Overview of Redundant Systems
Redundancy in computing and networking is crucial for ensuring business continuity and preventing downtime. This whitepaper explores various types of redundant systems and their implementations across hardware and software services.
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Key Topics Covered:
- Types of Redundant Systems: Active-Inactive (Hot-Cold), Active-Active (Hot-Hot), and Active-Standby (Hot-Warm) configurations, each with unique approaches to maintaining system uptime.
Examples of Redundant Software Services:
- Hyper-V Replica: A hot-warm redundancy solution for virtual machines, enabling replication of primary VMs to a separate physical host for failover protection.
- Hyper-V Clustering: Clustering VMs on a singular host for local redundancy and load balancing through virtual networking.
- HAProxy: A Linux-based load balancer and high-availability solution for TCP and HTTP-based applications.
Examples of Redundant Hardware Services:
- RAID (Redundant Array of Independent Disks): Different RAID levels (RAID 0, RAID 1, RAID 5, RAID 10) for data protection and increased disk I/O performance.
- Networking Redundancy: First Hop Redundancy Protocols (FHRP) like VRRP, HSRP, and GLBP for redundant gateways and load balancing.
- Data Center Redundancy: Uptime Institute's tiered classification system for data center fault tolerance and high availability.
Download this helpful guide to:
- Understand the importance of redundancy in maintaining system availability.
- Learn about different types of redundant systems and their applications.
- Explore examples of redundant software and hardware services.
- Gain insights into data center redundancy and tiered classifications.