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Improve HA FAQ entry #2781

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5 changes: 4 additions & 1 deletion docs/introduction/faq.md
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Expand Up @@ -33,9 +33,12 @@ There are always trade-offs to make when running services, and Prometheus values
### Can Prometheus be made highly available?

Yes, run identical Prometheus servers on two or more separate machines.

Systems like [Thanos](https://thanos.io) can deduplicate the data. Many of the [external systems](/docs/operating/integrations/#remote-endpoints-and-storage) that support [remote write](/docs/prometheus/latest/configuration/configuration/#remote_write) can also deduplicate the data.

Identical alerts will be deduplicated by the [Alertmanager](https://github.com/prometheus/alertmanager).

Alertmanager supports [high availability](https://github.com/prometheus/alertmanager#high-availability) by interconnecting multiple Alertmanager instances to build an Alertmanager cluster. Instances of a cluster communicate using a gossip protocol managed via [HashiCorp's Memberlist](https://github.com/hashicorp/memberlist) library.
Alertmanager supports [high availability](https://github.com/prometheus/alertmanager#high-availability) by interconnecting multiple Alertmanager instances to build an Alertmanager cluster.

### I was told Prometheus “doesn't scale”.

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