FlashCopy commands
Use this information to learn about commands available for FlashCopy® sessions. To issue a command, go to and click the command.
| Command | Action |
|---|---|
| Flash | Performs the FlashCopy operation
using the specified options. Issue the Flash command to create a data consistent point-in-time copy
for a FlashCopy Session with volumes on the following
storage systems:
|
| Discover |
Assimilates existing hardware relationships in a FlashCopy session on DS8000 and Spectrum Virtualize
based storage systems.
Note: For DS8000 systems, although discovered pairs are set consistent, the session is not
able to validate that they are consistent to the time of all other pairs in the session. Be careful
when using the feature, and keep this situation in mind if a restore has to be performed.
See Assimilate FlashCopy relationships for more information. |
| InitiateBackgroundCopy | Copies all tracks from the source to the target immediately, instead of waiting until the source track is written to. This command is valid only when the background copy is not already running. |
| Refresh States | Refreshes the states of the role pairs that are in the session (if applicable for the session type) and refreshes the state of the session if it is incorrect. This command queries the states of the copy sets on the hardware. You are not required to run this command under typical circumstances; Copy Services Manager refreshes the states of its sessions through multiple means. However, if you discover an inconsistency between Copy Services Manager and the hardware, you can use this command to enable Copy Services Manager to update itself. This command triggers multiple queries on the hardware, which can impact hardware performance. Do not run this command more frequently than every few minutes in each session. This command is not available if the session is in the Defined state. |
| Restore | Restores the point-in-time relationships from the target volumes to the source volumes of the FlashCopy session, and overwrites any data on the source volumes. Notes:
See Restoring a FlashCopy session for more information.
|
| Start | Performs any steps necessary to define the relationship before performing a
FlashCopy operation. For
DS8000, this command is not an option. Issue this command to
put the session in the prepared state for the following storage systems:
|
| Terminate | Removes all active physical copies and relationships
from the hardware during an active session. If you want the targets to be data consistent before removing their relationship, you must issue the InitiateBackgroundCopy command if NOCOPY was specified, and then wait for the background copy to complete by checking the copying status of the pairs. |
| Add Update Associations | This command can be issued from the Session Actions->View Modify->Session
Associations drop down, or by clicking on the link next to the Associated Session on the Session
Details panel. The command will pop up a dialog that will allow you to associate this FlashCopy
session to another session defined on the server. Associating the FlashCopy session to another session will cause the session to validate that all H1 volumes in the FlashCopy session match the volumes in the associated role of the associated session. If the volumes do not match, a warning will display on the FlashCopy session. In addition, the association may enable additional commands, such as the Flash 3rd Site command on the 4 Site Replication Enhanced session. On the dialog, select a value for each of the following questions:
|
| Remove Associated Session | This command can be issued from the Session Actions->View Modify->Session Associations drop down. The command will remove any association to another session that may have been previously defined. |