3.12.11 When Recovering Storage Cluster Continuous Copy Function

In a state where either the Primary Storage or Secondary Storage is stopped, if the copy is started or stopped, there may be times when the Primary Storage or Secondary Storage sessions are not synchronized.

Take measures after confirming the Advanced Copy status and the Storage Cluster Continuous Copy Session status.
The methods for confirming and dealing with the Advanced Copy status and the Storage Cluster Continuous Copy Session status are shown below.

Point

If the command is executed when the session is not synchronized between the Primary Storage and Secondary Storage, the ccm5004 message (detail message is STXC3015) may be output.
If this message is output, after forcibly stopping the copy with one of the following methods, then take action with "Countermeasures":

For using command
Specify the storage device where the TFO status is "Standby" with the -a option and forcible cancel the copy sessions by the accopy fcancel command.
For using Web Console
Refer to "Display/Forcible Suspend/Forcible Cancel Copy Session" in the Web Console Guide, and forcible cancel the copy session.

Advanced Copy Status and Storage Cluster Continuous Copy Session Status

Confirm the status of the Standby-Side Continuous Copy Session from the storage device where the TFO status is "Active".
- When checking by command
  Check using the following commands.
  - acopc query command
    The Standby-Side Continuous Copy Session status can be confirmed from the Standby-Session column.
  - acec query command
    The Standby-Side Continuous Copy Session status can be confirmed from the Standby-Session column.
- When confirming from Web Console
  Refer to "Add/Display/Delete Copy Pair" in the Web Console Guide, and display the copy session. The Standby-Side Continuous Copy Session status can be confirmed from the Standby Copy Session column.
Confirm the status of the Active-Side Continuous Copy Session from the storage device where the TFO status is "Standby".
- When checking by command
  Check using the following command.
  - accopy query command
    Specify the storage device where the TFO status is "Standby" for -a option to execute the command. The Active-Side Continuous Copy Session status can be checked in the TFO Info column displayed when -tfoinfo option is specified.
- When confirming from Web Console
  Refer to "Display/Forcible Suspend/Forcible Cancel Copy Session" in the Web Console Guide, and display the Copy Session. Active-Side Continuous Copy Session status can be confirmed from the Storage Cluster/Session Status column.

Countermeasures

Advanced Copy Status of Storage Where TFO Status Is "Active"	Storage Cluster Continuous Copy Session Status	Action
OPC Starting OPC Executing	When the Standby-Session column for the acopc query command, or the Standby copy Session column for Web Console is "Not-Exist".	Execute the acopc start command. When taking measures on Web Console, refer to "Perform Advanced Copy" in the Web Console Guide, and start the copy.
EC Starting EC Executing	When the Standby-Session column for the acec query command, or the Standby copy Session column for Web Console is "Not-Exist".	Execute the acec suspend command to temporarily suspend EC (Suspend). Execute the acec resume command to resume EC. When taking measures on Web Console, refer to "Perform Advanced Copy" in the Web Console Guide and to temporarily suspend/resume copying.
EC Suspend	When the Standby-Session column for the acec query command, or the Standby copy Session column for Web Console is "Not-Exist".	Execute the acec resume command, to resume EC. Execute the acec suspend command, to temporarily suspend EC (Suspend). When taking measures on Web Console, refer to "Perform Advanced Copy" in the Web Console Guide and to resume/temporarily suspend copying.
OPC Error Suspend EC Error Suspend	When the Standby-Session column for the acopc query or acec query command, or the Standby copy Session column for Web Console is "Not-Exist".	Execute the acopc cancel or acec cancel command, and stop the copy. Execute the acopc start or acec start command, and start the copy. When taking measures on Web Console, refer to "Perform Advanced Copy" in the Web Console Guide and to suspend/resume copying.
OPC action not startup EC action not startup	When the TFO Info column for the accopy query command, or the Storage Cluster/Session Status column for Web Console is "unpaired".	Specify the storage device where the TFO status is "Standby" with the -a option and forcibly cancel the copy sessions with the accopy fcancel command. Execute the acopc start or acec start command, start the copy. When taking measures on Web Console, refer to "Display/Forcible Suspend/Forcible Cancel Copy Session" and "Perform Advanced Copy" in the Web Console Guide and to force stop/start copying.