Introduction to datastore tiers

In private cloud, to group hypervisor datastores and price them according to service levels, use datastore tiers. 

• When you use tiers, administrators or cloud users can choose the service level for VM hard disks at the level of VM templates, virtual datacenters, and VMs. 
• When you perform VM or storage moves outside of Abiquo, the platform will synchronize disks to their new datastore tiers.
• If you do not enable datastore tiers feature, all datastore disks will be created in the "Default Tier".

You can add datastores to a tier when you add a hypervisor to the platform, or from the Datastore tiers tab.

• You can only add datastores to datastore tiers if they do not have any managed VM disks on them or if none of the disks are in a tier.

To restrict the use of datastore tiers, you can make them:

• Not allowed: an enterprise cannot use a tier that is not allowed, and they cannot create disks in this tier.
• Disabled: the administrator can disable a tier, for example, for maintenance, migration, or administrative reasons.

In widgets on the Dashboard, the platform will display tiers that are allowed, and tiers that are disabled.