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Expanding Cluster: Adding AFF A250 nodes to existing cluster reports HA interconnect errors and cannot perform takeover

Last Updated:

Applies to

  • ONTAP 9
  • Expanding cluster
  • AFF A250, AFF C250, FAS500f
  • BES-53248 Switch RCF 1.0.4
  • Cisco Nexus cluster switches - RCF 1.0, 1.1


  • Attempting to add 2 new nodes to an existing cluster
  • Although the nodes can join the cluster successfully, the storage failover show output shows NVRAM log not synchronized, cannot reach partner over HA interconnect.
::> storage failover show
Node           Partner        Possible State
-------------- -------------- -------- -------------------------------------
cluster1-01        cluster1-02        true     Connected to cluster1-02
cluster1-02        cluster1-01        true     Connected to cluster1-01
cluster1-03        cluster1-04        true     Connectedto cluster1-04
cluster1-04        cluster1-03        true     Connected to cluster1-03
cluster1-05        cluster1-06        false    Waiting for cluster1-06,
                                               Takeover is not
                                               possible: Storage failover
                                               interconnect error, NVRAM log not
                                               synchronized, Disk inventory not exchanged
cluster1-06        cluster1-05        false    Waiting for cluster1-05, Takeover is not
                                               possible: Storage failover
                                               interconnect error, NVRAM log not
                                               synchronized, Disk inventory not exchanged
6 entries were displayed.
cluster1::> system node show
Node      Health Eligibility Uptime        Model       Owner    Location  
--------- ------ -----------
------------- ----------- -------- ---------------
cluster1-01   true   true        11 days 09:19 AFF-C190 
cluster1-02   true   true        11 days 09:39 AFF-C190
cluster1-03   true   true        11 days 08:42 FAS2750
cluster1-04   true   true        11 days 09:00 FAS2750
cluster1-05   true   true         1 days 04:08 AFF-A250
cluster1-06   true   true         1 days 04:03 AFF-A250
6 entries were displayed. 
  • Rebooting a AFF A250, AFF C250 or FAS500f node in this state will result in hang on boot with error:

Waiting for reservations to clear


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