SAS Host Adapter with rate unknown for one PHY (remote shelf)

Applies to

• Ontap 9.6P7
• DS2246
• SAS cable X66016A-R6
• FAS8020
• Patch panel configuration.

Issue

• One SAS channel (PHY) has unknown status for remote shelf stack. Example:

slot 0: SAS Host Adapter 0b (PMC-Sierra PM8001 rev. C, SAS, <UP>)
		Firmware rev:       01.12.09.00
		Base WWN:           xxxxxxxxxxxxxxx
		Phy State:          [4] Enabled, 6.0 Gb/s
		                    [5] Enabled, 6.0 Gb/s
		                    [6] Enabled, Rate unknown
		                    [7] Enabled, 6.0 Gb/s
		QSFP Vendor:        Molex Inc.      
		QSFP Part Number:   112-00274+A0    
		QSFP Type:          Optical (1490nm DFB) 5m ID:00
		QSFP Serial Number: serial_number