Recovering from data loss using copy services relationships between volumes
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United States of America Patent
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Jul 6, 2021
Grant Date -
Jul 30, 2020
app pub date -
Jan 25, 2019
filing date -
Jan 25, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
A computer-implemented method, according to one embodiment, includes: in response to experiencing a loss of data at a first track of a source volume, determining whether a copy of the lost data has been stored at a second track of a target volume. Moreover, in response to determining that a copy of the lost data has been stored at a second track of the target volume, determine whether the copy of the lost data has been altered since being stored at the second track of the target volume. In response to determining that the copy of the lost data has not been altered since being stored at the second track of the target volume, a request for the copy of the lost data is sent to the target volume. In response, the copy of the lost data is received, and used to recover the lost data.
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