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Supported storage capacities in Keystone

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The NetApp Keystone STaaS service capacities include:

Logical capacity

This is the data placed on the Keystone infrastructure by a customer. All Keystone capacities refer to a logical capacity.
For example, if a 1 TiB file is stored on the Keystone infrastructure then a minimum of 1 TiB of capacity should be purchased.

Committed capacity

The minimum logical capacity billed each month during the subscription:

  • Capacity is committed to each service level.

  • Committed capacity and additional service levels can be added during the term.

Changes to committed capacity

During the tenure of a subscription, you can change the committed capacities. However, there are certain preconditions:

  • The committed capacity can be decreased based on certain conditions. For information, see Capacity reduction.

  • The committed capacity cannot be increased 90 days prior to the expiry of your subscription, unless the subscription is to be renewed for an additional 12-month term.

  • You can request changes to committed capacity through the BlueXP interface or through Keystone Success Manager (KSM).
    For information about requesting changes, see NetApp Global Services Support Center.

Consumed capacity

Consumed capacity refers to the capacity (in TiB of storage) currently being consumed on the service.
Keystone service considers the sum of the logical used sizes (not the physical capacity used) of all volumes on a particular service level to calculate the consumed capacity for that service level.

Burst capacity

Keystone service enables you to use additional capacity on top of the committed capacity for a service level. This is the burst capacity usage. Note these points:

  • Burst capacity is agreed upon in the Keystone agreement. It is usually set up to 20% above the committed capacity, and is charged at the same rate as the committed capacity.

  • Burst capacity can be consumed on an elastic basis and is charged on a daily basis for the consumed average.

Billed capacity

Monthly bill = (committed capacity [TiB] * committed rate [$/TiB]) + (daily average provisioned burst capacity [TiB] * burst rate [$/TiB]). The monthly bill contains a minimum charge based on the committed capacity.

The monthly bill varies beyond the minimum charge based on daily average burst capacity consumption.