Which two errors would fail a pre-upgrade health check? (Choose two.)
A. Hot spares are in use
B. Volumes are reported on a non-preferred path
C. An excess number of event log events are present
D. I/O is being processed
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AC
Health check
A health check runs as part of the upgrade process, but you can also run a health check separately before you begin (go to Upgrade Center > Pre-Upgrade Health Check). The health check assesses all storage system components to make sure that the upgrade can proceed. The following conditions might prevent the upgrade:
Failed assigned drives
Hot spares in use
Incomplete volume groups
Exclusive operations running
Missing volumes
Controller in Non-optimal status
Excess number of event log events
Configuration database validation failure
Drives with old versions of DACstore
https://kb.netapp.com/Advice_and_Troubleshooting/Data_Storage_Systems/E-Series_Storage_Array/How_To_Upgrade_E-Series_Controller_Firmware%2C_NVSRAM%2C_and_IOM_Firmware_Using_SANtricity_System_Manager_(SAM)