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BYPASSED disk and ENCLOSURE BYPASSED - Resolution Guide

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Applies to

  • ONTAP 9
  • AFF systems
  • ASA systems
  • FAS systems
  • SAS disk shelves 

Description

This guide identifies the likely cause from the evidence, then sends you to the matching solution article.

A disk bay reports BYPASSED or ENCLOSURE BYPASSED when a shelf module stops presenting the drive on one or both SAS paths.

  • The same status can come from different causes:
    • a failed or poorly seated disk
    • a bay or drawer fault
    • an IOM or SAS-path problem
    • a node-specific discovery state
    • less often a firmware or ONTAP issue
How to identify the error
  1. Collect the following on both nodes, then use the table. A bypass status is evidence, not proof of the failed FRU.

::> system node run -node <node> -command storage show fault -v
::> system node run -node <node> -command sysconfig -a
::> event log show -event *bypass*|*phy.rateunkwn*|*drivephy*

Example:

::> system node run -node <node> -command storage show fault -v

Enclosure Status: critical
Channel: 1a
Shelf: 2
Shelf Type: DS460-12
Module Type: IOM12B

Disk Elements:
Element Status                  Status Bytes  Status Descriptions
 51 [Bay  3]: OK                01,03,00,00
 52 [Bay  4]: CRITICAL          02,04,00,0C   BYPASSED B, BYPASSED A
 53 [Bay  5]: OK                01,05,00,00

::> storage shelf show


                                                       Module
       Shelf Name Shelf ID Serial Number   Model       Type   Status
----------------- -------- -------------------------- ------ -----------       1.10       10 ABCDE12345678       DS460-12    IOM12B Critical

  1. Note the following, then use the table below:
    1. Scope — one bay vs several bays vs the whole shelf
    2. Path — BYPASSED A only, BYPASSED B only, or both
    3. Visibility — whether the disk still appears in sysconfig -a / storage disk show
    4. Node comparison — both nodes see the same fault, or only one node
    5. Shelf type — DS460C (DS460-12) or another SAS shelf
    6. Recent change — disk replace, IOM reseat, shelf firmware, or ONTAP upgrade

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