Dell EMC VMAX User Manual

NON-DISRUPTIVE MIGRATION : CONFIGURATION AND BEST PRACTICES TECHNICAL NOTES
VMAX NON-DISRUPTIVE MIGRATION
Configuration and Best Practices Technical Notes
ABSTRACT
Data migrations have always been challenging in an enterprise environment. The
complexity and size of very large storage environments makes planning for, scheduling,
and executing migrations extremely difficult. Migrations also often involve applications
that cannot be taken offline, even briefly for cutover to a new storage array. Dell EMC’s
VMAX Non-Disruptive Migration, or NDM, allows customers to perform online data
migrations that are simple as well as completely non-disruptive to the host and
application.
May, 2017

Dell EMC VMAX Specifications

General

Brand	Dell EMC
Model	VMAX
Category	Speaker System
Language	English

Summary

Overview and Fundamentals of VMAX Non-Disruptive Migration

Executive Summary and Audience

Provides an executive summary and identifies the intended audience for the technical notes.

NDM Overview and Benefits

Introduces Non-Disruptive Data Migration (NDM), its capabilities, and key advantages.

NDM Migration Operations Overview

Details the five core automated operations for VMAX Non-Disruptive Migration.

Key Concepts and Restrictions

Covers device ID manipulation, paths, and operational restrictions for NDM.

Setup and Configuration for VMAX NDM

Requirements and Prerequisites

Outlines the necessary hardware, software, and configuration prerequisites for NDM.

Solutions Enabler Setup Procedures

Details the step-by-step process for setting up NDM using Solutions Enabler.

Unisphere Setup Procedures

Details the step-by-step process for setting up NDM using the Unisphere interface.

VMAX NDM Execution and Management

Host Rescan and CutoverReady State

Explains host rescanning and the CutoverReady state for NDM devices.

Performing Cutover Operations

Details the steps involved in performing a cutover to the target array.

Committing Migration Process

Describes the final commit operation to complete the NDM migration.

Cancelling and Reverting Migrations

Covers procedures for cancelling or reverting an NDM migration.

Recovering from Migration Failures

Explains how to use the recover command for failed or incomplete operations.

Appendices and Support Information

Host Multipathing Software Configuration

Provides notes and settings for various host multipathing software configurations.

Additional Technical Appendices

Covers appendices on specific environments and host reboots during NDM.