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PHY reports Rate unknown on SAS adapter

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Category:
fas-systems
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hw
Last Updated:

Applies to

  • ONTAP 9
  • FAS systems
  • AFF systems

Issue

  • PHY reports Rate unknown on SAS adapter:

slot 0: SAS Host Adapter 0a (PMC-Sierra PM8072 rev. C, SAS, <UP>)
            Firmware rev:       03.08.09.00
            Base WWN:           5:00a098:003b627:a0
            Phy State:          [12] Enabled, Rate unknown
                                [13] Enabled, 12.0 Gb/s
                                [14] Enabled, 12.0 Gb/s
                                [15] Enabled, 12.0 Gb/s
            Mini-SAS HD Vendor:        MOLEX

slot 0: SAS Host Adapter 0b (PMC-Sierra PM8072 rev. C, SAS, <UP>)
Firmware rev:       03.08.09.00
Base WWN:           5:00a098:003b3f3:74
Phy State:          [8] Enabled, 12.0 Gb/s
                    [9] Enabled, 12.0 Gb/s
                    [10] Disabled
                    [11] Disabled
           Mini-SAS HD Vendor:        MOLEX

  • SAS-EXPANDER-PHY-STATE log shows Rate unknown.

SAS-EXPANDER-PHY-STATE
Expander phy state on 0b.10 (NETAPP  :DS22412IOM12A    SHFNC2024000199):
                              Pwr         Invald Disprt Loss   Phy    CRC    Phy
                          Pwr Ccl Rsv Rls DWord  Error  Sync   Reset  Error  Change SATA
PHY/BAY STATE           ON  Cnt Cnt Cnt Count  Count  Count  Prob   Cnt    Cnt    Affiliation
------- ----------------- --- --- --- --- ------ ------ ------ ------ ------ ------ ----------------
 0/P0:0 12.0 Gb/s         --- --- --- --- 0      0      0      0      0     3      ----------------
 1/P0:1 12.0 Gb/s         --- --- --- --- 0      0      0      0      0      3      ----------------
 2/P0:2 12.0 Gb/s         --- --- --- --- 0      0      0      0      0      3      ----------------
 3/P0:3 12.0 Gb/s         --- --- --- --- 0      0      0      0      0      3      ----------------
 8/P2:0 Rate unknown    
 9/P2:1 Rate unknown 

  • SAS-ADAPTER-STATE log shows degraded.

SAS-ADAPTER-STATE
State for adapter channel 0b: UP (degraded)
Invald Disprt Loss   Phy    Phy    
DWord  Error  Sync   Reset Change 
PHY STATE             Count  Count  Count  Prob   Count  
-------------------------------------------------------- 
8 12.0 Gb/s         0      0      0      0      11    
9 12.0 Gb/s         0      0      0      0      11    
10 Disabled          0      0      0      0      12    
11 Disabled          0      0      0      0      12

  • EMS log:

[sas.cable.degraded:error]: Cable attached to SAS port "1d" is functioning in a degraded mode.

 

 

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