Focused storage pool expansion to prevent a performance degradation
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United States of America Patent
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Jul 23, 2019
Grant Date -
Jan 18, 2018
app pub date -
Jul 18, 2016
filing date -
Jul 18, 2016
priority date (Note) -
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Abstract
Based on a system configuration change (e.g., of a Decentralized, or Distributed, Agreement Protocol (DAP)) within a dispersed storage network (DSN), a computing device identifies a reallocating encoded data slice (EDS) number that is no more than a pillar width minus a performance threshold. The computing device then directs storage units (SUs) to update system configuration of the DAP (e.g., from a first to a second system configuration) by throttling and controlling the number of SUs permitted to update at a time. For example, the computing device permits no more than the reallocating EDS number of SUs to perform simultaneous (or substantially or approximately simultaneous) update of the system configuration of the DAP. The computing device also directs the SUs to operate based on the first system configuration before the condition(s) is/are met and then to operate based on the second system configuration after the condition (s) is/are met.
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