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Abiquo 2.6

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The Abiquo Storage Model

The Abiquo Storage Model consists of the following elements:

  • Apps library
  • Hypervisor datastores
  • External storage devices

Apps Library

The Applications or Appliance Library is contained on the NFS/CIFS Repository. Install one NFS/CIFS Repository per Abiquo datacenter (physical datacenter).

The Apps Library contains:

  • Virtual machine templates that users will deploy in the cloud, which include:
    • Virtual machine template conversions generated by Abiquo for all hypervisor types
    • Virtual machine instances, which are snapshot copies of virtual machines running in the cloud

Hypervisor Datastores

A Hypervisor Datastore is mounted on the hypervisor and registered in Abiquo. When users deploy virtual machines in Abiquo, the virtual disk image is copied from the Appliance Library to the hypervisor datastore. For this reason, Abiquo recommends separating the Apps Library and the hypervisor datastore.

A hypervisor datastore contains:

  • Non-persistent virtual machine system disks
  • Auxiliary user hard disks

External Storage Devices

Abiquo volumes are virtual block devices that can be mounted on virtual machines. The virtual machines see these volumes as physical disks and they can be attached through the Abiquo GUI and the API.

Virtual storage types:

  • Managed Storage or Integrated Storage, for providing users with Storage as a Service
    • iSCSI
    • NFS
  • Generic iSCSI Storage, for providing users with preconfigured volumes

External storage can contain the following virtual storage types:

  • Persistent virtual storage volumes of user data
  • Persistent virtual machines

Storage Model Diagram

The following diagram gives an overview of the Abiquo Storage Model.