IBM DS8000 User Manual
Page 148
126
DS8000 Series: Concepts and Architecture
Efficient synchronization of the local and remote sites with support for failover and failback
modes, helping to reduce the time that is required to switch back to the local site after a
planned or unplanned outage.
Figure 7-9 Global Mirror
How Global Mirror works
We explain how Global Mirror works in Figure 7-10 on page 127.
2
1
Server write
Write to secondary
(non-synchronously)
Write acknowledge
A
B
C
FlashCopy
(automatically)
Automatic cycle in active session
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