Lenovo THINKSERVER 3821 - Manual (Page 285)

Purchasing additional services
During and after the warranty period, you can purchase additional services, such as
support for hardware, operating systems, and application programs; network setup
and configuration; upgraded or extended hardware repair services; and custom
installations. Service availability and service name might vary by country or region.
For more information about these services, go to the Lenovo Web site at
http://www.lenovo.com/.
Lenovo product service
Appendix A. Getting help and technical assistance 277