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Browse Prior Art Database

Redundant Data Storage in Load/Unload Zone

IP.com Disclosure Number: IPCOM000013887D
Original Publication Date: 2000-Dec-01
Included in the Prior Art Database: 2003-Jun-19
Document File: 1 page(s) / 35K

Publishing Venue

IBM

Abstract

Component tests have demonstrated our ability to dramatically reduce the chance of damage in this zone (rounded corners, ABS design, approach velocity). Even with these design changes there is some chance we could see contacts that will cause data damage. To assure data reliability, we are proposing our files ship with an algorithm that forces any data to be written to the file that will be located in the LUL zone have these additional safeguards: 1) data that is stored in the zone have additional ECC stored in another zone on the disk 2) data that is written in the LUL zone be moved out of the zone if other storage space is available. The first point could apply to data anywhere on the disk. For example, if at the time of manufacture there are concerns about disk delaminations or TA defects, this added safety could be selected to allow the files to ship. This feature could also be selectable by the end user. The file would have modestly reduced capacity but a much higher data integrity. 1

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Redundant Data Storage in Load/Unload Zone

    Component tests have demonstrated our ability to dramatically reduce the chance of damage in this zone (rounded corners, ABS design, approach velocity). Even with these design changes there is some chance we could see contacts that will cause data damage. To assure data reliability, we are proposing our files ship with an algorithm that forces any data to be written to the file that will be located in the LUL zone have these additional safeguards:

1) data that is stored in the zone have additional ECC stored in another zone on the disk
2) data that is written in the LUL zone be moved out of the zone if other storage space is available. The first point could apply to data anywhere on the disk. For example, if at the time of manufacture there are concerns about disk delaminations or TA defects, this added safety could be selected to allow the files to ship. This feature could also be selectable by the end user. The file would have modestly reduced capacity but a much higher data integrity.

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