NESN is a country/region code … see here : Difference between EESN and PESN on WD
WDBBGB0060HBK doesn’t appear on the Synology Website as a tested compatible hard drive … probably because it’s not an internal hard drive. : https://www.synology.com/en-global/compatibility?search_by=category&category=hdds&filter_brand=Western%20Digital&filter_size=6TB&p=1
If you buy a My Book with the intention of removing from the enclosure there’s no guarantee what you’ll get as WD can change the class at any time. A My Book hard drive can be either a GREEN or BLUE class drive.
RED class is recommended for NAS’s … My Cloud’s have RED hard drives in their enclosure … have never seen any My Books with RED drives 
VID = Vender ID : PID = Product ID : Rev = Firmware Revision (most likely)
If you’re intending to remove the hard drive from the enclosure to install into the Synology NAS … there’s no way to verify if it’s compatible outside it’s intended use as an External Hard Drive.
