GUARDIAN PRO - 3YR PLAN WD Guardian Pro is perfect for users who wish to maintain their own storage server and also get access to WD's Technical Support when extra assistance is needed. Business Hours Technical Support for the duration of the plan. Hardware Support and Express Parts replacement for the duration of the plan. Priority Access to Technical Support through a dedicated Support Line. Choose between a one-year and a three-year plan with an option to renew. Must be activated within 30 days from the date of purchase.