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    • https://kb.netapp.com/on-prem/E-Series/Hardware-KBs/E-Series_data_assurance_mismatch_reported_after_dynamic_volume_capacity_expansion
      Traditional RAID volume capacity expansion. E-Series storage array might report a combination of the below events during an expansion of a traditional RAID volume capacity. This may occur during the i...Traditional RAID volume capacity expansion. E-Series storage array might report a combination of the below events during an expansion of a traditional RAID volume capacity. This may occur during the immediate availability format of the newly expanded capacity. Event ID: 2062 Event Description: Data assurance mismatch detected - probable cause is data on drive Event Description: Unreadable sector(s) detected data loss occurred Event Description: Overflow in unreadable sector database
    • https://kb.netapp.com/on-prem/E-Series/SANtricity-OS-KBs/Potential_E_Series_performance_degradation_and_host_access_issues_in_configurations_where_tray_drawer_loss_protection_is_disabled
      The panic will result in a additional controller reset during the upgrade, but should not cause complete loss of access to E-Series storage array. After the E-Series storage array is on 11.70x release...The panic will result in a additional controller reset during the upgrade, but should not cause complete loss of access to E-Series storage array. After the E-Series storage array is on 11.70x release, there will be signs of inter-controller communication delays in the E-Series debug queue logs (trace-buffers.7z). After the E-Series storage array is on 11.70x release, there will be signs of high volume level latency which can be found in the E-Series debug queue logs (trace-buffers.7z).
    • https://kb.netapp.com/on-prem/E-Series/SANtricity-OS-KBs/How_to_downgrade_E-Series_SANtricity_OS_from_11.70.x_to_11.60.x
      Applies to E2800 E5700 SANtricity OS 11.70.x Description Attempting to downgrade the SANtrcicity OS Software to version 11.60.x using the System Manager result in the following error: