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    • Unable see the boot lun for a new host hosted on Cisco UCS
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/Unable_see_the_boot_lun_for_a_new_host_hosted_on_Cisco_UCS
      Applies to Cisco UCS Issue Newly configured blade on Cisco UCS is unable to see its bootlun.
    • UCS blades disconnecting from storage adapter
      https://kb.netapp.com/on-prem/solidfire/Element_OS_Kbs/UCS_blades_disconnecting_from_storage_adapter
      During operations the following errors are seen from the UCS blade Ics106028169 login: [1B815.Z3Y976] blk_update_request : I/O error, dev dm-0, sector 46369000 [10815.240477] blk_update_request : I/O ...During operations the following errors are seen from the UCS blade Ics106028169 login: [1B815.Z3Y976] blk_update_request : I/O error, dev dm-0, sector 46369000 [10815.240477] blk_update_request : I/O error, dev dm-0, sector 46369000 [10843.248168] blk_update_request : I/O error, dev dm-0, sector 0 [10843.249679] XFS (dm-5): metadata I/O error: block 0x804b40 ("xlog_iodone") error 5 numblks 64 When rebooting the UCS blade, the following error appeared in POST and did not boot further
    • UCS blade cannot boot from SAN(iSCSI)
      https://kb.netapp.com/hybrid/FlexPod/UCS_blade_cannot_boot_from_SAN_iSCSI
      Applies to FlexPod iSCSI SAN boot Cisco UCS VXLAN fabric Issue Cisco UCS blade unable to boot from SAN (iSCSI environment) Error: Unable to match boot policy to currently available devices ARP request...Applies to FlexPod iSCSI SAN boot Cisco UCS VXLAN fabric Issue Cisco UCS blade unable to boot from SAN (iSCSI environment) Error: Unable to match boot policy to currently available devices ARP requests lost between server and storage in the direction of the storage. If ARP is configured manually on the host, unicast works without issues.
    • Cisco UCS shows initialize error 1 when attempting to create iSCSI sessions to ONTAP
      https://kb.netapp.com/on-prem/ontap/da/SAN/SAN-KBs/Cisco_UCS_shows_initialize_error_1_when_attempting_to_create_iSCSI_sessions_to_ONTAP
      Applies to Cisco UCS CHAP ONTAP 9.X Issue When attempting to setup a new LUN for VMware the Cisco UCS displays Initialize error 1 on boot event log show command or EMS log review provides iSCSI Authen...Applies to Cisco UCS CHAP ONTAP 9.X Issue When attempting to setup a new LUN for VMware the Cisco UCS displays Initialize error 1 on boot event log show command or EMS log review provides iSCSI Authentication failures for the specific IQN: [Netapp01: iswt_admin_thread: iscsi.warning:notice]: ISCSI: Authentication failed for initiator iqn.1992-08.com.cisco:HOST
    • Cisco UCS host is unable to boot from FC LUN
      https://kb.netapp.com/on-prem/ontap/da/SAN/SAN-KBs/Cisco_UCS_host_is_unable_to_boot_from_FC_LUN
      Applies to OnTap 9 Cisco UCS Platforms Issue During a NetApp node migration, a UCS host is unable to boot from an FC LUN.