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Complete List of Managed Object Types in VMware vSphere API

The following tables list all the managed object types in VI 3.5, vSphere 4 and 4.1. A short description is provided for each type explaining its major responsibilities.

Note that the managed object types are added in an incremental way. The types in older versions are still supported in newer versions. The complete types in a verion include ones in the correpsonding table plus all the ones in all older version tables.

Time to learn how to "Google" and manage your VMware and clouds in a fast and secure


Hope this post gives you a high level¬†overview of functionalities of the vSphere APIs. Check out other blogs such as best practices (1-5, 6-10)¬†on how to use them in general. And don’t forget my book which introduces them extensively with many read to use samples.

Table 1 Managed Object Types in VI 3.5

Managed Object Types Explanation
Alarm Defines an alarm that is triggered and an action that occurs due to the triggered alarm when certain conditions are met on a specific ManagedEntity object.
AlarmManager Represents a singleton object for managing alarms within a service instance.
AuthorizationManager Provides operations to query and update roles and permissions.
ClusterComputeResource Represents a cluster of HostSystem objects as a unified compute resource for virtual machines.
ComputeResource Represents a set of physical compute resources for virtual machines.
ContainerView Represents a view convenient for monitoring the contents of a single container.
CustomFieldsManager Adds and removes custom fields to managed entities.
CustomizationSpecManager Manages customization specifications stored on the VirtualCenter server.
Datacenter Represents the interface to the common container object for hosts and virtual machines. Every host and virtual machine must be under a distinct datacenter in the inventory, and datacenters may not be nested under other datacenters.
Datastore Represents a storage location for virtual machine files. A storage location can be a VMFS volume, a directory on Network Attached Storage, or a local file system path.
DiagnosticManager Provides an interface to get low-level debugging logs or diagnostic bundles for a server. For VirtualCenter, this includes the log files for the server daemon. For an ESX Server host, this includes detailed log files for the VMkernel.
EnvironmentBrowser Provides access to the environment that a ComputeResource presents for creating and configuring a virtual machine.
EventHistoryCollector Retrieves historical data and updates when the server appends new events.
EventManager Provides properties and methods for event management support. Event objects are used to record significant state changes of managed entities.
ExtensibleManagedObject Represents the extensible managed object base interface, mainly for managing custom fields.
ExtensionManager Provides registration and basic management services for all extensions.
FileManager (*) Manages and manipulates files and folders on datastores.
Folder Represents the container object type to manage entities in the inventory.
HistoryCollector Retrieves historical data and receives updates when the server appends new data to a collection.
HostAutoStartManager Invokes and sets up the auto-start/auto-stop order of virtual machines on a single host.
HostBootDeviceSystem Queries and changes the current system boot device configuration.
HostCpuSchedulerSystem Gathers and configures the host CPU scheduler policies that affect the performance of running virtual machines.
HostDatastoreBrowser Provides access to the contents of one or more datastores. The items in a datastore are files that contain configuration, virtual disk, and other data associated with a virtual machine.
HostDatastoreSystem Creates and manages datastores from the host.
HostDateTimeSystem Provides service to query and manage date/time-related configuration on a host.
HostDiagnosticSystem Configures the diagnostic mechanisms specific to the host.
HostFirewallSystem Manages the firewall configuration of the host.
HostFirmwareSystem (*) Provides access to the firmware of an embedded ESX host to back up/restore/reset the configuration.
HostHealthStatusSystem Manages the health state of the host.
HostLocalAccountManager Manages local accounts on a host.
HostMemorySystem Configures and gathers the host memory management policies that affect the performance of running virtual machines.
HostNetworkSystem Represents the networking system in a host.
HostPatchManager Represents the path manager of a host that can scan and patch the host.
HostServiceSystem Queries and manages the configuration of host services.
HostSnmpSystem Queries and configures SNMP agent configuration on a host.
HostStorageSystem Represents the storage subsystem in a host. It can be used to query and manage the storage attached to a host.
HostSystem Represents a virtualization host platform. It can be used to operate and manage the host.
HostVMotionSystem Queries and configures the VMotion configuration of a host.
InventoryView Browses the inventory and tracks changes to open folders.
LicenseManager Queries and manages license configuration.
ListView Gets updates on an arbitrary set of objects.
ManagedEntity Represents the abstract base type for all managed objects in the inventory tree.
ManagedObjectView Represents the base type for view objects that expose a set of managed objects.
Network Represents a network accessible by either hosts or virtual machines.
OptionManager Manages key/value pair options.
PerformanceManager Queries performance statistics.
PropertyCollector Retrieves and monitors a set of properties from one or more managed objects.
PropertyFilter Controls the properties that a collector retrieves and observes changes.
ResourcePool Represents a set of physical resources: a single host, a subset of a host’s resources, or resources spanning multiple hosts. Resource pools can be subdivided by creating child resource pools. To run, a virtual machine must be associated as a child of a resource pool.
ScheduledTask Schedules a task to run in the future.
ScheduledTaskManager Creates and retrieves a ScheduleTask.
SearchIndex Provides fast search service to obtain an item, typically a virtual machine or a host, in the inventory by UUID, IP address, and so on.
ServiceInstance Represents the singleton server-side root object for the whole interactive session. From this object, you can obtain the inventory and various services.
SessionManager Manages client sessions.
Task Represents an operation that takes time and might be canceled.
TaskHistoryCollector Retrieves historical data and updates related to tasks.
TaskManager Retrieves and manages tasks.
UserDirectory Discovers and verifies users in the underlying user directory.
View Represents the base type for all the views that track changes of a set of managed objects.
ViewManager Provides access to managed objects that make accessing objects and providing updates more convenient for specific use cases.
VirtualDiskManager(*) Manages and manipulates virtual disks on datastores.
VirtualMachine Represents the virtual machine.
VirtualMachineSnapshot Represents a snapshot of a virtual machine.

