40 lines
1.4 KiB
Markdown
40 lines
1.4 KiB
Markdown
---
|
|
title: High Availability (Cloud)
|
|
---
|
|
|
|
# High Availability (Cloud)
|
|
|
|
**High Availability (HA)** in cloud computing refers to systems designed to operate continuously without failure, typically by eliminating single points of failure and distributing workloads across redundant infrastructure.
|
|
|
|
## Common Misconception
|
|
|
|
> **Myth**: Cloud performance is unreliable.
|
|
|
|
> **Reality**: Cloud providers offer high availability and redundancy.
|
|
|
|
## Key HA Characteristics in Cloud
|
|
|
|
- **Service Level Agreements (SLAs)**: Major cloud providers guarantee uptime exceeding **99.99%**
|
|
- **Redundant Infrastructure**: Data and services are replicated across multiple geographic regions and availability zones
|
|
- **Automated Failover**: Automatic switching to backup systems when primary systems fail
|
|
- **Global Data Center Distribution**: Workloads distributed worldwide for geographic resilience
|
|
- **Load Balancing**: Traffic distributed across multiple healthy instances
|
|
|
|
## Benefits
|
|
|
|
- Minimized downtime and business disruption
|
|
- Improved user experience and reliability
|
|
- Reduced financial impact of outages
|
|
- Better disaster recovery posture
|
|
|
|
## Related Concepts
|
|
|
|
- [[Cloud Computing]]
|
|
- [[Disaster Recovery]]
|
|
- [[Cloud Migration]]
|
|
- [[Multi-Cloud Strategy]]
|
|
|
|
## Sources
|
|
|
|
- [[The Myths and Misconceptions About Cloud Computing (LinkedIn)|the-myths-and-misconceptions-about-cloud-computing-linkedin]]
|