Hello. The cable type used is normally dependent on the back-plane configuration and controller. I do see that both P/Ns FVPCF & 8717G are identical and connect between the 3.5" back-plane to the PERC H730P controller on the 730XD server. Either cable should work under the same configuration without any issue.
We have many R730xd devices installed and have a query with regards to the part number of the RAID cable from the front hard drive backplane to the PERC H730P controller. In one of our servers, the cable has a part number of FVPCF whilst in another server, it has a part number of 8717G. The only difference I can see is that the cable is a different colour. We have tried searching online but cannot see anything untowards. Do both cables work without any issue or is there a specific part number for a particular server? Both servers have PERC H730P controllers installed. Any assistance will be appreciated. 
PERC H730P in R730XD RAID cable part numbers