You can do a "Test Copy" at any time once the CG is synchronized and has bookmarks to chose from. Doing the test will keep the prod online and provide you with a copy at the target site for you to play with and validate the data. If you are planning to do this right before the failover as a test (i.e - test and then immediately failover), then you can chose the "test a copy and failover" option in the GUI for that process.  for the second query - you journals will always be fully written after they ramp up storing all the snapshots. So that is normal to expect since they store all of the point-in-time images and fill up the journal and then rotate off as your protection window rotates.  for the third query - there is no "failback" at that point, you would essentially just repeat the failover process back to the original site and that would give you your "failback"  When you failover and execute that portion, that is when the source devices go WD so that is when you want to make sure all your applications are shutdown gracefully, etc.
Hi Guys,  This is jay, I need  your Help on few things of Recovery Point.  I want do some Testing on a Consistency Group that is Critical and replicating to Other site.  We are going to do a Permanent Fail over in Future for this CG's, can we test by pausing the transfer of the CG and Mounting the Datastore  at Secondary Site and see How it is working and the data in it.  I just want to do a Test on the CG before Main Event, I sthere any Method to do this without disturbing the Production.  Can we do a Test A Copy.  My Second Query is I have been getting some Alerts in third party monitoring tool solarwinds saying your Journals capacity is full, what happens the Journal's are full , do we loose any data?  Third Query:  is I did Test a copy and Failover testing on one of the  TEST CG, this is my first time, I just followed the procedure ,shutdown the source, bookmark, pause the transfer, mount the copy at secondary and it showed failover and I selected failover. If we want to fallback what is the procdure after failover , it didn't showed any fallback option.   If we were doing Permanent Failover at what time and step,weneed to Unmount the Source Datastore and when Mounting the Datastore at Secondary do we need to use the keep signature or new signature.  Kindly answer my Query's , that would be a great help.
Recovery Point Failover