Storage device data overlay tracking and prevention
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United States of America Patent
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Oct 18, 2016
Issued Date -
N/A
app pub date -
Dec 30, 2015
filing date -
May 26, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
Aspects of the disclosure are direct towards managing data overlay in a direct access storage device (DASD) using metadata of data stored within the DASD. The DASD receives user input. The user input includes a value indicating activation of overlay tracking for a track of the DASD. The DASD updates the metadata to indicate overlay tracking activation. The DASD detects a write request from an application to overlay data on the track. In response to overlay tracking being activated for the track, the DASD determines the access method used to transmit the write request. The DASD determines an identifier for the application. The DASD determines the identifier using the protocol of the access method. The DASD records data regarding the write request within the metadata. In response to recording the data regarding the write request, the DASD overlays the track per the write request.
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