n
Must be dynamic SRDF R1 and SRDF R2 (DRX) capable and be R1 or non-RDF
devices, but cannot be R2 or concurrent RDF devices, or part of a Star
Consistency Group.
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Devices in the storage group to be migrated can have TimeFinder sessions and/or
they can be R1 devices. The migration controls evaluates the state of these
devices to determine if the control operation can proceed.
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The devices in the storage group cannot be part of another migration session.
Migration infrastructure - RDF device pairing
RDF device pairing is done during the create operation, with the following actions
occurring on the device pairs.
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NDM creates RDF device pairs, in a DM RDF group, between devices on the
source array and the devices on the target array.
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Once device pairing is complete NDM controls the data flow between both sides of
the migration process.
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Once the migration is complete, the RDF pairs are deleted when the migration is
committed.
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Other RDF pairs may exist in the DM RDF group if another migration is still in
progress.
Due to differences in device attributes between the source and target array, the
following rules apply during migration:
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Any source array device that has an odd number of cylinders is migrated to a
device on the target array that has Geometry Compatibility Mode (GCM).
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Any source array meta device is migrated to a non-meta device on the target
array.
About Open Replicator
Open Replicator enables copying data (full or incremental copies) from qualified arrays
within a storage area network (SAN) infrastructure to or from arrays running
HYPERMAX OS. Open Replicator uses the Solutions Enabler SYMCLI symrcopy
command.
Use Open Replicator to migrate and back up/archive existing data between arrays
running HYPERMAX OS and third-party storage arrays within the SAN infrastructure
without interfering with host applications and ongoing business operations.
Use Open Replicator to:
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Pull from source volumes on qualified remote arrays to a volume on an array
running HYPERMAX OS.
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Perform online data migrations from qualified storage to an array running
HYPERMAX OS with minimal disruption to host applications.
Open Replicator cannot copy a volume that is in use by SRDF or TimeFinder.
Open Replicator operations
Open Replicator includes the following terminology:
Control
Data Migration
170 Product Guide VMAX 100K, VMAX 200K, VMAX 400K with HYPERMAX OS
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