Hello Aneesh Joseph, No you can’t replace a SAS with a SATA.  Even though the drive will be accepted due to the SAS & SATA being 2 different speeds it will not work correctly in the NF600.  You will need to replace it with a SAS drive.   Please let us know if you have any other questions.
Hello All,  I am having a NAS with power vault nf600 server.I am using a Raid 5 configuration with 1TB SAS hardisk (Six 1TB SAS disks + One 1TB SAS dedicated hot spare).One of my disk in position 3 is failed.I want to replace the failed disk.Can I replace the faulty disk with a 1TB SATA disk...? Is it possible to replace online..?  Thanks in Advance  Regards, Aneesh Joseph
power vault nf600