AppSync enables refreshing both first and second-generation copies in one of two ways.
- Repurposed Copies: Like the menu seen in Figure 18, clicking Copy Management > Repurposed Copies launches a holistic view of all repurposed copies. You must only select the copy, click MORE, and click Refresh.
- Copy Management Copies: Go to Copy Management > Copies, as seen in Figure 19, select the copy, and click MORE > Refresh.
AppSync uses two types of refresh policies for file system workflows:
- Native array: AppSync can use the native array’s refresh technology policy. PowerStore appliances use a clone refresh operation which deletes the current contents of the clone, including any changes to that clone, and updates the clone with the contents of the source device. There should be no changes to the production volume or the volume group from the last refresh time up until the current attempt to refresh.
- AppSync Method: AppSync deletes the previous copy, and creates a copy; this process is hidden to the user. This process appears as if it is a native array refresh operation. However, AppSync uses its own method of refreshing for efficiency purposes. It is sometimes more efficient to delete the clone and create a new one, rather than update a series of tracks.