Choosing the Right Database Migration Strategy: Real-World Lessons and Pitfalls

This article shares practical experiences and lessons learned from over a hundred database migration projects, comparing storage replication, logical replication, and ASM disk‑group rebalancing, and explains how system context, vendor capabilities, and careful planning determine the most suitable approach.

ASMLogical ReplicationOracle

0 likes · 10 min read

Choosing the Right Database Migration Strategy: Real-World Lessons and Pitfalls

Architects' Tech Alliance

Sep 24, 2017 · Operations

Understanding EMC SRDF/Metro Dual‑Active and VDM MetroSync High‑Availability Storage Solutions

The article explains EMC's SRDF/Metro dual‑active storage solution and VDM MetroSync NAS high‑availability architecture, detailing how active‑active configurations work, bias and witness options, deployment steps, and their role in ensuring continuous data access across clustered environments.

EMCMetroSRDF

0 likes · 10 min read

Understanding EMC SRDF/Metro Dual‑Active and VDM MetroSync High‑Availability Storage Solutions

Architects' Tech Alliance

Sep 19, 2017 · Industry Insights

Unlocking Dual‑Active Storage: Inside HDS’s HAM and GAD High‑Availability Architecture

This article explains HDS’s High Availability Manager (HAM) and Global Active Device (GAD) technologies, detailing how they virtualize mirrored LUNs, use TrueCopy replication, arbitration mechanisms, and various network topologies to provide seamless active‑active storage, support for NAS, and flexible clustering across data centers.

GADHAMHDS

0 likes · 11 min read

Unlocking Dual‑Active Storage: Inside HDS’s HAM and GAD High‑Availability Architecture