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Storage migrations made simple.
Page 14
Highlights
This chart depicts the bank's local
mainframe array-to-array migration.
5. Administrators migrated the final 50 percent of volumes over the second
week, with still no application impact.
6. When final synchronization had taken place, TDMF software completed the
swap operation to redirect the mainframe I/O to target volumes, which became
primary volumes. Switchover was performed without service outage.
7. Backout option was available in case a failure occurs during any phase. If
needed, original source volume contained all the write operations performed
during the migration.
8. Old volumes were removed from configuration.
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Old storage array
Figure 3
Local mainframe array-to-array migration
Credit and debit
transaction application
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IBM mainframe
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