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"SinglePathToDiskShelf_Alert "and "DISK REDUNDANCY FAILED" Autosupports are triggered

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Applies to

  • ONTAP 9
  • SAS HBA
  • Multi-Path

Issue

  • EMS reports "DISK REDUNDANCY FAILED"

Mon Oct 17 19:16:56 +0800 [Nodename: dsa_disc: callhome.dsk.redun.fault:error]: Call home for DISK REDUNDANCY FAILED

Mon Oct 17 19:16:56 +0800 [Nodename: dsa_disc: ses.multipath.ReqError:alert]: SAS disk shelf detected without a multipath configuration.

  • EMS reports "SinglePathToDiskShelf_Alert"

Tue Oct 11 23:31:23 +0800 [Nodename: mgwd: callhome.hm.alert.major:alert]: Call home for Health Monitor process nchm: SinglePathToDiskShelf_Alert[159491309057xxxxxxxx].

  • SYSTEM-HEALTH-ALERT.XML reports the following alert:

Controller Nodename has only a single-path configuration to disk shelf 18.10. This might occur when the controller does not have dual-path configuration to stack 18, a SAS HBA port on the controller connected to the disk shelf is disabled, or shelf-to-shelf cabling is incorrect.

  • system health subsystem show may report degraded status:
    ::> system health subsystem show
    Subsystem         Health
    ----------------- ------------------
    SAS-connect degraded
    Environment       ok
    Memory            ok

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