Resource limits for single databases using the vCore purchasing model
This article provides the detailed resource limits for Azure SQL Database single databases using the vCore purchasing model.
For DTU purchasing model limits for single databases on a SQL Database server, see Overview of resource limits on a SQL Database server.
You can set the service tier, compute size, and storage amount for a single database using the Azure portal, Transact-SQL, PowerShell, the Azure CLI, or the REST API.
Important
For scaling guidance and considerations, see Scale a single database.
General purpose - serverless compute - Gen5
The serverless compute tier is currently available on Gen5 hardware only.
Gen5 compute generation (part 1)
| Compute size | GP_S_Gen5_1 | GP_S_Gen5_2 | GP_S_Gen5_4 | GP_S_Gen5_6 | GP_S_Gen5_8 |
|---|---|---|---|---|---|
| Compute generation | Gen5 | Gen5 | Gen5 | Gen5 | Gen5 |
| Min-max vCores | 0.5-1 | 0.5-2 | 0.5-4 | 0.75-6 | 1.0-8 |
| Min-max memory (GB) | 2.02-3 | 2.05-6 | 2.10-12 | 2.25-18 | 3.00-24 |
| Min auto-pause delay (minutes) | 60 | 60 | 60 | 60 | 60 |
| Columnstore support | Yes | Yes | Yes | Yes | Yes |
| In-memory OLTP storage (GB) | N/A | N/A | N/A | N/A | N/A |
| Max data size (GB) | 512 | 1024 | 1024 | 1024 | 1536 |
| Max log size (GB) | 154 | 307 | 307 | 307 | 461 |
| TempDB max data size (GB) | 32 | 64 | 128 | 192 | 256 |
| Storage type | Remote SSD | Remote SSD | Remote SSD | Remote SSD | Remote SSD |
| IO latency (approximate) | 5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
| Max data IOPS * | 320 | 640 | 1280 | 1920 | 2560 |
| Max log rate (MBps) | 3.8 | 7.5 | 15 | 22.5 | 30 |
| Max concurrent workers (requests) | 75 | 150 | 300 | 450 | 600 |
| Max concurrent sessions | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 |
| Number of replicas | 1 | 1 | 1 | 1 | 1 |
| Multi-AZ | N/A | N/A | N/A | N/A | N/A |
| Read Scale-out | N/A | N/A | N/A | N/A | N/A |
| Included backup storage | 1X DB size | 1X DB size | 1X DB size | 1X DB size | 1X DB size |
* The maximum value for IO sizes ranging between 8 KB and 64 KB. Actual IOPS are workload-dependent. For details, see Data IO Governance.
Gen5 compute generation (part 2)
| Compute size | GP_S_Gen5_10 | GP_S_Gen5_12 | GP_S_Gen5_14 | GP_S_Gen5_16 |
|---|---|---|---|---|
| Compute generation | Gen5 | Gen5 | Gen5 | Gen5 |
| Min-max vCores | 1.25-10 | 1.50-12 | 1.75-14 | 2.00-16 |
| Min-max memory (GB) | 3.75-30 | 4.50-36 | 5.25-42 | 6.00-48 |
| Min auto-pause delay (minutes) | 60 | 60 | 60 | 60 |
| Columnstore support | Yes | Yes | Yes | Yes |
| In-memory OLTP storage (GB) | N/A | N/A | N/A | N/A |
| Max data size (GB) | 1536 | 3072 | 3072 | 3072 |
| Max log size (GB) | 461 | 461 | 461 | 922 |
| TempDB max data size (GB) | 320 | 384 | 448 | 512 |
| Storage type | Remote SSD | Remote SSD | Remote SSD | Remote SSD |
| IO latency (approximate) | 5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
| Max data IOPS * | 3200 | 3840 | 4480 | 5120 |
| Max log rate (MBps) | 30 | 30 | 30 | 30 |
| Max concurrent workers (requests) | 750 | 900 | 1050 | 1200 |
| Max concurrent sessions | 30,000 | 30,000 | 30,000 | 30,000 |
| Number of replicas | 1 | 1 | 1 | 1 |
| Multi-AZ | N/A | N/A | N/A | N/A |
| Read Scale-out | N/A | N/A | N/A | N/A |
| Included backup storage | 1X DB size | 1X DB size | 1X DB size | 1X DB size |
* The maximum value for IO sizes ranging between 8 KB and 64 KB. Actual IOPS are workload-dependent. For details, see Data IO Governance.
