Merge pull request #109095 from MashaMSFT/20200325_epfixes

adding notes about elastic pools

Author: GitHubber17

articles/sql-database/sql-database-dtu-resource-limits-elastic-pools.md

@@ -34,74 +34,94 @@ For SQL Database elastic pools, the following tables show the resources availabl
 | Included storage per pool (GB) | 5 | 10 | 20 | 29 | 39 | 78 | 117 | 156 |
 | Max storage choices per pool (GB) | 5 | 10 | 20 | 29 | 39 | 78 | 117 | 156 |
 | Max In-Memory OLTP storage per pool (GB) | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
-| Max number DBs per pool | 100 | 200 | 500 | 500 | 500 | 500 | 500 | 500 |
-| Max concurrent workers (requests) per pool | 100 | 200 | 400 | 600 | 800 | 1600 | 2400 | 3200 |
-| Max concurrent sessions per pool | 30000 | 30000 | 30000 | 30000 |30000 | 30000 | 30000 | 30000 |
+| Max number DBs per pool <sup>1</sup> | 100 | 200 | 500 | 500 | 500 | 500 | 500 | 500 |
+| Max concurrent workers (requests) per pool <sup>2</sup> | 100 | 200 | 400 | 600 | 800 | 1600 | 2400 | 3200 |
+| Max concurrent sessions per pool <sup>2</sup> | 30000 | 30000 | 30000 | 30000 |30000 | 30000 | 30000 | 30000 |
 | Min eDTUs choices per database | 0, 5 | 0, 5 | 0, 5 | 0, 5 | 0, 5 | 0, 5 | 0, 5 | 0, 5 |
 | Max eDTUs choices per database | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
 | Max storage per database (GB) | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
 ||||||||
 
+<sup>1</sup> See [Resource management in dense elastic pools](sql-database-elastic-pool-resource-management.md) for additional considerations.
+
+<sup>2</sup> For the max concurrent workers (requests) for any individual database, see [Single database resource limits](sql-database-vcore-resource-limits-single-databases.md). For example, if the elastic pool is using Gen5 and the max vCore per database is set at 2, then the max concurrent workers value is 200.  If max vCore per database is set to 0.5, then the max concurrent workers value is 50 since on Gen5 there are a max of 100 concurrent workers per vCore. For other max vCore settings per database that are less 1 vCore or less, the number of max concurrent workers is similarly rescaled.
+
 ### Standard elastic pool limits
 
 | eDTUs per pool | **50** | **100** | **200** | **300** | **400** | **800**|
 |:---|---:|---:|---:| ---: | ---: | ---: |
 | Included storage per pool (GB) | 50 | 100 | 200 | 300 | 400 | 800 |
 | Max storage choices per pool (GB) | 50, 250, 500 | 100, 250, 500, 750 | 200, 250, 500, 750, 1024 | 300, 500, 750, 1024, 1280 | 400, 500, 750, 1024, 1280, 1536 | 800, 1024, 1280, 1536, 1792, 2048 |
 | Max In-Memory OLTP storage per pool (GB) | N/A | N/A | N/A | N/A | N/A | N/A |
-| Max number DBs per pool | 100 | 200 | 500 | 500 | 500 | 500 |
-| Max concurrent workers (requests) per pool | 100 | 200 | 400 | 600 | 800 | 1600 |
-| Max concurrent sessions per pool | 30000 | 30000 | 30000 | 30000 | 30000 | 30000 |
+| Max number DBs per pool <sup>1</sup> | 100 | 200 | 500 | 500 | 500 | 500 |
+| Max concurrent workers (requests) per pool <sup>2</sup> | 100 | 200 | 400 | 600 | 800 | 1600 |
+| Max concurrent sessions per pool <sup>2</sup> | 30000 | 30000 | 30000 | 30000 | 30000 | 30000 |
 | Min eDTUs choices per database | 0, 10, 20, 50 | 0, 10, 20, 50, 100 | 0, 10, 20, 50, 100, 200 | 0, 10, 20, 50, 100, 200, 300 | 0, 10, 20, 50, 100, 200, 300, 400 | 0, 10, 20, 50, 100, 200, 300, 400, 800 |
 | Max eDTUs choices per database | 10, 20, 50 | 10, 20, 50, 100 | 10, 20, 50, 100, 200 | 10, 20, 50, 100, 200, 300 | 10, 20, 50, 100, 200, 300, 400 | 10, 20, 50, 100, 200, 300, 400, 800 |
 | Max storage per database (GB) | 500 | 750 | 1024 | 1024 | 1024 | 1024 |
 ||||||||
 
