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v Some DS8000 functions are not available or supported in all environments. You
Planning data migration
The planning and methods of data migration for the DS8000 vary by environment.
The DS8000 supports over 90 operating systems. You can migrate data to a
storage unit from these host and operating system environments.
When you plan for data migration, consider the following factors:
Note: The following lists do not cover every possibility. They provide a high-level
v The system:
v The storage unit:
v Time and complexity involved:
How to select a data migration method
Your system administrator selects the data migration method that is the best
compromise between efficiency and impact on the users of the system.
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DS8000 User's Guide
– Model conversions. In addition, data may not be preserved during the model
conversion.
– Field attachment of the first Model 92E expansion unit to a Model 922.
– Field attachment of the first Model 9AE expansion unit to a Model 9A2.
– Removal of an expansion unit model from the base unit model. Data may not
be preserved during this activity.
can find current information about supported environments, prerequisites, and
minimum operating systems levels at the following IBM Web site:
http://www.ibm.com/servers/storage/disk/ds8000/interop.html
view of some of the tools and factors that you can consider when moving
data.
– Is it UNIX based? You will probably use some variation of a logical volume
manager.
– Is it a zSeries or S/390? You will probably use IBM
Mirror, Remote Mirror and Copy (when available).
– Is it z/OS? You will probably use DFDSS, though there are many choices.
– Is it VM? You might use DASD Dump Restore or PTAPE.
– Is it VSE? You might use the VSE fastcopy or ditto commands.
Your system administrator selects the data migration method that is the best
compromise between efficiency and impact on the users of the system.
– Are the storage units involved the same with the same level of licensed
management code?
– Are the storage units different? In which case you want to ensure that the new
configuration is large enough to accommodate the existing data. You also
want to ensure that the virtual disks are similar in configuration to the disk
drives that they are replacing.
– Typically data migration requires that updates or changes cease while the
movement occurs. Also, depending on the amount of data that you are
moving and your migrating method, data could be unavailable for an extended
period of time, perhaps several hours.
– Could the complexity and time involved require the services of IBM through
International Global Services? Contact your IBM representative for more
information.
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