Patent ID: 9368130
Filing Date: 2016-06-14
CPC Classification: G11B

Claim Text:
1. A data storage system comprising: a determination circuit configured to determine whether to write first data to a first portion of a memory or to a second portion of the memory, wherein the first portion comprises shingled-magnetic recording zones, and wherein the second portion comprises non-shingled-magnetic recording zones; and a control circuit configured to control the writing of the first data to the first portion in a log structured manner, wherein the control circuit is configured to control the writing of the first data such that the first data is stored in a form of a circular log, wherein the circular log has only one header and only one end, wherein the header defines the first data as written to the first portion, wherein the circular log comprises a plurality of ring-shaped bands of the memory, and wherein the control circuit is configured to, during the writing of the first data to the first portion, append the first data to the header and move the header relative to the end.