# PostgreSQL HA Cluster

Source: https://calc.onpremeasy.com/product/postgresql-ha/

## Indicative from-price range

Indicative from-price range for self-hosting PostgreSQL HA Cluster on 2 servers: about $48 to $224 per month (USD), as of 2026-10-19, for the reference workload (Writable primary nodes: 1; Replica nodes: 2; Logical dataset size (GB): 500). From-price by provider, each the cheapest server in that provider's own shortlist: $48 on DigitalOcean (basic-2vcpu-4gb, 2 vCPU, 4 GB RAM, fra1); $128 on OVHcloud (rise-1, 6 vCPU, 32 GB RAM, eu-west); $132 on Hetzner (AX41, 6 vCPU, 64 GB RAM, eu-central); $276 on Amazon Web Services (i7i.large, 2 vCPU, 16 GB RAM, us-east-1); $352 on Google Cloud (c4a-standard-4-lssd, 4 vCPU, 16 GB RAM, us-central1); $852 on Servers.com (el-01, 16 vCPU, 192 GB RAM, eu-west); $1,016 on Microsoft Azure (L8s_v4, 8 vCPU, 64 GB RAM, eastus).

Reference workload:
- Writable primary nodes: 1
- Replica nodes: 2
- Logical dataset size (GB): 500

Price snapshot: 2026-10-19. Currency: USD. FX snapshot: 2026-10-19.

Configuration: Low end: 2 x basic-2vcpu-4gb (DigitalOcean, 2 vCPU, 4 GB RAM, about $24 per server per month). High end: 2 x rise-m (OVHcloud, 12 vCPU, 64 GB RAM, about $112 per server per month).

Methodology: This range is generated automatically from public provider price lists. It has not been reviewed by a person, it is not a quote, and it may differ from the total the calculator chooses for your own workload with its AI step. Method: the calculator's offer shortlist for the reference workload (the same ranking it builds before the AI step, up to 12 offers across providers; 12 here) is priced at its monthly list price in USD. The low end is the cheapest of the per-provider from-prices below and the high end is the median server of the combined shortlist, each multiplied by 2, the smallest baseline topology (primary-plus-replicas). The from-price for each provider applies the same method to that provider's own shortlist (the calculator's ranking restricted to that provider), so it is the cheapest server that ranking offers there, not a recommendation. Prices are taken from the price snapshot dated 2026-10-19; prices quoted in EUR are converted with the ECB reference rate dated 2026-10-19. Servers with fewer than 2 vCPU or less than 4 GB RAM are not priced. Only server rental list prices for the product's own servers are counted: dependencies, licences, support, traffic charges, taxes and setup fees are not included.

Price sources:
- [Amazon Web Services](https://pricing.us-east-1.amazonaws.com/offers/v1.0/aws/AmazonEC2/current/us-east-1/index.json)
- [DigitalOcean](https://www.digitalocean.com/pricing/droplets)
- [Google Cloud](https://cloudbilling.googleapis.com/v1/services/6F81-5844-456A/skus)
- [Hetzner](https://www.hetzner.com/_resources/app/data/app/live_data_en_EUR.json)
- [Microsoft Azure](https://prices.azure.com/api/retail/prices)
- [OVHcloud](https://eu.api.ovh.com/1.0/order/catalog/public/eco?ovhSubsidiary=FR)
- [Servers.com](https://www.servers.com/products/scalable-bare-metal)

PostgreSQL is an open-source object-relational database that extends standard SQL with advanced data types, indexing, and transactional integrity; high-availability deployments layer streaming replication and automated failover on top of its core engine.

## Baseline topologies

- primary-plus-replicas: 2 nodes minimum; roles: primary, replica
- primary-plus-two-replicas: 3 nodes minimum; roles: primary, replica

## What drives the cost

- Writable primary nodes: Number of writable primary nodes in the topology. Conservative HA guidance assumes this stays at 1.
- Replica nodes: Number of replica nodes available for failover and read scaling.
- Logical dataset size (GB): Estimated logical dataset size before replication overhead.

## Frequently asked questions

### How much does it cost to self-host PostgreSQL HA Cluster?

Indicative from-price range for self-hosting PostgreSQL HA Cluster on 2 servers: about $48 to $224 per month (USD), as of 2026-10-19, for the reference workload (Writable primary nodes: 1; Replica nodes: 2; Logical dataset size (GB): 500). From-price by provider, each the cheapest server in that provider's own shortlist: $48 on DigitalOcean (basic-2vcpu-4gb, 2 vCPU, 4 GB RAM, fra1); $128 on OVHcloud (rise-1, 6 vCPU, 32 GB RAM, eu-west); $132 on Hetzner (AX41, 6 vCPU, 64 GB RAM, eu-central); $276 on Amazon Web Services (i7i.large, 2 vCPU, 16 GB RAM, us-east-1); $352 on Google Cloud (c4a-standard-4-lssd, 4 vCPU, 16 GB RAM, us-central1); $852 on Servers.com (el-01, 16 vCPU, 192 GB RAM, eu-west); $1,016 on Microsoft Azure (L8s_v4, 8 vCPU, 64 GB RAM, eastus). This is an automatically generated indicative figure from public price lists (price snapshot 2026-10-19), not a quote.

### What drives the cost of self-hosting PostgreSQL HA Cluster?

The sizing inputs the calculator uses for PostgreSQL HA Cluster are: Writable primary nodes; Replica nodes; Logical dataset size (GB). Cost also depends on the number of servers and the provider chosen.

### What is the minimum number of servers for PostgreSQL HA Cluster?

The smallest baseline topology in the calculator's profile for PostgreSQL HA Cluster is primary-plus-replicas (2 servers). Other baseline topologies: primary-plus-two-replicas (3 servers minimum). The reference range above is computed for 2 servers.

Size PostgreSQL HA Cluster for your own workload: https://calc.onpremeasy.com/?product=postgresql-ha

## Sources

- https://www.postgresql.org/
- https://www.postgresql.org/docs/
- https://github.com/postgres/postgres