as in any unix environment you can put commands in the background by using "&" as character after the command  isi_vol_copy &   this should enable you to close the putty and shut down the Laptop.  Regarding the logfile i recommend to take a look into /var/log/isi_vol_copy.log  less /var/log/isi_vol_copy.log
we are migrating from a Netapp to Isilon using Isi_Vol_copy, so we are using a laptop and it has to be shut down everyday after work, do I need the putty session to be open during the whole migration?  Also how can I generate and read the log file.
isi_vol_copy do i need the session open during the whole migration