Hyperscale - provisioned compute - Gen4
Gen4 compute generation (part 1)
| Performance level | HS_Gen4_1 | HS_Gen4_2 | HS_Gen4_3 | HS_Gen4_4 | HS_Gen4_5 | HS_Gen4_6 |
|---|---|---|---|---|---|---|
| Compute generation | Gen4 | Gen4 | Gen4 | Gen4 | Gen4 | Gen4 |
| vCores | 1 | 2 | 3 | 4 | 5 | 6 |
| Memory (GB) | 7 | 14 | 21 | 28 | 35 | 42 |
| RBPEX Size | 3X Memory | 3X Memory | 3X Memory | 3X Memory | 3X Memory | 3X Memory |
| Columnstore support | Yes | Yes | Yes | Yes | Yes | Yes |
| In-memory OLTP storage (GB) | N/A | N/A | N/A | N/A | N/A | N/A |
| Max data size (TB) | 100 | 100 | 100 | 100 | 100 | 100 |
| Max log size (TB) | 1 | 1 | 1 | 1 | 1 | 1 |
| TempDB max data size (GB) | 32 | 64 | 96 | 128 | 160 | 192 |
| Storage type | Note 1 | Note 1 | Note 1 | Note 1 | Note 1 | Note 1 |
| Max data IOPS * | Note 2 | Note 2 | Note 2 | Note 2 | Note 2 | Note 2 |
| IO latency (approximate) | Note 3 | Note 3 | Note 3 | Note 3 | Note 3 | Note 3 |
| Max concurrent workers (requests) | 200 | 400 | 600 | 800 | 1000 | 1200 |
| Max concurrent sessions | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 |
| Secondary replicas | 0-4 | 0-4 | 0-4 | 0-4 | 0-4 | 0-4 |
| Multi-AZ | N/A | N/A | N/A | N/A | N/A | N/A |
| Read Scale-out | Yes | Yes | Yes | Yes | Yes | Yes |
| Backup storage retention | 7 days | 7 days | 7 days | 7 days | 7 days | 7 days |
Gen4 compute generation (part 2)
| Performance level | HS_Gen4_7 | HS_Gen4_8 | HS_Gen4_9 | HS_Gen4_10 | HS_Gen4_16 | HS_Gen4_24 |
|---|---|---|---|---|---|---|
| Compute generation | Gen4 | Gen4 | Gen4 | Gen4 | Gen4 | Gen4 |
| vCores | 7 | 8 | 9 | 10 | 16 | 24 |
| Memory (GB) | 49 | 56 | 63 | 70 | 112 | 159.5 |
| RBPEX Size | 3X Memory | 3X Memory | 3X Memory | 3X Memory | 3X Memory | 3X Memory |
| Columnstore support | Yes | Yes | Yes | Yes | Yes | Yes |
| In-memory OLTP storage (GB) | N/A | N/A | N/A | N/A | N/A | N/A |
| Max data size (TB) | 100 | 100 | 100 | 100 | 100 | 100 |
| Max log size (TB) | 1 | 1 | 1 | 1 | 1 | 1 |
| TempDB max data size (GB) | 224 | 256 | 288 | 320 | 512 | 768 |
| Storage type | Note 1 | Note 1 | Note 1 | Note 1 | Note 1 | Note 1 |
| Max data IOPS * | Note 2 | Note 2 | Note 2 | Note 2 | Note 2 | Note 2 |
| IO latency (approximate) | Note 3 | Note 3 | Note 3 | Note 3 | Note 3 | Note 3 |
| Max concurrent workers (requests) | 1400 | 1600 | 1800 | 2000 | 3200 | 4800 |
| Max concurrent sessions | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 |
| Secondary replicas | 0-4 | 0-4 | 0-4 | 0-4 | 0-4 | 0-4 |
| Multi-AZ | N/A | N/A | N/A | N/A | N/A | N/A |
| Read Scale-out | Yes | Yes | Yes | Yes | Yes | Yes |
| Backup storage retention | 7 days | 7 days | 7 days | 7 days | 7 days | 7 days |
* The maximum value for IO sizes ranging between 8 KB and 64 KB. Actual IOPS are workload-dependent. For details, see Data IO Governance.
