High availability

Concept

A system design goal of keeping services operational with minimal downtime, typically achieved through redundancy such as standby replicas.

Title graphic: High availability (Concept)

Type	Concept
Wikipedia	en.wikipedia.org/wiki/High_availability

Key points about High availability

Azure Database for PostgreSQL Flexible Server is pricey because defaults quietly overprovision compute, storage and high availability, not because of traffic. · Reduce Azure PostgreSQL Flexible Server Costs
Backups, high availability and encryption come switched on; the episode also compares it with a virtual machine. · Azure SQL Database - Simply Explained
Covers architecture, high availability, scoping, security, hybrid environments, the decision between Cloud Sync and Entra Connect and what has changed in 2026. · Microsoft Entra Cloud Sync - Simply Explained
High availability, redundancy, failover, automated recovery and geo-resilient data protection are the key patterns. · Design Reliable and Resilient Azure…

Episodes about High availability

Reduce Azure PostgreSQL Flexible Server Costs

2025-11-03 · Video on YouTube

Azure Database for PostgreSQL – Flexible Server isn’t pricey because of traffic; it’s pricey because defaults quietly overprovision compute, storage, and HA. “Managed” means patched, not optimized—you still pay for VM cores at idle, disks that only grow, and…

Azure SQL Database - Simply Explained

2026-10-28 · Video on YouTube

Running your own database server means patching, backups and late-night failovers. This beginner-friendly episode explains Azure SQL Database: how the DTU and vCore models differ, which tier to pick, when elastic pools and serverless save money, and how…

Microsoft Entra Cloud Sync - Simply Explained

2026-08-15 · Video on YouTube

Many organizations still keep identities in on-premises Active Directory while their people work in Microsoft 365. This knowledge nugget helps identity admins understand Microsoft Entra Cloud Sync, how it differs from Entra Connect, what changed in 2026, and…

Design Reliable and Resilient Azure Architectures

2025-11-03 · Video on YouTube

Building reliable and resilient systems in Microsoft Azure isn’t just a technical exercise, it’s a strategic advantage, and in this episode we unpack exactly how to architect cloud environments that stay up even when everything around them fails. You’ll learn…

Timeline of episodes about High availability

Articles about High availability (2)

Basic vs. Standard Azure Load Balancer: Which One Do You Need?
2026-08-27 · Mirko Peters
When architecting cloud infrastructure in Microsoft Azure, ensuring high availability, optimal performance, and fault tolerance is non-negotiable. At the heart of m…
Azure PostgreSQL – Flexible Server: How Defaults Quietly Waste Thousands and How to Fix Them
2025-11-21 · Mirko Peters
Azure PostgreSQL defaults can inflate your cloud bill. See how to spot hidden costs, optimize settings, and save thousands on Flexible Server today.

Frequently asked questions

Why is Azure PostgreSQL Flexible Server so expensive?

Defaults overprovision compute, storage and high availability. Managed means patched, not optimized, so you still pay for idle VM cores, disks that only grow and standby replicas that mostly sit unused. · From the episode: Reduce Azure PostgreSQL Flexible Server Costs

Does high availability double my PostgreSQL costs?

In most tiers, HA mirroring bills about twice for little business value, according to the episode. The advice is to reserve HA for revenue-critical systems and not enable it everywhere. · From the episode: Reduce Azure PostgreSQL Flexible Server Costs

Should I use Azure SQL Database or a virtual machine?

Choose Azure SQL Database when you would rather not run the server yourself, since backups, high availability and encryption come switched on. · From the episode: Azure SQL Database - Simply Explained

Which topics does the episode cover when choosing between the two?

Architecture, high availability, scoping, security and hybrid environments, to decide between Cloud Sync and Entra Connect. · From the episode: Microsoft Entra Cloud Sync - Simply Explained

Glossary

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Sources

Wikipedia: en.wikipedia.org/wiki/High_availability
Feed for this topic (RSS): entity/high-availability/feed.xml
M365.FM episodes on this topic: 4
Articles on this topic: 2

Maintained by Mirko Peters (Microsoft MVP) · Last updated: 2026-11-03