+<sup>1</sup> See [Resource management in dense elastic pools](sql-database-elastic-pool-resource-management.md) for additional considerations.
+
+<sup>2</sup> For the max concurrent workers (requests) for any individual database, see [Single database resource limits](sql-database-vcore-resource-limits-single-databases.md). For example, if the elastic pool is using Gen5 and the max vCore per database is set at 2, then the max concurrent workers value is 200.  If max vCore per database is set to 0.5, then the max concurrent workers value is 50 since on Gen5 there are a max of 100 concurrent workers per vCore. For other max vCore settings per database that are less 1 vCore or less, the number of max concurrent workers is similarly rescaled.
+
 ### Standard elastic pool limits (continued)
 
 | eDTUs per pool | **1200** | **1600** | **2000** | **2500** | **3000** |
 |:---|---:|---:|---:| ---: | ---: |
 | Included storage per pool (GB) | 1200 | 1600 | 2000 | 2500 | 3000 |
 | Max storage choices per pool (GB) | 1200, 1280, 1536, 1792, 2048, 2304, 2560 | 1600, 1792, 2048, 2304, 2560, 2816, 3072 | 2000, 2048, 2304, 2560, 2816, 3072, 3328, 3584 | 2500, 2560, 2816, 3072, 3328, 3584, 3840, 4096 | 3000, 3072, 3328, 3584, 3840, 4096 |
 | Max In-Memory OLTP storage per pool (GB) | N/A | N/A | N/A | N/A | N/A |
-| Max number DBs per pool | 500 | 500 | 500 | 500 | 500 |
-| Max concurrent workers (requests) per pool | 2400 | 3200 | 4000 | 5000 | 6000 |
-| Max concurrent sessions per pool | 30000 | 30000 | 30000 | 30000 | 30000 |
+| Max number DBs per pool <sup>1</sup> | 500 | 500 | 500 | 500 | 500 |
+| Max concurrent workers (requests) per pool <sup>2</sup> | 2400 | 3200 | 4000 | 5000 | 6000 |
+| Max concurrent sessions per pool <sup>2</sup> | 30000 | 30000 | 30000 | 30000 | 30000 |
 | Min eDTUs choices per database | 0, 10, 20, 50, 100, 200, 300, 400, 800, 1200 | 0, 10, 20, 50, 100, 200, 300, 400, 800, 1200, 1600 | 0, 10, 20, 50, 100, 200, 300, 400, 800, 1200, 1600, 2000 | 0, 10, 20, 50, 100, 200, 300, 400, 800, 1200, 1600, 2000, 2500 | 0, 10, 20, 50, 100, 200, 300, 400, 800, 1200, 1600, 2000, 2500, 3000 |
 | Max eDTUs choices per database | 10, 20, 50, 100, 200, 300, 400, 800, 1200 | 10, 20, 50, 100, 200, 300, 400, 800, 1200, 1600 | 10, 20, 50, 100, 200, 300, 400, 800, 1200, 1600, 2000 | 10, 20, 50, 100, 200, 300, 400, 800, 1200, 1600, 2000, 2500 | 10, 20, 50, 100, 200, 300, 400, 800, 1200, 1600, 2000, 2500, 3000 |
 | Max storage choices per database (GB) | 1024 | 1024 | 1024 | 1024 | 1024 |
 |||||||
 
+<sup>1</sup> See [Resource management in dense elastic pools](sql-database-elastic-pool-resource-management.md) for additional considerations.
+
+<sup>2</sup> For the max concurrent workers (requests) for any individual database, see [Single database resource limits](sql-database-vcore-resource-limits-single-databases.md). For example, if the elastic pool is using Gen5 and the max vCore per database is set at 2, then the max concurrent workers value is 200.  If max vCore per database is set to 0.5, then the max concurrent workers value is 50 since on Gen5 there are a max of 100 concurrent workers per vCore. For other max vCore settings per database that are less 1 vCore or less, the number of max concurrent workers is similarly rescaled.
+
 ### Premium elastic pool limits
 
