The backup process must
be run while all the cluster nodes are running. If the backup process
is run while some of the nodes are down, you might see error messages,
such as ERROR: Operation "backup" failed
because: There are no members in the distributed system.
The backup process
uses GemFire configuration information that has been set up by the
SAS installer. There is considerable variation across different platforms
regarding how and where this information is stored. Make sure that
you are following the correct instructions for invoking the GemFire
backup process for your platform. Otherwise, you might see messages,
such as ERROR: Operation "backup" failed
because: There are no members in the distributed system.
The restore process
must be run when all of the cluster nodes are shut down. In some operating
systems, you might receive errors about locked files.