IBM TotalStorage DS8000, User Manual

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Migrating data from an eServer i5 400 or iSeries host system to the
DS8000
Use the following information as a guide to determine how to migrate data from an
eServer i5 400 or iSeries host system to the DS8000.
When you create the eSeries i5 400 or iSeries volume, you can create it as a
protected or unprotected volume. This creation enables you to see the protected
and unprotected models. Unprotected models can be software mirrored.
DS8000 supports 2107 device types with model A81-A87 (unprotected) and
A01-A07 (protected) and you need a level of OS/400 that supports these. The
model numbers correspond to 8.56 GB (A01/A81), 17.54 GB (A02/A82), 35.16 GB
(A05/A85), 36 GB (A03/A83), 70.56 GB (A84/A04),141.12GB (A86/A06), and
282.25 GB (A87/A07).
eSeries i5 400 and iSeries hosts require a separate device address for each drive
in the subsystem. The DS8000 meets this requirement by reporting unique
addresses for each virtual drive that is defined to the eSeries i5 400 or iSeries host.
32 LUNS per iSeries FC adapter are supported by the on the OS/400 as well as
multipathing to a storage unit.
Because the eSeries i5 400 or iSeries host does not support 7133 drawers, you
have no existing 7133 drawers to reformat. If you have an existing disk subsystem
that you are replacing with a DS8000, you must migrate the data to the DS8000.
Use your existing host utilities for the data migration.
You can select from several methods to migrate data to the DS8000:
v You can use the logical add and remove functions.
v
You can use save methods and restore methods with tape devices.
You can also use these methods if you remove an existing disk subsystem before
you install the DS8000.
Note: From a DS8000 logical configuration viewpoint, all eSeries i5 400 and
iSeries volumes are RAID 5 and are protected. When you create the eSeries
i5 400 or iSeries volume, you can create it as a protected or unprotected
volume. This creation enables you to see the protected and unprotected
models. Unprotected models can be software mirrored.
Migrating data from an S/390 or zSeries host system to the DS8000
storage unit
You can use various methods to migrate data from an S/390 or zSeries host system
to a DS8000 storage unit. The correct method depends on your environment and
system.
The following table highlights a few of the data migration methods available:
Environment or Operating System Data Migration Method
S/390 environment IBM TotalStorage z/OS Global Mirror,
Remote Mirror and Copy (when available)
zSeries environment IBM TotalStorage z/OS Global Mirror,
Remote Mirror and Copy (when available)
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DS8000 User’s Guide