 | eDTUs per pool | **125** | **250** | **500** | **1000** | **1500**|
 |:---|---:|---:|---:| ---: | ---: |
 | Included storage per pool (GB) | 250 | 500 | 750 | 1024 | 1536 |
 | Max storage choices per pool (GB) | 250, 500, 750, 1024 | 500, 750, 1024 | 750, 1024 | 1024 | 1536 |
 | Max In-Memory OLTP storage per pool (GB) | 1 | 2 | 4 | 10 | 12 |
-| Max number DBs per pool | 50 | 100 | 100 | 100 | 100 |
-| Max concurrent workers per pool (requests) | 200 | 400 | 800 | 1600 | 2400 |
-| Max concurrent sessions per pool | 30000 | 30000 | 30000 | 30000 | 30000 |
+| Max number DBs per pool <sup>1</sup> | 50 | 100 | 100 | 100 | 100 |
+| Max concurrent workers per pool (requests) <sup>2</sup> | 200 | 400 | 800 | 1600 | 2400 |
+| Max concurrent sessions per pool <sup>2</sup> | 30000 | 30000 | 30000 | 30000 | 30000 |
 | Min eDTUs per database | 0, 25, 50, 75, 125 | 0, 25, 50, 75, 125, 250 | 0, 25, 50, 75, 125, 250, 500 | 0, 25, 50, 75, 125, 250, 500, 1000 | 0, 25, 50, 75, 125, 250, 500, 1000|
 | Max eDTUs per database | 25, 50, 75, 125 | 25, 50, 75, 125, 250 | 25, 50, 75, 125, 250, 500 | 25, 50, 75, 125, 250, 500, 1000 | 25, 50, 75, 125, 250, 500, 1000|
 | Max storage per database (GB) | 1024 | 1024 | 1024 | 1024 | 1024 |
 |||||||
 
+<sup>1</sup> See [Resource management in dense elastic pools](sql-database-elastic-pool-resource-management.md) for additional considerations.
+
+<sup>2</sup> For the max concurrent workers (requests) for any individual database, see [Single database resource limits](sql-database-vcore-resource-limits-single-databases.md). For example, if the elastic pool is using Gen5 and the max vCore per database is set at 2, then the max concurrent workers value is 200.  If max vCore per database is set to 0.5, then the max concurrent workers value is 50 since on Gen5 there are a max of 100 concurrent workers per vCore. For other max vCore settings per database that are less 1 vCore or less, the number of max concurrent workers is similarly rescaled.
+
 ### Premium elastic pool limits (continued)
 
 | eDTUs per pool | **2000** | **2500** | **3000** | **3500** | **4000**|
 |:---|---:|---:|---:| ---: | ---: |
 | Included storage per pool (GB) | 2048 | 2560 | 3072 | 3548 | 4096 |
 | Max storage choices per pool (GB) | 2048 | 2560 | 3072 | 3548 | 4096|
 | Max In-Memory OLTP storage per pool (GB) | 16 | 20 | 24 | 28 | 32 |
-| Max number DBs per pool | 100 | 100 | 100 | 100 | 100 |
-| Max concurrent workers (requests) per pool | 3200 | 4000 | 4800 | 5600 | 6400 |
-| Max concurrent sessions per pool | 30000 | 30000 | 30000 | 30000 | 30000 |
+| Max number DBs per pool <sup>1</sup> | 100 | 100 | 100 | 100 | 100 |
+| Max concurrent workers (requests) per pool <sup>2</sup> | 3200 | 4000 | 4800 | 5600 | 6400 |
+| Max concurrent sessions per pool <sup>2</sup> | 30000 | 30000 | 30000 | 30000 | 30000 |
 | Min eDTUs choices per database | 0, 25, 50, 75, 125, 250, 500, 1000, 1750 | 0, 25, 50, 75, 125, 250, 500, 1000, 1750 | 0, 25, 50, 75, 125, 250, 500, 1000, 1750 | 0, 25, 50, 75, 125, 250, 500, 1000, 1750 | 0, 25, 50, 75, 125, 250, 500, 1000, 1750, 4000 |
 | Max eDTUs choices per database | 25, 50, 75, 125, 250, 500, 1000, 1750 | 25, 50, 75, 125, 250, 500, 1000, 1750 | 25, 50, 75, 125, 250, 500, 1000, 1750 | 25, 50, 75, 125, 250, 500, 1000, 1750 | 25, 50, 75, 125, 250, 500, 1000, 1750, 4000 |
 | Max storage per database (GB) | 1024 | 1024 | 1024 | 1024 | 1024 |
 |||||||
 
+<sup>1</sup> See [Resource management in dense elastic pools](sql-database-elastic-pool-resource-management.md) for additional considerations.
+
+<sup>2</sup> For the max concurrent workers (requests) for any individual database, see [Single database resource limits](sql-database-vcore-resource-limits-single-databases.md). For example, if the elastic pool is using Gen5 and the max vCore per database is set at 2, then the max concurrent workers value is 200.  If max vCore per database is set to 0.5, then the max concurrent workers value is 50 since on Gen5 there are a max of 100 concurrent workers per vCore. For other max vCore settings per database that are less 1 vCore or less, the number of max concurrent workers is similarly rescaled.
+
 > [!IMPORTANT]
 > More than 1 TB of storage in the Premium tier is currently available in all regions except: China East, China North, Germany Central, Germany Northeast, West Central US, US DoD regions, and US Government Central. In these regions, the storage max in the Premium tier is limited to 1 TB.  For more information, see [P11-P15 current limitations](sql-database-single-database-scale.md#p11-and-p15-constraints-when-max-size-greater-than-1-tb).