Hello,  During the script all Celerra Replicator V1 sessions are converted to V2. There should be no impact to your production file systems.Please keep in mind the script is intended  for Celerra Certified Engineers or Field Support Specialist (FSS) level or who have equivalent experience and are responsible for upgrading customers from Replicator V1 to Replication V2.They will be able to work with you to ensure the proper procedure is followed.  Here are the basic steps.........  While configuring V2 sessions, the script uses the V1 restart checkpoint as a common base and performs a differential copy instead of a full copy. After the upgrade script completes, the user can configure new Replicator V2 sessions. 
What gets upgraded by running the following:  /nas/sbin/upgrade_repv1_to_repv2 -start  Is underlying replicator code upgraded?  Or only converts current replicator v1 sessions to v2?  How disruptive can this be on production systems?  Message was edited by: SatEnthu
What is actually upgraded by initiating the upgrade_repv1_to_repv2 -start 
command?