akosiaris@backup1001:~$ sudo megacli -adpcount Controller Count: 1. Exit Code: 0x01 akosiaris@backup1001:~$ sudo megacli -PDList -aALL Adapter #0 Exit Code: 0x00
So for some reason the adapter can't see the disk shelf's drives.
For a comparison, the same exactly hardware in codfw outputs
akosiaris@backup2001:~$ sudo megacli -PDList -aALL Adapter #0 Enclosure Device ID: 65 Slot Number: 0 Drive's position: DiskGroup: 0, Span: 0, Arm: 0 Enclosure position: N/A Device Id: 4 WWN: 50000398981BA724 Sequence Number: 2 Media Error Count: 0 Other Error Count: 0 Predictive Failure Count: 0 Last Predictive Failure Event Seq Number: 0 PD Type: SAS Raw Size: 5.458 TB [0x2baa0f4b0 Sectors] Non Coerced Size: 5.457 TB [0x2ba90f4b0 Sectors] Coerced Size: 5.457 TB [0x2ba900000 Sectors] <And a lot more removed for brevity>