## Path Offline for the target volume 

If a target volume goes path offline but the source volume is still online, and if there are any dependent mappings, those target volumes also go path offline. The source volume remains online. 

## 10.3.16 Asynchronous notifications 

FlashCopy raises informational event log entries for certain mapping and Consistency Group state transitions. These state transitions occur as a result of configuration events that complete asynchronously. The informational events can be used to generate Simple Network Management Protocol (SNMP) traps to notify the user. 

Other configuration events complete synchronously, and no informational events are logged as a result of the following events: 

GLYPH<SM590000> PREPARE_COMPLETED 

This state transition is logged when the FlashCopy mapping or Consistency Group enters the prepared  state as a result of a user request to prepare. The user can now start (or stop) the mapping or Consistency Group. 

GLYPH<SM590000> COPY_COMPLETED 

This state transition is logged when the FlashCopy mapping or Consistency Group enters the idle_or_copied  state when it was in the copying  or stopping  state. This state transition indicates that the target disk now contains a complete copy and no longer depends on the source. 

GLYPH<SM590000> STOP_COMPLETED 

This state transition is logged when the FlashCopy mapping or Consistency Group enters the stopped  state as a result of a user request to stop. It is logged after the automatic copy process completes. This state transition includes mappings where no copying needed to be performed. This state transition differs from the event that is logged when a mapping or group enters the stopped  state as a result of an I/O error. 

## 10.3.17 Interoperation with Metro Mirror and Global Mirror 

A volume can be part of any copy relationship (FlashCopy, Metro Mirror, or Remote Mirror). Therefore, FlashCopy can work with Metro Mirror and Global Mirror to provide better protection of the data. 

For example, Metro Mirror copy can be performed to duplicate data from Site_A to Site_B and then, perform a daily FlashCopy to back up the data to another location. 

Note:  If a volume is set to Transparent Cloud Tiering function, it cannot be part of FlashCopy, Metro Mirror, or Remote Mirror. 

Table 10-6 on page 491 lists the supported combinations of FlashCopy and remote copy. In the table, remote copy  refers to Metro Mirror and Global Mirror. 

