The 12gb SAS HBA registers primary and secondary failover LUNS. It has (2) SAS circuits to the Storage Provider.
Post the update to 7.0U3c, only half of the LUNs showed up (some were primary some were secondary). The LUNS that are registered as secondary, no longer mount.
Storage Center systems with Front End SAS connectivity have been officially tested and supported to work with ESXi version 6.7 . If you encounter issues with ESXi 6.5 and SCOS 7.2 / 7.3, then the best practice setting is to modify the module parameters for all versions of the lsi-msgpt3 / lsi-msgpt35 SAS driver.
Follow the below steps:
1. List out the module parameter values (take lsi_msgpt3 driver for example)
esxcli system module parameters list -m lsi_msgpt3
2. Modify the issue_scsi_cmd_to_bringup_drive module parameter.
esxcli system module parameters set -p issue_scsi_cmd_to_bringup_drive=0 -m lsi_msgpt3
3. Validate that the module parameter value has been modified with the list command in Step 1.
4. Reboot the ESXi host for the changed value to take effect.