How to best way to configure a relinked a target Volume on symsnapvx with Vmware datastore big volume

We have a big volume on datastorage or SG groups on VMWare environments, and every day he takes a relinked a target volume(new incremental) or SG with symsnapvx. On my test environmet I used only a 3TB volume to make a relinked test to change a Symmir and Symclone emulate to symsnapvx command It takes a long time to rescan a big volume(1 hour and half to 3TB), and when it finished, we could be enable to use this relinked target to test a recovery environment. I do not know but I think that when a target volume has a rescan to news PiT, it is No access mode to a host(target volume) but it takes a lot of time to stay RW again(1 hour an half to 3TB). I had others concepts about symclone, symmir uses on past and I try to change a Symclone and Symmir emulates commands to new symsnapvx. we use a Hypermax OS  5977-1125-1125 version 6560. There are a best way to relinked a target with a big volume or SG to test a recovery environment and it do not take a several hours to my target volume stay a RW enable again? I do not know if we need to take a 2 target relinked one Nocopy( to test recovery environment) and other Copy mode to full copy. I will appreciate some comments.