Seagate Technology Incorporated

Ricardo SoonLian Lim

Xiong Liu

KianKeong Ooi

Qiang Bi

UttHeng Kan

Edmun ChianSong Seng

BengWee Quak

WingKong Chiang

Patrick TaiHeng Wong

Jimmy Pang

WeiMing Yeow

TaiVie Chiang

MingZhong Ding

Wesley Chan

Patrick TaiHeng

MingZhong Dong

A storage medium format is provided having a first band of a plurality of consecutive data storage tracks having user data stored thereto, a second band of a plurality of consecutive data storage tracks having other user data stored thereto, and a guard track medially disposed therebetween the first band and the second band and having system data stored thereto.

Data storage medium having system data stored in a guard band between zones of consecutive data storage tracks

A data storage medium and data storage system with improved efficiency of formatting are provided. One illustrative embodiment of the present invention pertains to a data storage medium. The data storage medium includes a first zone having servo information written with a first frequency, a second zone having servo information written with a second frequency, and a guard band disposed between the first zone and the second zone. The use of different frequencies in different zones contributes to optimizing the properties of the data storage medium, and the guard band contributes to optimizing the usage of the different zones.

Data storage medium with optimized servo format

Minimal and maximal numbers are established defining two levels of retry attempts to read system information from a storage medium. Multiple copies of the system information are stored on the storage medium. Attempts are made to successively read the copies until either the system information is successfully read or the system information is not successfully read from any copy of the system information after the minimal number of attempts on each copy. If the system information is not successfully read, attempts are made to successively read the copies until either the system information is successfully read or the system information is not successfully read from any copy of the system information after the maximal number of attempts.

Multi-tiered retry scheme for reading copies of information from a storage medium

Growing community of inventors

Singapore, Singapore

Ricardo SoonLian Lim