Included in the list are Seagate's most popular drives, the Barracuda 7200.12 and Momentus Green product series.
Barracudas are 3.5-inch form factor and used for desktop builds while the slimmer Momentus are 2.5-inch and used for notebooks, or as slim external drives.
Enterprise models, like the XT series, will keep its five-year warranty.
It is unclear when the new move will go into effect.