism that lets one identity reach vCenter and related components without separate logins. It is the basis for centralized account control.

The practice of granting only the permissions a user or service needs to do its job. It limits blast radius when credentials are misused or compromised.

The privileged local account on ESXi hosts and appliances. Its password should be rotated and stored securely, and routine work should use named accounts instead.

A signed credential that proves a service's identity and encrypts management traffic. Expired or mismatched certificates cause login and API failures across VxRail components.

Low-level software embedded in server components such as BIOS, controllers, and network adapters. VxRail bundles validate firmware versions as part of supported configurations.

The out-of-band management controller on Dell servers, giving console access, power control, and hardware health independent of the operating system, which is useful when hosts are unreachable.

The remote connectivity service that sends hardware telemetry and alerts from VxRail nodes to vendor support, enabling proactive case creation and faster diagnosis.

Adding nodes to an existing VxRail cluster to increase capacity, or expanding with a new cluster. It requires compatible models, firmware, and network addressing.

The preinstalled software state on a new VxRail node before deployment. Deviating from it, or manually reinstalling components, can break the supported upgrade path.

Restoring service after failure by replacing a node, rebuilding components, or restoring VxRail Manager, using documented procedures that preserve cluster supportability.