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We are excited to announce the public preview High Availability (HA) support for Premium SSD v2 in Azure Database for PostgreSQL flexible server delivering faster failovers, better resiliency, and outstanding price-performance for your PostgreSQL workloads. 

With Premium SSD v2, high availability now comes with enhanced resiliency and under 10 seconds failovers, whether deployed in the same zone or across zones. This enables customers to build resilient, high-performance PostgreSQL applications with minimal overhead. It’s especially ideal for workloads demanding higher IOPS and ultra-low latency

High availability is critical for modern applications that demand continuous uptime and zero data loss. By combining Azure’s zone-redundant architecture with the ultra-fast performance of Premium SSD v2, customers can build resilient, low-latency PostgreSQL deployments that scale effortlessly.

Key Features:

• Premium SSD v2 provides flexible disk sizing from 32 GiB to 64 TiB, with 1-GiB granularity.


• Failovers under 10 seconds.


• Sub-millisecond latency, with high IOPS and throughput.


• Up to 80,000 IOPS and 1,200 MBps throughput.


• Performance scaling independent of disk size:  For example, you can achieve 80,000 IOPS with just a 160 GiB disk.


• Baseline performance: Free throughput of 125 MB/s and 3,000 IOPS for disks up to 399 GiB, and 500 MB/s and 12,000 IOPS for disks 400 GiB and above, at no additional cost.

Getting Started

Premium SSD v2 High availability is an opt-in feature that can be enabled at the subscription level using the steps below. As this is a preview feature, it is recommended for use only with non-production workloads for HA validation and testing.

1. In the Search bar, type Preview features and select it from the results.

2. Use the Filter by name field, search for Premium SSD v2 High Availability and select the Subscription on which you want to enable the feature while in preview.

3. Select the feature, and click Register.


4. Wait until the State changes to Registered.

Once you have registered for the high availability preview, you will be able to deploy a new PostgreSQL flexible server using the Premium SSD v2 storage tier with a high availability configuration.

Deploying a New Flexible Server with High Availability using SSDv2

1. In the Azure portal, click Create to start provisioning a new Azure Database for PostgreSQL flexible server

2. In the Compute + Storage section, click Configure, and select Premium SSD v2 as the storage type.

3. In High availability, select the Same zone or Zone redundant HA option.

4. Choose your authentication method, then click Review + Create.

Premium SSD v2 – HA Limitations during preview

• Read replicas, geographically redundant backups, data encryption with customer managed keys, Major Version Upgrade, Long Term Retention or storage autogrow features aren’t supported for Premium SSD v2.


• Premium SSD v2 High availability can only be configured for servers created on or after July 1st. Currently, SSD v2 High availability is supported in Canada Central, Central US, and East Asia regions. Support for other regions will be coming soon.


• You can configure high availability with SSDv2 using PG version 16. Support for all other versions will be coming soon.

To learn more about Premium SSD v2 regional availability, limitations, and other considerations, refer to the documentation here.

Ready to dive in?

We invite you to explore zone redundant high availability with Premium SSD v2 and experience the enhanced performance, resiliency, and scalability it brings to your PostgreSQL workloads. This feature is now available in public preview. Give it a try and share your feedback with us at AskAzurePostgreSQL.

To learn more, read:

• Premium SSD v2 High Availability


• Storage Options with Azure Database for PostgreSQL flexible server


• We are eager to hear all the great scenarios this new feature helps you optimize, and look forward to receiving your feedback at https://aka.ms/PGfeedback.


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Thank you for choosing Azure Database for PostgreSQL.