Hyperscale - provisioned compute - Gen5
Gen5 compute generation (part 1)
| Performance level | HS_Gen5_2 | HS_Gen5_4 | HS_Gen5_6 | HS_Gen_8 | HS_Gen5_10 | HS_Gen5_12 | HS_Gen5_14 |
|---|---|---|---|---|---|---|---|
| Compute generation | Gen5 | Gen5 | Gen5 | Gen5 | Gen5 | Gen5 | Gen5 |
| vCores | 2 | 4 | 6 | 8 | 10 | 12 | 14 |
| Memory (GB) | 10.4 | 20.8 | 31.1 | 41.5 | 51.9 | 62.3 | 72.7 |
| RBPEX Size | 3X Memory | 3X Memory | 3X Memory | 3X Memory | 3X Memory | 3X Memory | 3X Memory |
| Columnstore support | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| In-memory OLTP storage (GB) | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| Max data size (TB) | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Max log size (TB) | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| TempDB max data size (GB) | 64 | 128 | 192 | 256 | 320 | 384 | 448 |
| Storage type | Note 1 | Note 1 | Note 1 | Note 1 | Note 1 | Note 1 | Note 1 |
| Max data IOPS * | Note 2 | Note 2 | Note 2 | Note 2 | Note 2 | Note 2 | Note 2 |
| IO latency (approximate) | Note 3 | Note 3 | Note 3 | Note 3 | Note 3 | Note 3 | Note 3 |
| Max concurrent workers (requests) | 200 | 400 | 600 | 800 | 1000 | 1200 | 1400 |
| Max concurrent sessions | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 |
| Secondary replicas | 0-4 | 0-4 | 0-4 | 0-4 | 0-4 | 0-4 | 0-4 |
| Multi-AZ | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| Read Scale-out | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Backup storage retention | 7 days | 7 days | 7 days | 7 days | 7 days | 7 days | 7 days |
* The maximum value for IO sizes ranging between 8 KB and 64 KB. Actual IOPS are workload-dependent. For details, see Data IO Governance.
Gen5 compute generation (part 2)
| Performance level | HS_Gen5_16 | HS_Gen5_18 | HS_Gen5_20 | HS_Gen_24 | HS_Gen5_32 | HS_Gen5_40 | HS_Gen5_80 |
|---|---|---|---|---|---|---|---|
| Compute generation | Gen5 | Gen5 | Gen5 | Gen5 | Gen5 | Gen5 | Gen5 |
| vCores | 16 | 18 | 20 | 24 | 32 | 40 | 80 |
| Memory (GB) | 83 | 93.4 | 103.8 | 124.6 | 166.1 | 207.6 | 415.2 |
| RBPEX Size | 3X Memory | 3X Memory | 3X Memory | 3X Memory | 3X Memory | 3X Memory | 3X Memory |
| Columnstore support | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| In-memory OLTP storage (GB) | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| Max data size (TB) | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Max log size (TB) | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| TempDB max data size (GB) | 512 | 576 | 640 | 768 | 1024 | 1280 | 2560 |
| Storage type | Note 1 | Note 1 | Note 1 | Note 1 | Note 1 | Note 1 | Note 1 |
| Max data IOPS * | Note 2 | Note 2 | Note 2 | Note 2 | Note 2 | Note 2 | Note 2 |
| IO latency (approximate) | Note 3 | Note 3 | Note 3 | Note 3 | Note 3 | Note 3 | Note 3 |
| Max concurrent workers (requests) | 200 | 400 | 800 | 1600 | 2400 | 3200 | 8000 |
| Max concurrent sessions | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 |
| Secondary replicas | 0-4 | 0-4 | 0-4 | 0-4 | 0-4 | 0-4 | 0-4 |
| Multi-AZ | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| Read Scale-out | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Backup storage retention | 7 days | 7 days | 7 days | 7 days | 7 days | 7 days | 7 days |
* The maximum value for IO sizes ranging between 8 KB and 64 KB. Actual IOPS are workload-dependent. For details, see Data IO Governance.
