Gartner Research

Decision Point for Data Replication for HA/DR

Published: 07 July 2017

ID: G00331742

Analyst(s): Werner Zurcher, Lowell Shulman

Summary

Many data replication technology options are available. Business resiliency requirements, expanding data volumes and new technologies are driving technical professionals to alternatives to storage array-based solutions. This document recommends an approach for each set of HA/DR requirements.

Table Of Contents

Decision Point Question

Decision Overview

Decision Tool

  • Step 1: Define Domain of Coverage
  • Step 2: Define Data Replication Principles
  • Step 3: Define Data Replication Requirements and Constraints
  • Step 4: Apply Decision Tool
    • For What Purpose Is Data Replication Performed?
    • What Is the Defined RTO?
    • What Is the Defined RPO?
    • Will the Data Replication Target Location Be Cloud-Based?
    • Are Replication Data Consistency Groups Required?
    • What Is the Main Type of Data Being Replicated?

Principles, Requirements and Constraints

  • Principles
    • Operational Paradigm
    • Single or Multiple Tools
    • Breadth of Supported Infrastructure
    • Technology Maturity
    • Single or Multiuse Capabilities
    • Cost
  • Requirements and Constraints
    • Recovery Requirements
    • Active Data Processing Locale Support Requirements
    • Application, Data Type and Platform Support Requirements
    • Processing/Network/Bandwidth Requirements
    • Management Requirements
    • Operational Requirements
    • Infrastructure and Technology Constraints
    • Organizational and Budgetary Constraints

Alternatives

  • Host-Based Data Replication
    • Application-Specific Transaction Replication
    • Database (Log) Replication
    • File Replication
    • Software Volume-Based Data Replication
  • Primary Storage-Based Data Replication
    • Storage Hardware Array-Based Replication
    • Storage Virtualization Appliance-Based Data Replication
    • Data Mirroring Using Storage Network Hardware
    • CSG-Based Replication
  • Backup-Based Data Replication
    • Backup Software-Driven Data Replication
    • Secondary Backup Storage Target-Based Replication
    • Copy Data Management Replication
  • Hypervisor-Based VM Replication
  • Replication Integrated With DR Orchestration
  • Cloud Storage-Based Replication

Future Developments

  • Hyperconverged Integrated Systems (HCISs)-Based Replication
  • Blending of Backup and DR Solutions
  • Public Cloud Options Will Continue to Advance

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