When you provision a Cloud Firestore database, you must choose a location for it. To reduce latency and increase availability, store your data close to the users and services that need it.
You can optionally create multiple databases in your project, each with its own location setting.
Be aware that once you provision a database, you cannot change its location setting.
Types of locations
You can store your Cloud Firestore with MongoDB compatibility data in a multi-region location or a regional location .
Multi-region locations
Select a multi-region location to maximize the availability and durability of your database.
A multi-region location consists of a defined set of regions where multiple replicas of the database are stored. Each replica is either a read-write replica which contains all of the data in the database or a witness replica which does not maintain a full set of data but participates in replication.
By replicating the data between multiple regions, data can continue to be served even with the loss of an entire region. Within a region, data is replicated across zones so that data can continue to be served within that region even with the loss of a zone.
Cloud Firestore with MongoDB compatibility supports the following multi-region locations:
| Multi-region name | Multi-region description | Read-Write regions | Witness region | 
|---|---|---|---|
| eur3 | Europe | europe-west1(Belgium),europe-west4(Netherlands) | europe-north1(Finland) | 
| nam5 | United States (Central) | us-central1(Iowa),us-central2(Oklahoma—private Google Cloud 
region) | us-east1(South Carolina) | 
| nam7 | United States (Central and East) | us-central1(Iowa),us-east4(Northern Virginia) | us-central2(Oklahoma—private Google Cloud 
region) | 
Regional locations
A regional location is a specific geographic place, such as South Carolina. Data in a regional location is replicated in multiple zones within a region . All regional locations are separated from other regional locations by at least 100 miles.
Select a regional location for lower costs, for lower write latency if your application is sensitive to latency, or for co-location with other Google Cloud resources .
Cloud Firestore with MongoDB compatibility supports the following regional resource locations:
us-west1 
us-west2 
us-west3 
us-west4 
 us-central1 
northamerica-northeast1 
 northamerica-northeast2 
 northamerica-south1 
us-east1 
us-east4 
 us-east5 
 us-south1 
 southamerica-west1 
southamerica-east1 
europe-west2 
 europe-west1 
 europe-west4 
 europe-west8 
 europe-southwest1 
 europe-west9 
 europe-west12 
 europe-west10 
europe-west3 
 europe-north1 
 europe-north2 
europe-central2 
europe-west6 
 me-central1 
 me-central2 
 me-west1 
asia-south1 
 asia-south2 
asia-southeast1 
asia-southeast2 
asia-east2 
asia-east1 
asia-northeast1 
asia-northeast2 
asia-northeast3 
australia-southeast1 
 australia-southeast2 
 africa-south1 
Location SLA
Your Cloud Firestore with MongoDB compatibility location type determines the Service Level Agreement (SLA) uptime percentage at General Availability (GA):
| Covered service | Monthly uptime percentage | 
|---|---|
| Cloud Firestore with MongoDB compatibility Multi-Region | >= 99.999% | 
| Cloud Firestore with MongoDB compatibility Regional | >= 99.99% | 
Location pricing
Your Cloud Firestore with MongoDB compatibility location determines the cost of database operations.
For a comprehensive explanation of pricing per region and per region type, see Understand Cloud Firestore with MongoDB compatibility billing .
View the location of your databases
Use one of the following methods to view the location setting for your databases:
-  Run the gcloud firestore databases listcommand.
-  Open the database list in the Google Cloud console. The location for each database is in the location column. 
Next steps
-  To create a Cloud Firestore with MongoDB compatibility database in a specific location, see Create and manage databases 
-  For more information about building applications to meet your latency, availability, and durability requirements, refer to Geography and Regions . 

