![]() ![]() In the future, we will provide an option to use Azure Ultra SSD Managed Disk. For storage, our Flexible Server option for Postgres uses Azure Premium Managed Disk. Additionally, you can now place Flexible Server’s compute and storage-as well as your application-in the same Azure Availability Zone, resulting in lower latency to run your workloads. The direct connection also eliminates the need to include suffix in your username on Flexible Server. Your Postgres applications and clients can connect directly to Flexible Server, eliminating the need for redirection through a gateway. Our Flexible Server deployment option for Postgres is hosted on the same platform as Azure Database for PostgreSQL - Hyperscale (Citus), our deployment option that scales out Postgres horizontally (by leveraging the Citus open source extension to Postgres).įlexible Server is hosted in a single-tenant Virtual Machine (VM) on Azure, on a Linux based operating system that aligns naturally with the Postgres engine architecture. If you are looking for a technical overview of what Flexible Server is in Azure Database for PostgreSQL-and what the key capabilities are, let’s dive in.įlexible server is architected to meet requirements for modern apps Your feedback and our learnings have informed the creation of Flexible Server. Over the past several years, our Postgres engineering team has had the opportunity to learn from many of you about your challenges and expectations around the Single Server deployment option in Azure Database for PostgreSQL. Flexible Server is the result of a multi-year Azure engineering effort to deliver a reimagined database service to those of you who run Postgres in the cloud. For more information, see Managed disk bursting.At Ignite, we announced the preview of a new deployment option for Azure Database for PostgreSQL: Flexible Server. You might see higher IOPS in the metrics because of disk-level bursting. Otherwise, the selected storage size limits the IOPS. IOPS marked with an asterisk (*) are limited by the VM type that you selected. Maximum IOPS for your configuration SKU name The relevant metrics to monitor are storage limit, storage percentage, storage used, and I/O percentage. You can monitor your I/O consumption in the Azure portal or by using Azure CLI commands. You can add storage capacity during and after the creation of the server. Even though you can select any storage size independently from the server type, you might not be able to use all IOPS that the storage provides, especially when you choose a server with a small number of vCores. Storage is available in the following fixed sizes: Disk size The total amount of storage that you provision also defines the I/O capacity available to your server. The storage is used for the database files, temporary files, transaction logs, and PostgreSQL server logs. The storage that you provision is the amount of storage capacity available to your Azure Database for PostgreSQL server. The detailed specifications of the available server types are as follows: SKU name vCores represent the logical CPU of the underlying hardware. You can select compute resources based on the tier, vCores, and memory size. For more information, see the Scaling resources section. You also can independently adjust the backup retention period up or down. Examples include servers for processing real-time data and high-performance transactional or analytical apps.Īfter you create a server for the compute tier, you can change the number of vCores (up or down) and the storage size (up) in seconds. High-performance database workloads that require in-memory performance for faster transaction processing and higher concurrency. Examples include servers for hosting web and mobile apps and other enterprise applications. Most business workloads that require balanced compute and memory with scalable I/O throughput. Workloads that don't need the full CPU continuously. To choose a pricing tier, use the following table as a starting point: Pricing tier All resources are provisioned at the PostgreSQL server level. The pricing tiers are differentiated by the amount of compute in vCores that you can provision, the amount of memory per vCore, and the storage technology that's used to store the data. ![]() You can create an Azure Database for PostgreSQL server in one of three pricing tiers: Burstable, General Purpose, and Memory Optimized. Azure Database for PostgreSQL - Flexible Server
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