Notes
Note 1: Hyperscale is a multi-tiered architecture with separate compute and storage components: Hyperscale Service Tier Architecture
Note 2: Hyperscale multi-tiered architecture has caching at multiple levels. Effective IOPS will depend on the workload.
Note 3: Latency is 1-2 ms for data in the RBPEX SSD-based cache on compute replicas, which caches most used data pages. Higher latency for data retrieved from page servers.
General purpose - provisioned compute - Gen4
Important
New Gen4 databases are no longer supported in the Australia East or Brazil South regions.
Gen4 compute generation (part 1)
| Compute size | GP_Gen4_1 | GP_Gen4_2 | GP_Gen4_3 | GP_Gen4_4 | GP_Gen4_5 | GP_Gen4_6 |
|---|---|---|---|---|---|---|
| Compute generation | Gen4 | Gen4 | Gen4 | Gen4 | Gen4 | Gen4 |
| vCores | 1 | 2 | 3 | 4 | 5 | 6 |
| Memory (GB) | 7 | 14 | 21 | 28 | 35 | 42 |
| Columnstore support | Yes | Yes | Yes | Yes | Yes | Yes |
| In-memory OLTP storage (GB) | N/A | N/A | N/A | N/A | N/A | N/A |
| Max data size (GB) | 1024 | 1024 | 1536 | 1536 | 1536 | 3072 |
| Max log size (GB) | 307 | 307 | 461 | 461 | 461 | 922 |
| TempDB max data size (GB) | 32 | 64 | 96 | 128 | 160 | 192 |
| Storage type | Remote SSD | Remote SSD | Remote SSD | Remote SSD | Remote SSD | Remote SSD |
| IO latency (approximate) | 5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
| Max data IOPS * | 320 | 640 | 960 | 1280 | 1600 | 1920 |
| Max log rate (MBps) | 3.75 | 7.5 | 11.25 | 15 | 18.75 | 22.5 |
| Max concurrent workers (requests) | 200 | 400 | 600 | 800 | 1000 | 1200 |
| Max concurrent sessions | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 |
| Number of replicas | 1 | 1 | 1 | 1 | 1 | 1 |
| Multi-AZ | N/A | N/A | N/A | N/A | N/A | N/A |
| Read Scale-out | N/A | N/A | N/A | N/A | N/A | N/A |
| Included backup storage | 1X DB size | 1X DB size | 1X DB size | 1X DB size | 1X DB size | 1X DB size |
* The maximum value for IO sizes ranging between 8 KB and 64 KB. Actual IOPS are workload-dependent. For details, see Data IO Governance.
Gen4 compute generation (part 2)
| Compute size | GP_Gen4_7 | GP_Gen4_8 | GP_Gen4_9 | GP_Gen4_10 | GP_Gen4_16 | GP_Gen4_24 |
|---|---|---|---|---|---|---|
| Compute generation | Gen4 | Gen4 | Gen4 | Gen4 | Gen4 | Gen4 |
| vCores | 7 | 8 | 9 | 10 | 16 | 24 |
| Memory (GB) | 49 | 56 | 63 | 70 | 112 | 159.5 |
| Columnstore support | Yes | Yes | Yes | Yes | Yes | Yes |
| In-memory OLTP storage (GB) | N/A | N/A | N/A | N/A | N/A | N/A |
| Max data size (GB) | 3072 | 3072 | 3072 | 3072 | 4096 | 4096 |
| Max log size (GB) | 922 | 922 | 922 | 922 | 1229 | 1229 |
| TempDB max data size (GB) | 224 | 256 | 288 | 320 | 512 | 768 |
| Storage type | Remote SSD | Remote SSD | Remote SSD | Remote SSD | Remote SSD | Remote SSD |
| IO latency (approximate) | 5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
| Max data IOPS * | 2240 | 2560 | 2880 | 3200 | 5120 | 7680 |
| Max log rate (MBps) | 26.3 | 30 | 30 | 30 | 30 | 30 |
| Max concurrent workers (requests) | 1400 | 1600 | 1800 | 2000 | 3200 | 4800 |
| Max concurrent sessions | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 |
| Number of replicas | 1 | 1 | 1 | 1 | 1 | 1 |
| Multi-AZ | N/A | N/A | N/A | N/A | N/A | N/A |
| Read Scale-out | N/A | N/A | N/A | N/A | N/A | N/A |
| Included backup storage | 1X DB size | 1X DB size | 1X DB size | 1X DB size | 1X DB size | 1X DB size |
* The maximum value for IO sizes ranging between 8 KB and 64 KB. Actual IOPS are workload-dependent. For details, see Data IO Governance.
