With the 3-Year Uplift ServicePlus 4-Hour Support for VTrak x30 & VTrak A-Class Series Units with Drives from Promise Technology, you can upgrade to four-hour on-site response time for Promise ServicePlus, to coincide with the initial 3-year warranty period for VTrak x30 and VTrak A-Class Series products shipped with Promise hard drives. The ServicePlus plan adds 24/7 on-site hardware parts replacement for the duration of the warranty period.