Self-servo writing process of writing track and sector information on HGST hard disk drives improves performance, reliability and cost

This paper describes the sources of error in Self Servo Track Writing (SSW) and how they are mitigated. Comparison of this process with the competitor´s process show improved quality of tracks and sectors. Hence enhancing the reliability of the data stored in the HGST drives and the performance data access. Moreover this process of helium sealed drives comes only from HGST, using remarkably less energy compared with traditional drives and is now used widely in cloud storage uses this unique process.