General purpose - provisioned compute - Gen5
Gen5 compute generation (part 1)
| Compute size | GP_Gen5_2 | GP_Gen5_4 | GP_Gen5_6 | GP_Gen5_8 | GP_Gen5_10 | GP_Gen5_12 | GP_Gen5_14 |
|---|---|---|---|---|---|---|---|
| Compute generation | Gen5 | Gen5 | Gen5 | Gen5 | Gen5 | Gen5 | Gen5 |
| vCores | 2 | 4 | 6 | 8 | 10 | 12 | 14 |
| Memory (GB) | 10.4 | 20.8 | 31.1 | 41.5 | 51.9 | 62.3 | 72.7 |
| Columnstore support | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| In-memory OLTP storage (GB) | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| Max data size (GB) | 1024 | 1024 | 1536 | 1536 | 1536 | 3072 | 3072 |
| Max log size (GB) | 307 | 307 | 461 | 461 | 461 | 922 | 922 |
| TempDB max data size (GB) | 64 | 128 | 192 | 256 | 320 | 384 | 384 |
| Storage type | Remote SSD | Remote SSD | Remote SSD | Remote SSD | Remote SSD | Remote SSD | Remote SSD |
| IO latency (approximate) | 5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
| Max data IOPS * | 640 | 1280 | 1920 | 2560 | 3200 | 3840 | 4480 |
| Max log rate (MBps) | 7.5 | 15 | 22.5 | 30 | 30 | 30 | 30 |
| Max concurrent workers (requests) | 200 | 400 | 600 | 800 | 1000 | 1200 | 1400 |
| Max concurrent sessions | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 |
| Number of replicas | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Multi-AZ | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| Read Scale-out | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| Included backup storage | 1X DB size | 1X DB size | 1X DB size | 1X DB size | 1X DB size | 1X DB size | 1X DB size |
* The maximum value for IO sizes ranging between 8 KB and 64 KB. Actual IOPS are workload-dependent. For details, see Data IO Governance.
Gen5 compute generation (part 2)
| Compute size | GP_Gen5_16 | GP_Gen5_18 | GP_Gen5_20 | GP_Gen5_24 | GP_Gen5_32 | GP_Gen5_40 | GP_Gen5_80 |
|---|---|---|---|---|---|---|---|
| Compute generation | Gen5 | Gen5 | Gen5 | Gen5 | Gen5 | Gen5 | Gen5 |
| vCores | 16 | 18 | 20 | 24 | 32 | 40 | 80 |
| Memory (GB) | 83 | 93.4 | 103.8 | 124.6 | 166.1 | 207.6 | 415.2 |
| Columnstore support | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| In-memory OLTP storage (GB) | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| Max data size (GB) | 3072 | 3072 | 3072 | 4096 | 4096 | 4096 | 4096 |
| Max log size (GB) | 922 | 922 | 922 | 1229 | 1229 | 1229 | 1229 |
| TempDB max data size (GB) | 512 | 576 | 640 | 768 | 1024 | 1280 | 2560 |
| Storage type | Remote SSD | Remote SSD | Remote SSD | Remote SSD | Remote SSD | Remote SSD | Remote SSD |
| IO latency (approximate) | 5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
5-7 ms (write) 5-10 ms (read) |
| Max data IOPS * | 5120 | 5760 | 6400 | 7680 | 10240 | 12800 | 25600 |
| Max log rate (MBps) | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
| Max concurrent workers (requests) | 1600 | 1800 | 2000 | 2400 | 3200 | 4000 | 8000 |
| Max concurrent sessions | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 |
| Number of replicas | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Multi-AZ | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| Read Scale-out | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| Included backup storage | 1X DB size | 1X DB size | 1X DB size | 1X DB size | 1X DB size | 1X DB size | 1X DB size |
* The maximum value for IO sizes ranging between 8 KB and 64 KB. Actual IOPS are workload-dependent. For details, see Data IO Governance.
