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Freshen the compute resources page
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‎articles/cosmos-db/postgresql/resources-compute.md

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@@ -7,29 +7,30 @@ ms.service: cosmos-db
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ms.subservice: postgresql
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ms.custom: ignite-2022
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ms.topic: conceptual
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ms.date: 07/08/2022
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ms.date: 01/20/2023
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---
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# Azure Cosmos DB for PostgreSQL compute and storage
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[!INCLUDE [PostgreSQL](../includes/appliesto-postgresql.md)]
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Compute resources are provided as vCores, which represent the logical CPU of
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the underlying hardware. The storage size for provisioning refers to the
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capacity available to the coordinator and worker nodes in your cluster. The
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storage includes database files, temporary files, transaction logs, and the
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Postgres server logs.
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## Multi-node cluster
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You can select the compute and storage settings independently for
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worker nodes and the coordinator node in a cluster.
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Compute resources are provided as vCores, which represent
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the logical CPU of the underlying hardware. The storage size for
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provisioning refers to the capacity available to the coordinator
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and worker nodes in your cluster. The storage
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includes database files, temporary files, transaction logs, and
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the Postgres server logs.
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You can select the compute and storage settings independently for worker nodes
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and the coordinator node in a multi-node cluster.
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| Resource | Worker node | Coordinator node |
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|-----------------------|--------------------------------|--------------------------|
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| Compute, vCores | 4, 8, 16, 32, 64, 96, 104 | 4, 8, 16, 32, 64, 96 |
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| Memory per vCore, GiB | 8 | 4 |
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| Storage size, TiB | 0.5, 1, 2 | 0.5, 1, 2 |
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| Storage type | General purpose (SSD) | General purpose (SSD) |
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| IOPS | Up to 3 IOPS/GiB | Up to 3 IOPS/GiB |
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The total amount of RAM in a single node is based on the
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selected number of vCores.
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| Storage size, TiB | Maximum IOPS |
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|-------------------|--------------|
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| 0.5 | 1,536 |
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| 1 | 3,072 |
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| 2 | 6,148 |
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| 0.5 | 2,300 |
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| 1 | 5,000 |
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| 2 | 7,500 |
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For the entire cluster, the aggregated IOPS work out to the
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following values:
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| Worker nodes | 0.5 TiB, total IOPS | 1 TiB, total IOPS | 2 TiB, total IOPS |
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|--------------|---------------------|-------------------|-------------------|
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| 2 | 3,072 | 6,144 | 12,296 |
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| 3 | 4,608 | 9,216 | 18,444 |
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| 4 | 6,144 | 12,288 | 24,592 |
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| 5 | 7,680 | 15,360 | 30,740 |
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| 6 | 9,216 | 18,432 | 36,888 |
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| 7 | 10,752 | 21,504 | 43,036 |
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| 8 | 12,288 | 24,576 | 49,184 |
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| 9 | 13,824 | 27,648 | 55,332 |
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| 10 | 15,360 | 30,720 | 61,480 |
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| 11 | 16,896 | 33,792 | 67,628 |
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| 12 | 18,432 | 36,864 | 73,776 |
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| 13 | 19,968 | 39,936 | 79,924 |
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| 14 | 21,504 | 43,008 | 86,072 |
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| 15 | 23,040 | 46,080 | 92,220 |
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| 16 | 24,576 | 49,152 | 98,368 |
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| 17 | 26,112 | 52,224 | 104,516 |
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| 18 | 27,648 | 55,296 | 110,664 |
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| 19 | 29,184 | 58,368 | 116,812 |
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| 20 | 30,720 | 61,440 | 122,960 |
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**Next steps**
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| 2 | 4,600 | 10,000 | 15,000 |
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| 3 | 6,900 | 15,000 | 22,500 |
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| 4 | 9,200 | 20,000 | 30,000 |
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| 5 | 11,500 | 25,000 | 37,500 |
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| 6 | 13,800 | 30,000 | 45,000 |
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| 7 | 16,100 | 35,000 | 52,500 |
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| 8 | 18,400 | 40,000 | 60,000 |
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| 9 | 20,700 | 45,000 | 67,500 |
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| 10 | 23,000 | 50,000 | 75,000 |
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| 11 | 25,300 | 55,000 | 82,500 |
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| 12 | 27,600 | 60,000 | 90,000 |
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| 13 | 29,900 | 65,000 | 97,500 |
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| 14 | 32,200 | 70,000 | 105,000 |
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| 15 | 34,500 | 75,000 | 112,500 |
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| 16 | 36,800 | 80,000 | 120,000 |
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| 17 | 39,100 | 85,000 | 127,500 |
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| 18 | 41,400 | 90,000 | 135,000 |
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| 19 | 43,700 | 95,000 | 142,500 |
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| 20 | 46,000 | 100,000 | 150,000 |
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## Single node cluster
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Single-node cluster resource options differ between [burstable
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compute](concepts-burstable-compute.md) and regular compute.
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**Burstable compute**
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| Resource | Resource value |
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|----------|----------------|
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| Burstable compute, vCores | 1, 2 |
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| Burstable compute memory per vCore, GiB | 4 |
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| Storage size, GiB | 128 |
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| Storage IOPS | Up to 500 |
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| Storage type | General purpose (SSD) |
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**Regular compute**
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| Resource | Resource value |
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|----------|----------------|
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| Compute, vCores | 2, 4, 8, 16, 32, 64 |
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| Compute memory per vCore, GiB | 4 |
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| Storage size, GiB (IOPS, up to) | 128 (500), 256 (1,100), 512 (2,300), 1024† (5,000), 2048† (7,500) |
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| Storage type | General purpose (SSD) |
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† 1024 GiB and 2048 GiB are supported with 8 vCores or greater.
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## Next steps
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* Learn how to [create a cluster in the portal](quickstart-create-portal.md)
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* Change [compute quotas](howto-compute-quota.md) for a subscription and region

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