Proxmox Need to add HPE MSA storage through SAN switch

Are you using Fibre Channel or iSCSI to connect the HPE MSA storage?
Also, can the Proxmox host detect the LUN at the operating system level?

Please provide the output of the following commands:

lsblk
lsscsi -t
multipath -ll
 
If possible, please share the command output as text rather than screenshots. Please redact any sensitive information before posting.
 
Troubleshooting order:

1. Did you map your luns to your PVE HBA WWN?
2. does your HBA see the LUN during boot?
3. Whats the make and model of your HBA? are you using the default drivers that shipped with debian, or did you install a outside driver?