Deploying Load Balancer to multizone regions
A Multizone region (MZR) helps your load balancer appliances achieve high availability and redundancy. When provisioning a load balancer, you must specify the subnet where you want it created. If that data center is part of an MZR, one appliance is deployed in the selected data center while a second is deployed in a different data center within the same region.
For example, us-south is an MZR, which contains the data centers dal10, dal12, dal13. You have a subnet A in dal10, subnets B and C in dal12 and subnets D and E in dal13.
If you create a load balancer in a data center dal13, the first appliance gets deployed in dal13 while the second gets deployed in the subnet with the most available IPs between dal10 or dal12 data centers.
Currently, the following data centers are part of MZR:
| MZR Name | Data Centers |
|---|---|
| au-syd | syd01, syd04, syd05 |
| br-sao | sao01, sao04, sao05 |
| ca-tor | tor01, tor04, tor05 |
| eu-de | fra02, fra04, fra05 |
| eu-es | mad02, mad04, mad05 |
| eu-gb | lon04, lon05, lon06 |
| jp-osa | osa21, osa22, osa23 |
| jp-tok | tok02, tok04, tok05 |
| us-east | wdc04, wdc06, wdc07 |
| us-south | dal10, dal12, dal13 |
MZR requirements
MZRs have the following requirements:
- The data center that you select should be part of an MZR. The preceding table lists the regions and the data centers in each region.
- VLAN spanning or VRF must be enabled in your account.
- Private subnets must exist in your account in the data centers of the MZR. Creation of compute devices in data centers results in the instantiation of private subnets.
If the data center you select is not part of an MZR, or if VLAN spanning or VRF is not enabled in your account, the load balancer creation defaults to the original behavior of instantiating all load balancer nodes in the data center you specify.
For a detailed overview and list of data centers that are part of the MZR, see IBM Cloud region and data center locations for resource deployment.