General purpose - provisioned compute - Fsv2-series
Fsv2-series compute generation (preview)
| Compute size | GP_Fsv2_72 |
|---|---|
| Compute generation | Fsv2-series |
| vCores | 72 |
| Memory (GB) | 136.2 |
| Columnstore support | Yes |
| In-memory OLTP storage (GB) | N/A |
| Max data size (GB) | 4096 |
| Max log size (GB) | 1024 |
| TempDB max data size (GB) | 333 |
| Storage type | Remote SSD |
| IO latency (approximate) | 5-7 ms (write) 5-10 ms (read) |
| Max data IOPS * | 23,040 |
| Max log rate (MBps) | 30 |
| Max concurrent workers (requests) | 3600 |
| Max concurrent sessions | 30,000 |
| Number of replicas | 1 |
| Multi-AZ | N/A |
| Read Scale-out | N/A |
| Included backup storage | 1X DB size |
* The maximum value for IO sizes ranging between 8 KB and 64 KB. Actual IOPS are workload-dependent. For details, see Data IO Governance.
Business critical - provisioned compute - Gen4
Important
New Gen4 databases are no longer supported in the Australia East or Brazil South regions.
Gen4 compute generation (part 1)
| Compute size | BC_Gen4_1 | BC_Gen4_2 | BC_Gen4_3 | BC_Gen4_4 | BC_Gen4_5 | BC_Gen4_6 |
|---|---|---|---|---|---|---|
| Compute generation | Gen4 | Gen4 | Gen4 | Gen4 | Gen4 | Gen4 |
| vCores | 1 | 2 | 3 | 4 | 5 | 6 |
| Memory (GB) | 7 | 14 | 21 | 28 | 35 | 42 |
| Columnstore support | Yes | Yes | Yes | Yes | Yes | Yes |
| In-memory OLTP storage (GB) | 1 | 2 | 3 | 4 | 5 | 6 |
| Storage type | Local SSD | Local SSD | Local SSD | Local SSD | Local SSD | Local SSD |
| Max data size (GB) | 1024 | 1024 | 1024 | 1024 | 1024 | 1024 |
| Max log size (GB) | 307 | 307 | 307 | 307 | 307 | 307 |
| TempDB max data size (GB) | 32 | 64 | 96 | 128 | 160 | 192 |
| IO latency (approximate) | 1-2 ms (write) 1-2 ms (read) |
1-2 ms (write) 1-2 ms (read) |
1-2 ms (write) 1-2 ms (read) |
1-2 ms (write) 1-2 ms (read) |
1-2 ms (write) 1-2 ms (read) |
1-2 ms (write) 1-2 ms (read) |
| Max data IOPS * | 4,000 | 8,000 | 12,000 | 16,000 | 20,000 | 24,000 |
| Max log rate (MBps) | 8 | 16 | 24 | 32 | 40 | 48 |
| Max concurrent workers (requests) | 200 | 400 | 600 | 800 | 1000 | 1200 |
| Max concurrent logins | 200 | 400 | 600 | 800 | 1000 | 1200 |
| Max concurrent sessions | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 |
| Number of replicas | 4 | 4 | 4 | 4 | 4 | 4 |
| Multi-AZ | Yes | Yes | Yes | Yes | Yes | Yes |
| Read Scale-out | Yes | Yes | Yes | Yes | Yes | Yes |
| Included backup storage | 1X DB size | 1X DB size | 1X DB size | 1X DB size | 1X DB size | 1X DB size |
* The maximum value for IO sizes ranging between 8 KB and 64 KB. Actual IOPS are workload-dependent. For details, see Data IO Governance.
