Hi Dave,  you are searching for the "--target-compare-initial-sync on" switch for the isi sync policies modify.  afaik the diff-Switch only is usefull if you have big files. small files (lower 128K ?) will be replicated instantly since checksumcalculation and comparisson takes more time, than transferring  Regards --sluetze
Here is scenario   Can a Isilon SyncIQ policy be created without copying all the data from the source to the target over a slow WAN link?  Only pick up the differences after the migration to the Isilon.  Lemme know.  Thanks, Dave
Seeding a Target Array - Then setup SyncIQ policy?