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This document provides best practices and walkthrough procedures for Non-Disruptive Migration (NDM) with Dell PowerMax, VMAX All Flash, VMAX3, and VMAX Family storage systems.
Prior to the introduction of NDM, migrating from a Dell VMAX storage array to a new VMAX storage array was a time-consuming and tedious process. It required detailed planning and application downtime.
Solutions Enabler Release 8.3 introduced a data migration feature to help automate the process of moving applications from a VMAX array to a VMAX3 array without application downtime in a non-disruptive fashion. NDM leverages VMAX replication technologies to move the application data to the new array, and it leverages VMAX Auto-Provisioning, in combination with host multipathing software, to manage and maintain host access to the data during the migration process.
With each release of HYPERMAX OS and PowerMaxOS along with Solutions Enabler, the core functionality of NDM has been iterated in order to streamline the user experience and align the support matrix to customer needs.
This document describes both versions of NDM:
Each method uses a similar set of commands but has significantly differing underlying architectures leveraging the source arrays abilities.
Throughout this document, the term VMAX Family is applicable to all Dell PowerMax, VMAX 250F, VMAX 450F, VMAX 850F, VMAX 950F, VMAX 100K, VMAX 200K, VMAX 400K, and VMAX arrays.
This document also describes the NDM Update migration feature, in which the source array is running any VMAX or PowerMax code level.