4TB不用這麼麻煩了，從型號判斷就好
目前Seagate販售過的4TB 碟數也只有兩種可能罷了
5-platter (7200rpm)
Seagate Barracuda XT 4000GB (ST4000DX000)
Seagate Constellation ES.3 4TB (ST4000NM0023/ST4000NM0033/ST4000NM0043)

4-platter (5900rpm)
Seagate Desktop HDD 4000GB (ST4000DM000)
Seagate NAS HDD 4000GB (ST4000VN000)
Seagate Video 3.5 HDD 4000GB (ST4000VM000)
Seagate Terascale HDD SED (Constellation CS SED) 4000GB (ST4000NC000)