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    • E-Series Controller cache battery failed even after applying the latest firmware
      https://kb.netapp.com/on-prem/E-Series/SANtricity-OS-KBs/E-Series_Controller_cache_battery_failed_even_after_applying_the_latest_firmware
      In E-Series AutoSupport bundle (MAJOR-EVENT-LOG) or system events, a Controller cache battery failed with: 730f Incomplete battery learn cycle - Shelf XX, Controller X, Bay X - 32C, 7.44V, 8850mAH 210...In E-Series AutoSupport bundle (MAJOR-EVENT-LOG) or system events, a Controller cache battery failed with: 730f Incomplete battery learn cycle - Shelf XX, Controller X, Bay X - 32C, 7.44V, 8850mAH 210a Controller cache not enabled or was internally disabled - Shelf XX, Bay X - Event: BAD BBU,Controller not Optimal,Battery Unusable-0 210c Controller cache battery failed - Shelf XX, Controller X, Bay X - 32C, 7.42V, 8850mAH <--CRITICAL