Glossary
This glossary connects the names shown by hv to the objects an administrator operates. Use it when a Task, error or command refers to an unfamiliar object. The concepts chapter explains their relationships; the task chapters explain how to change them. Before using a reference in a command, confirm its object type and Pool rather than relying only on its display name.
| Term | Meaning |
|---|---|
| Account | A human or API identity in one Silo; separate from dom0 root and VM operating-system logins. |
| ACL | A grant of a Fleet role to an Account or Group on a supported infrastructure target. |
| Coordinator | The Host holding xapi's Pool coordinator role; some commands retain the name master. |
| dom0 | Xen's privileged control domain on a Host. It runs the management operating system and toolstack. |
| Edge | hv's proxy appliance VM and associated management state. Public-NIC handover is unavailable as a complete administration workflow in this release. |
| Fleet | The infrastructure managed by one hv deployment, including its Pools and Silos. |
| Group | Accounts collected within one Silo for access management. |
| Host | A physical machine running Xen, dom0, xapi and hv-agent. |
| Image | A Template presented as a VM boot source, owned by a Project or shared through a Silo or Catalog. |
| IOMMU | Optional hardware address translation and isolation, required for PCI and SR-IOV passthrough. Without it, the Host runs dom0 in PV mode. |
| Network | Layer-2 connectivity for VM NICs within a Pool. |
| PBD | The connection between a Host and an SR. |
| PIF | A Host interface connected to a Network, including supported physical, VLAN or bond forms. |
| Pool | Hosts managed under one xapi coordinator. |
| Project | Ownership container for a team's VMs, disks, Images, Snapshots and VPCs within a Silo. |
| PV / PVH | The supported dom0 modes. A requested mode change takes effect on reboot. |
| Release repository | A signed release source with a root-key identity and channels; unrelated to VM disk storage. |
| Remote | A destination or source for backup data. |
| Retention | Rules deciding which backup points remain, while preserving required dependencies. |
| Silo | A tenant boundary containing Accounts, Groups and Projects. |
| Snapshot | A point-in-time VM copy; it can depend on the same SR as the original. |
| SR | Storage repository containing VDIs. |
| Task | A long-running operation and its progress, final state and result. |
| Template | A VM definition used to create VMs. |
| VBD | A VM's disk attachment at a device position. |
| VDI | A virtual disk image stored in an SR. |
| VIF | A VM's virtual NIC on a Network. |
| VM | A virtual machine, distinct from a Template or Snapshot. |
| VPC | A Project-owned private overlay Network; it does not supply routing or DHCP by itself. |
When an error names a PBD, inspect Host access to the SR; when it names a VBD, inspect the VM's disk attachment. If several objects share a name, select by UUID or exact reference and explicitly name the Pool. This avoids directing a recovery action at the wrong resource.