The Essentials Service Pac offering provides three-year 24x 7x 4-hour response hardware warranty upgrade, including three-year remote technical software support for clients running Microsoft Windows & Linux (Red Hat & SUSE) operating systems. IBM Systems Director support is also included. Service Pac offerings are available through the same IBM business partners who sell the related IBM hardware. With this Service Pac offer, you get an upgrade solution & software support at the same time you purchase the IBM machine. The number of unique Service Pac offerings are kept to a minimum, & each part number supports a range of machine types.