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High Latency and SCSI Aborts while accessing SAN LUNs on ESXi

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Category:
ontap-9
Specialty:
san
Last Updated:

Applies to

  • ONTAP 9
  • VMware vSphere
  • ESXi Server
  • SCSI
  • Fiber Channel (FC)

Issue

  • High latency observed in VMware Environment
  • SCSI aborts and path failures reported on ESXi side
  • EMS logs show multiple adapter failures for the same port
STIO Adapter:1c IO WQE failure, Handle 0x6, Type 8, S_ID: 1xxx7, VPI: 8, OX_ID: xxxB, Status 0x3 Ext_Status 0x1d
STIO Adapter:1c IO WQE failure, Handle 0x6, Type 8, S_ID: 1xxx6, VPI: 8, OX_ID: xxxD, Status 0x3 Ext_Status 0x2
  • SFP and Cable were replaced but issue persists

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