Note: * Experimental feature in VI SDK 2.5.

Table 2 New Managed Object Types in vSphere 4

Managed Object Types Explanation
ClusterProfile Represents the profile for configuring the cluster.
ClusterProfileManager Manages the cluster profiles.
DistributedVirtualPortgroup Represents the distributed virtual portgroup objects.
DistributedVirtualSwitch Represents the distributed virtual switch objects.
DistributedVirtualSwitchManager Manages the virtual switches.
HostKernelModuleSystem* Controls the configuration of kernel modules on the host.
HostPciPassthruSystem; Manages the PciPassthru state of the host.
HostProfile Configures the host.
HostProfileManager Manages the host profiles.
HostVirtualNicManager Manages the special v-NIC configuration of the host.
HttpNfcLease Represents a lease on a VirtualMachine or a VirtualApp that can be used to import or export disks for the entity.
IpPoolManager Manages and allocates IP addresses to vApps.
LicenseAssignmentManager Manages licenses in a new licensing model.
LocalizationManager Provides all the message catalogs for client-side localization of messages.
OvfManager Provides services to parse and generate OVF descriptors.
Profile Represents the base type for profiles for configuring the cluster and host.
ProfileManager Represents the base type for managing profiles.
ProfileComplianceManager Manages the compliance of entities against profiles.
ResourcePlanningManager Estimates the database size required to store vCenter data.
VirtualApp Represents a collection of virtual machines that consist of a software solution.
VirtualMachineCompatibilityChecker Checks the compatibility of a virtual machine with a host.
VirtualMachineProvisioningChecker Checks the feasibility of certain provisioning operations.
VmwareDistributedVirtualSwitch Represents the VMware implementation of the virtual switch.

Note: * HostKernelModuleSystem was first introduced in VI API 2.5u2.

Table 3 New Managed Object Types in vSphere 4.1

Managed Object Types Explanation
HostActiveDirectoryAuthentication Indicates domain membership status and provides methods to add and remove a host to/from a domain.
HostAuthenticationManager provides access to Active Directory configuration information for an ESX host.
HostAuthenticationStore base class represents both local user and host Active Directory authentication for an ESX host.
HostDirectoryStore base class for directory-based authentication stores.
HostLocalAuthentication represents local authentication for user accounts on an ESX host.
HostPowerSystem Managing host power management policies
StorageResourceManager Provides services to configure and query resource usage for storage resources

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