What is Power BI Premium Gen2?
Power BI Premium Generation 2, referred to as Premium Gen2, is the second generation of Power BI Premium. Premium Gen2 provides additional enhancements to Power BI, and a comprehensive portfolio of Premium features.
The following table lists some of the Premium Gen2 enhancements.
|Purchase Premium for individuals in your organization||See Power BI Premium Per User (PPU).|
|Improved metrics||Capacity performance depends only on the amount of CPU usage. Metrics can be easily understood using the Power BI Premium Capacity Utilization and Metrics app.|
|Autoscale||An optional feature that prevents slowdowns caused by throttling on overloaded capacities. When enabled, if the load on the capacity exceeds the capacity limits, autoscale automatically adds one v-core at a time for 24-hour periods. Additional v-cores are charged to your Azure subscription on a pay-as-you-go basis.|
Capacities and SKUs
Capacity is a dedicated set of resources reserved for exclusive use. It offers dependable, consistent performance for your content.
Each capacity offers a selection of SKUs, and each SKU provides different resource tiers for memory and computing power. The type of SKU you require, depends on the type of solution you wish to deploy.
The table below describes the resources and limits of each SKU.
|Capacity SKUs||V-cores||Max memory (GB)1, 2, 3||DirectQuery/Live connection (per second)1, 2||Max memory per query (GB)1, 2||Model refresh parallelism2||Dataflow parallel tasks5||Max concurrent pages6|
1 The Power BI Premium Utilization and Metrics app doesn't currently expose these metrics.
2 These limits only apply to the dataset workload per capacity.
3 The Max memory (GB) column under the Dataset header represents an upper bound for the dataset size. However, an amount of memory must be reserved for operations such as refreshes and queries on the dataset. The maximum dataset size permitted on a capacity might be smaller than the numbers in this column. For more information, see Memory allocation.
4 These SKUs aren't available in all regions. To request using these SKUs in regions where they're not available, contact your Microsoft account manager.
5 Learn more about parallel tasks in dataflows.
6 See Export Power BI report to file for more information about Power BI interactive (not paginated) reports.
Subscriptions and licensing
Power BI Premium Gen2 is a tenant-level Microsoft 365 subscription, available in two SKU (Stock-Keeping Unit) families.
|Use||Enterprise features and embedding||Organizational embedding (embed for your organization)|
|Commitment||Monthly or yearly||Yearly|
|Additional information||Includes a license to install Power BI Report Server on-premises||EM1 and EM2 SKUs are available only through volume licensing plans. You can't purchase them directly.|
Power BI Premium subscriptions are purchased by administrators in the Microsoft 365 admin center. Specifically, only global administrators or billing administrators can purchase SKUs. When purchased, the tenant receives a corresponding number of v-cores to assign to capacities, known as v-core pooling. For example, purchasing a P3 SKU provides the tenant with 32 v-cores. To learn more, see How to purchase Power BI Premium.
Workspaces reside within capacities. Each Power BI user has a personal workspace known as My Workspace. Additional workspaces known as workspaces can be created to enable collaboration. By default, workspaces, including personal workspaces, are created in the shared capacity. When you have Premium capacities, both My Workspaces and workspaces can be assigned to Premium capacities.
Capacity administrators automatically have their My workspaces assigned to Premium capacities.
Dataset memory allocation
With Premium Gen2 and Embedded Gen2, there's a limit on the memory available for each dataset based on the SKU. For example, in a Premium Gen2 P1 capacity, any dataset that exceeds 25 GB in memory usage would result in failures. You can find the dataset memory upper limits for each SKU, in the Max memory per dataset column of the Capacities and SKUs table.
Dataset operations such as queries are subject to individual memory limits. To illustrate the restriction, consider a dataset with an in-memory footprint of 1 GB, and a user initiating an on-demand refresh while interacting with a report based on the same dataset. Three separate actions determine the amount of memory attributed to the original dataset, which may be larger than two times the dataset size. The total amount of memory used by one Power BI item can't exceed the SKU's Max memory per dataset allocation.
Loading the dataset - The first action is loading the dataset into the memory.
Refreshing the dataset - The second action is refreshing the dataset after it's loaded into the memory. The refresh operation will cause the memory used by the dataset to double. The required memory doubles because the original copy of data is still available for active queries, while another copy is being processed by the refresh. Once the refresh transaction commits, the memory footprint will reduce.
Interacting with the report - The third action is caused by the user's interaction with the report. During the dataset refresh, report interactions will execute DAX queries. Each DAX query consumes a certain amount of temporary memory required to produce the results. Each query may consume a different amount of memory. The memory used to query the dataset is added to the memory needed to load the dataset, and refresh it.
Premium Gen2 and Embedded Gen 2 don't require cumulative memory limits, and therefore concurrent dataset refreshes don't contribute to resource constraints. However, refreshing individual datasets is governed by existing capacity memory and CPU limits, and the model refresh parallelism limit for the SKU, as described in Capacities and SKUs.
You can schedule and run as many refreshes as required at any given time, and the Power BI service will run those refreshes at the time scheduled as a best effort.
When monitoring Premium Gen2 and Embedded Gen2, you only need to take into consideration one aspect: how much CPU your capacity requires to serve the load at any moment. To monitor your capacity, use the Power BI Premium Capacity Utilization and Metrics app.
Here's what happens when you exceed your CPU limit per the SKU size you purchased:
Memory - There's no memory management for Paginated reports.
SKU availability - Paginated reports running on Premium Gen2 can run reports across all available embedded and Premium SKUs, including the EM1-EM3 and A1-A3 SKUs. Billing is calculated per CPU hour, across a 24-hour period.
Enhanced security and code isolation - Code isolation occurs at a per-user level, rather than at a per-capacity level.
Considerations and limitations
The following known limitations currently apply to Premium Gen2.
Rendering visuals - There's a 225-second limitation for rendering Power BI visuals. Visuals that take longer to render, will be timed-out and won't display.
Throttling - Throttling can occur in Power BI Premium capacities. Concurrency limits are applied per session. An error message will appear when too many operations are being processed concurrently. To mitigate throttling, you can use autoscale. When autoscale is enabled, if CPU consumption exceeds the additional limits, throttling will still take place.
Client library version - Client applications and tools that connect to and work with datasets on Premium Gen2 capacities through the XMLA endpoint require Analysis Services client libraries. Most client applications and tools install the most recent client libraries with regular updates, so manually installing the client libraries isn't usually necessary. Regardless of the client application or tool version, the following minimum client library versions are required.
Client Library Version MSOLAP 184.108.40.206 AMO 220.127.116.11 ADOMD 18.104.22.168
In some cases, manually installing the most recent client libraries may be necessary to reduce potential connection and operation errors. To learn more about verifying existing installed client library versions and manually installing the most recent versions, see Analysis Services client libraries.