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Expand Up @@ -59,12 +59,16 @@ The tier k6 chooses depends on the number of VUs allocated to a load zone.
- Tier 2 when the load zone has 1000-4001 VUs
- Tier 3 when the load zone has 4001-5000 VUs

Tier 1 instances can host up to 300 VUs
Tier 2 instances can host up to 1200 VUs
Tier 3 instances can host up to 5000 VUs

Regardless of the tier, the amount of resources (CPU, Memory, Network) per VU is the same.
For example, if you start a test with 400VUs, k6 uses 1 Tier 1 server,
meaning that the traffic generated from our service comes from 1 IP.

If you start a test with 1000VUs in a single load zone, k6 uses 1x Tier 2 server.
If the same test is started in 2 load zones, k6 would allocate 500VUs per load zone and use 2x Tier 1 servers.
If the same test is started in 2 load zones, k6 would allocate 500 VUs per load zone and use 4x Tier 1 servers.


## Buy static IPs
Expand Down