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Chapter 9 - Data Protection > FALLBACK Protection - Pg. 202

Master the Teradata Architecture FALLBACK Protection United we stand divided we fall." -Circular letter, Boston during the American Revolution FALLBACK is a table protection feature used in case an AMP fails. Fallback is similar to mirroring in that a duplicate copy of a row is created and maintained on another AMP for redundancy purposes. Essentially, anytime you define a table with Fallback you are using twice the space. You can use FALLBACK on all tables, some tables or no tables. You can also create a table with or without FALLBACK and then add or drop the feature at any time. Divided we stand united we Fallback." -AMP during the computer revolution Fallback is similar to mirroring in that it creates and maintains a duplicate copy of each row, but it is designed in a revolutionary manner for performance purposes. With