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Duplicate IQNs upgrading from UCS 2.0(1m) to 2.0(5a)

m.yost
Level 1
Level 1

We are looking at upgrading our UCS system from 2.0(1m) to 2.0(5a).  We have ESXi hosts that are currently doing iSCSI boot and as such, we have iSCSI vNICs attaching to LUNs on a SAN.  We ran the duplicate IQN script and it came back with 4 entries:

Count           InitiatorName                                                                                                    Dn

-----                     -------------                                                   --

2                     iqn.1987-05.com.cisco:esxiops01                       {org-root/org-Production/ls-esxiops01/iscsi-iSCSI_Host_A, org-root/org-Production/ls-esxiops01/iscsi-iSCSI_Host_B}

2                     iqn.1987-05.com.cisco:esxiops02                     {org-root/org-Production/ls-esxiops02/iscsi-iSCSI_Host_A, org-root/org-Production/ls-esxiops02/iscsi-iSCSI_Host_B}

2                     iqn.1987-05.com.cisco:esxiops03                              {org-root/org-Production/ls-esxiops03/iscsi-iSCSI_Host_A, org-root/org-Production/ls-esxiops03/iscsi-iSCSI_Host_B}

2                     iqn.1987-05.com.cisco:esxiops04               {org-root/org-Production/ls-esxiops04/iscsi-iSCSI_Host_A, org-root/org-Production/ls-esxiops04/iscsi-iSCSI_Host_B}

Each of the 4 entries corresponds to a different blade in the chassis, but the redundant entries are for the same blades except different Fabrics.  My question is whether or not it's OK for the IQN to be the same on different fabrics.  If it was two different blades with the same IQN, I could see where that might be bad, but it's the same blade, just different Fabrics which are in an HA pair.

1 Reply 1

gkumark
Cisco Employee
Cisco Employee

As long as they are for the same host, it should be fine. Make sure that the LUN allocation/masking is done correctly on both the fabrics.

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