Gen4 compute generation (part 2)
| Compute size | BC_Gen4_7 | BC_Gen4_8 | BC_Gen4_9 | BC_Gen4_10 | BC_Gen4_16 | BC_Gen4_24 |
|---|---|---|---|---|---|---|
| Compute generation | Gen4 | Gen4 | Gen4 | Gen4 | Gen4 | Gen4 |
| vCores | 7 | 8 | 9 | 10 | 16 | 24 |
| Memory (GB) | 49 | 56 | 63 | 70 | 112 | 159.5 |
| Columnstore support | Yes | Yes | Yes | Yes | Yes | Yes |
| In-memory OLTP storage (GB) | 7 | 8 | 9.5 | 11 | 20 | 36 |
| Storage type | Local SSD | Local SSD | Local SSD | Local SSD | Local SSD | Local SSD |
| Max data size (GB) | 1024 | 1024 | 1024 | 1024 | 1024 | 1024 |
| Max log size (GB) | 307 | 307 | 307 | 307 | 307 | 307 |
| TempDB max data size (GB) | 224 | 256 | 288 | 320 | 512 | 768 |
| IO latency (approximate) | 1-2 ms (write) 1-2 ms (read) |
1-2 ms (write) 1-2 ms (read) |
1-2 ms (write) 1-2 ms (read) |
1-2 ms (write) 1-2 ms (read) |
1-2 ms (write) 1-2 ms (read) |
1-2 ms (write) 1-2 ms (read) |
| Max data IOPS | 28,000 | 32,000 | 36,000 | 40,000 | 64,000 | 76,800 |
| Max log rate (MBps) | 56 | 64 | 64 | 64 | 64 | 64 |
| Max concurrent workers (requests) | 1400 | 1600 | 1800 | 2000 | 3200 | 4800 |
| Max concurrent logins (requests) | 1400 | 1600 | 1800 | 2000 | 3200 | 4800 |
| Max concurrent sessions | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 |
| Number of replicas | 4 | 4 | 4 | 4 | 4 | 4 |
| Multi-AZ | Yes | Yes | Yes | Yes | Yes | Yes |
| Read Scale-out | Yes | Yes | Yes | Yes | Yes | Yes |
| Included backup storage | 1X DB size | 1X DB size | 1X DB size | 1X DB size | 1X DB size | 1X DB size |
* The maximum value for IO sizes ranging between 8 KB and 64 KB. Actual IOPS are workload-dependent. For details, see Data IO Governance.
Business critical - provisioned compute - Gen5
Gen5 compute generation (part 1)
| Compute size | BC_Gen5_2 | BC_Gen5_4 | BC_Gen5_6 | BC_Gen5_8 | BC_Gen5_10 | BC_Gen5_12 | BC_Gen5_14 |
|---|---|---|---|---|---|---|---|
| Compute generation | Gen5 | Gen5 | Gen5 | Gen5 | Gen5 | Gen5 | Gen5 |
| vCores | 2 | 4 | 6 | 8 | 10 | 12 | 14 |
| Memory (GB) | 10.4 | 20.8 | 31.1 | 41.5 | 51.9 | 62.3 | 72.7 |
| Columnstore support | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| In-memory OLTP storage (GB) | 1.57 | 3.14 | 4.71 | 6.28 | 8.65 | 11.02 | 13.39 |
| Max data size (GB) | 1024 | 1024 | 1536 | 1536 | 1536 | 3072 | 3072 |
| Max log size (GB) | 307 | 307 | 461 | 461 | 461 | 922 | 922 |
| TempDB max data size (GB) | 64 | 128 | 192 | 256 | 320 | 384 | 448 |
| Storage type | Local SSD | Local SSD | Local SSD | Local SSD | Local SSD | Local SSD | Local SSD |
| IO latency (approximate) | 1-2 ms (write) 1-2 ms (read) |
1-2 ms (write) 1-2 ms (read) |
1-2 ms (write) 1-2 ms (read) |
1-2 ms (write) 1-2 ms (read) |
1-2 ms (write) 1-2 ms (read) |
1-2 ms (write) 1-2 ms (read) |
1-2 ms (write) 1-2 ms (read) |
| Max data IOPS * | 8000 | 16,000 | 24,000 | 32,000 | 40,000 | 48,000 | 56,000 |
| Max log rate (MBps) | 24 | 48 | 72 | 96 | 96 | 96 | 96 |
| Max concurrent workers (requests) | 200 | 400 | 600 | 800 | 1000 | 1200 | 1400 |
| Max concurrent logins | 200 | 400 | 600 | 800 | 1000 | 1200 | 1400 |
| Max concurrent sessions | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 |
| Number of replicas | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Multi-AZ | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Read Scale-out | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Included backup storage | 1X DB size | 1X DB size | 1X DB size | 1X DB size | 1X DB size | 1X DB size | 1X DB size |
* The maximum value for IO sizes ranging between 8 KB and 64 KB. Actual IOPS are workload-dependent. For details, see Data IO Governance.
