Patent ID: 6295577
Filing Date: 2001-09-25
Classification: G06F,G11B

Abstract:
A disc storage system, comprising:(a) a rotatable storage disc having a disc surface;(b) a spindle motor operably coupled to the disc which is adapted to rotate the disc;(c) a transducer adapted for reading and writing data on the disc surface;(d) a volatile memory cache adapted to store data prior to writing the data to the disc surface;(e) a non-volatile memory cache in the disc storage system adapted to store data during a power loss; and(f) a controller in the storage system adapted to receive data from a host computer interface, temporarily cache the data in the volatile memory cache, and subsequently write the data onto the disc surface with the transducer, the controller further adapted to store the data in the non-volatile memory only upon detection of a power loss to the storage system.