Performance and operational aspects of LHCb's VELO and ST

The LHCb experiment aims at the search for New Physics with the study of rare heavy hadron decays and the study of CP violation in the decays of charm and beauty hadrons. The detector, a single-arm spectrometer at the Large Hadron Collider (LHC), Geneva, includes a high precision tracking system: a silicon-strip vertex detector, a silicon-strip tracker upstream of the magnet, and three stations of silicon-strip detectors and straw tubes downstream of the magnet. The excellent performance of the silicon-strip detectors during the first run of the LHC is detailed, focussing on the most recent studies. Highlights will include alignment, cluster finding efficiency, single hit resolution, and impact parameter and vertex resolutions, with updates based on recent results from the 2012 LHC running.