Environmental requirements for Non-Disruptive Migration
The following configurations are required for a successful data migration:
Array configuration
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The target array must be running HYPERMAX OS 5977.811.784 or higher. This
includes VMAX3 Family arrays and VMAX All Flash arrays.
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The source array must be a VMAX array running Enginuity 5876 with required
ePack (contact Dell EMC for required ePack).
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SRDF is used for data migration, so zoning of SRDF ports between the source and
target arrays is required. Note that an SRDF license is not required, as there is no
charge for NDM.
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The NDM RDF group is configured with a minimum of two paths on different
directors for redundancy and fault tolerance. If more paths are found up to eight
paths will be configured.
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If SRDF is not normally used in the migration environment, it may be necessary to
install and configure RDF directors and ports on both the source and target arrays
and physically configure SAN connectivity.
Host configuration
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It is recommended to run NDM commands from a control host (a host separate
from the application host).
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Both the source and the target array should be visible to the controlling host that
runs the migration commands.
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If the application and NDM commands need to run on the same host, several
gatekeeper devices must be provided to control the array. In addition, in the
daemon_options file the gatekeeper use (gk_use) option must be set for
dedicated use only, as follows:
1. In the /var/symapi/config/daemon_options file, add the line
storapid:gk_use=dedicated_only
2. Save the file.
3. Run the command # storedaemon action storapid -cmd reload to
activate the new options setting.
A gkselectfile, that lists gatekeeper devices is recommended. For more
information on the gkselect file, refer to EMC Solutions Enabler Installation and
Configuration Guide.
Pre-migration rules and restrictions for Non-Disruptive Migration
In addition to general configuration requirements of the migration environment, the
following conditions are evaluated by Solutions Enabler prior to starting a migration.
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A Storage Group is the data container that is migrated, and the following
requirements apply to a storage group and its devices:
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Storage groups must have masking views. All devices within the storage group
on the source VMAX must be visible only through a masking view. The device
must be mapped to a port that is part of the masking view.
Data Migration
168 Product Guide VMAX 100K, VMAX 200K, VMAX 400K with HYPERMAX OS
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