NCU Limits and Capacities

Monitoring your NCU usage and ensuring you get the most value out of your subscription

Starting on 4th June 2025, Nuvolos will move to the NCU limit model for tracking your NCU usage. Along with this, the center tile in the resources dashboard will change.

NCU capacity

The center tile in the resource monitoring dashboard shows details about your current NCU capacity.

New NCU Capacity tile — the NCU Limit start and end dates are shown below the current usage. Note the difference between the Resource Pool term start and end dates on the left tile.

NCU Limits

NCU Limits are pre-defined usage limits for "Included" size runs of Nuvolos applications. Every Nuvolos subscription comes with a total NCU limit that can be divided between the resource pools of the subscription.

Setting NCU Limits can be an efficient way of managing a Resource Pool's (or project) costs. NCU Limits are defined by the following information:

• NCU Limit (Capacity) - the number of NCU hours allocated for a specific period. Every time an application with an "Included" size mapped to this resource pool is run, it's using up from this capacity.
• NCU Limit Term Start - the start date when the NCU Limit takes effect. The limit takes effect at 00:00:00H of the start date.

• NCU Limit Term End - the end date when the NCU hours allocated expires. The expiry takes effect at 23:59:59H of the end date.

Tracking Your Consumption

The NCU Capacity tile tracks the total consumption of all the application sessions set to an "Included" size configuration. The progress bar shows a quick view of how much you have currently used since the start of the NCU Limit configured.

Total NCU consumption may not immediately match the NCU utilization information in the Plan Utilization tab, as the NCU consumption is calculated from the start of the NCU Limit term.

Exhausting your NCU Capacity

Once the limit is reached or the NCU Limit has expired, "Included" size application sessions:

• will be allowed to start, and

• running sessions will not be terminated.

However, credits will now be consumed as you have run out of NCU capacity. As you approach your NCU Limit exhaustion or expiry, an Account Manager will reach out to you to discuss your options.

Upon exhaustion of the current NCU Limit, applications will now consume credits.

Summary

• NCU hours consumption is applicable only for "Included" size configurations.

• NCU capacity consumption is dependent on the configuration of session:

  • Size (e.g. 4 CU, 16 CU etc.) plus,

  • Add-ons (e.g. Redis, Postgresql etc.).

• Credits will be used upon exhaustion of NCU Capacity.

Resource Pool and NCU Limit dates

NCU Limits can have different start and end dates from the Resource Pool term. For example:

Resource Pool A:

• Term Start: 2023-01-01

• Term End: 2025-12-31

• NCU Limit Start: 2025-01-01

• NCU Limit End: 2025-12-31

• NCU Capacity (Limit Hours): 100,000

• NCU Capacity Usage: 15,000

This resource pool has been active since 2023-01-01, but the current subscription was renewed with January 1, 2025. The capacity of 10,000 NCU hours applies to the 2025-01-01, 2025-12-31 interval.

Resource pools without NCU limits

Resource pools are allowed not to have an NCU limit configured - however, in that case, only applications with credit-based sizes are allowed to run there:

The dashboard tile displayed when a Resource Pool has no applicable NCU Limit.