Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
This article describes reliability support in Azure Notification Hubs and covers regional resiliency with availability zones.
Availability zone support
Availability zones are physically separate groups of datacenters within an Azure region. When one zone fails, services can fail over to one of the remaining zones.
In a region that supports availability zones, Notification Hubs supports a zone-redundant deployment by default. When you deploy with availability zones, both registration data and metadata are replicated across all zones in the specified region.
Prerequisites
Azure Notification Hubs uses availability zones in regions where they're available. For a list of regions that support availability zones, see Azure regions with availability zones.
Availability zones are supported by default only in specific tiers. To learn which tiers support availability zone deployments, see Notification Hubs pricing.
SLA improvements
Availability zones support incurs an additional cost on top of existing tier pricing. For more information about our SLA, see the Notification Hubs SLA.
Zone down experience
During a zone-wide outage, no action is required during zone recovery. Notification Hubs self-heals and re-balances itself to automatically take advantage of the healthy zone.
Enable availability zones
You can only enable availability zones on new namespaces. Because Notification Hubs doesn't support the migration of existing namespaces, you can't disable zone redundancy after enabling it on your namespace.
To learn how to set up a new namespace with availability zones, see Create an Azure notification hub in the Azure portal.
Migrate to availability zone support
To learn how to move an existing Notification Hubs resource to a new region with availability zone support, follow the guidance in Move resources between Azure regions.