There seems to be a bit of confusion for some people as to what they should be using when it comes to hard drives.
There are those that will disagree with this and say they use SATA in a server or SCSI at home. For those then you probably know what you are doing so reading this is a bit moot.
If you are a home user then use SATA. Spending megabucks on SCSI would be a waste of your money and you are quite unlikey to see the benifits of it over SATA. SATA is fast enough for everything I have needed at home, and more.
If you are running a server that is on 24/7 and you expect it to remain that way for a very long time and you don’t want to be called ot at 4am in the morning to replace a disk, use SCSI.