Gen5 compute generation (part 2)
| Compute size | BC_Gen5_16 | BC_Gen5_18 | BC_Gen5_20 | BC_Gen5_24 | BC_Gen5_32 | BC_Gen5_40 | BC_Gen5_80 |
|---|---|---|---|---|---|---|---|
| Compute generation | Gen5 | Gen5 | Gen5 | Gen5 | Gen5 | Gen5 | Gen5 |
| vCores | 16 | 18 | 20 | 24 | 32 | 40 | 80 |
| Memory (GB) | 83 | 93.4 | 103.8 | 124.6 | 166.1 | 207.6 | 415.2 |
| Columnstore support | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| In-memory OLTP storage (GB) | 15.77 | 18.14 | 20.51 | 25.25 | 37.94 | 52.23 | 131.64 |
| Max data size (GB) | 3072 | 3072 | 3072 | 4096 | 4096 | 4096 | 4096 |
| Max log size (GB) | 922 | 922 | 922 | 1229 | 1229 | 1229 | 1229 |
| TempDB max data size (GB) | 512 | 576 | 640 | 768 | 1024 | 1280 | 2560 |
| Storage type | Local SSD | Local SSD | Local SSD | Local SSD | Local SSD | Local SSD | Local SSD |
| IO latency (approximate) | 1-2 ms (write) 1-2 ms (read) |
1-2 ms (write) 1-2 ms (read) |
1-2 ms (write) 1-2 ms (read) |
1-2 ms (write) 1-2 ms (read) |
1-2 ms (write) 1-2 ms (read) |
1-2 ms (write) 1-2 ms (read) |
1-2 ms (write) 1-2 ms (read) |
| Max data IOPS * | 64,000 | 72,000 | 80,000 | 96,000 | 128,000 | 160,000 | 204,800 |
| Max log rate (MBps) | 96 | 96 | 96 | 96 | 96 | 96 | 96 |
| Max concurrent workers (requests) | 1600 | 1800 | 2000 | 2400 | 3200 | 4000 | 8000 |
| Max concurrent logins | 1600 | 1800 | 2000 | 2400 | 3200 | 4000 | 8000 |
| Max concurrent sessions | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 | 30,000 |
| Number of replicas | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Multi-AZ | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Read Scale-out | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Included backup storage | 1X DB size | 1X DB size | 1X DB size | 1X DB size | 1X DB size | 1X DB size | 1X DB size |
* The maximum value for IO sizes ranging between 8 KB and 64 KB. Actual IOPS are workload-dependent. For details, see Data IO Governance.
Business critical - provisioned compute - M-series
M-series compute generation (preview)
| Compute size | GP_M_128 |
|---|---|
| Compute generation | M-series |
| vCores | 128 |
| Memory (GB) | 3767 |
| Columnstore support | Yes |
| In-memory OLTP storage (GB) | 481 |
| Max data size (GB) | 4096 |
| Max log size (GB) | 2048 |
| TempDB max data size (GB) | 4096 |
| Storage type | Local SSD |
| IO latency (approximate) | 1-2 ms (write) 1-2 ms (read) |
| Max data IOPS * | 204,800 |
| Max log rate (MBps) | 192 |
| Max concurrent workers (requests) | 12800 |
| Max concurrent sessions | 30000 |
| Number of replicas | 4 |
| Multi-AZ | Yes |
| Read Scale-out | Yes |
| Included backup storage | 1X DB size |
* The maximum value for IO sizes ranging between 8 KB and 64 KB. Actual IOPS are workload-dependent. For details, see Data IO Governance.
Important
Under some circumstances, you may need to shrink a database to reclaim unused space. For more information, see Manage file space in Azure SQL Database.
Next steps
- For DTU resource limits for a single database, see resource limits for single databases using the DTU purchasing model
- For vCore resource limits for elastic pools, see resource limits for elastic pools using the vCore purchasing model
- For DTU resource limits for elastic pools, see resource limits for elastic pools using the DTU purchasing model
- For resource limits for managed instances, see managed instance resource limits.
- For information about general Azure limits, see Azure subscription and service limits, quotas, and constraints.
- For information about resource limits on a database server, see overview of resource limits on a SQL Database server for information about limits at the server and subscription levels.
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