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Abiquo 5.0

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The Abiquo Storage Model

The Abiquo Storage Model consists of the following elements:

  • Apps library
  • Hypervisor datastores
  • External storage devices and public cloud storage

Apps Library

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

The Apps Library contains:

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

Hypervisor Datastores

A Hypervisor Datastore is mounted on the hypervisor and registered in Abiquo, usually in a service level called a datastore tier. When users deploy VMs in Abiquo, the virtual disk image is copied from the Apps library to the hypervisor datastore. For this reason, Abiquo recommends separating the Apps Library and the hypervisor datastores.

A hypervisor datastore contains:

  • Non-persistent VM system disks
  • Auxiliary hard disks

External Storage Devices

Abiquo volumes are virtual block devices that can be mounted on VMs. You can attach volumes through the Abiquo UI and the API. And then you can configure a volume as a physical disk in a VM.

Virtual storage types in private cloud:

  • 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 VMs in private cloud

In public cloud users can attach VM volumes according to the provider technology, for example, EBS disks in AWS and Managed Disks in Azure. For VM system disks in public cloud, the platform support hard disks only.

Storage Model Diagram

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