Skip to main content
NetApp Knowledgebase

Shelf module fault error due to "Reference Clock Failure"

Views:
286
Visibility:
Public
Votes:
0
Category:
disk-shelves
Specialty:
hw
Last Updated:

Applies to

Product Model: FAS and AFF systems

OS: ONTAP

Shelf: DSXXXX

Issue

Shelf IOM hardware fault due to: reference clock failure.

Example:
EMS Event Log:
Wed Apr 20 21:56:35 EDT [Netapp-08: dsa_worker2: ses.status.ModuleError:critical]: DS4486 (S/N SHABC1234000789) shelf 2 on channel 0a SAS expander error for SAS shelf electronics 1: critical status; Reference Clock Failure. This module is on the rear of the shelf at the top center, on shelf module A.
Wed Apr 20 21:56:44 EDT [Netapp-08: statd: monitor.shelf.fault:critical]: Fault reported on disk storage shelf attached to channel 0a. Check fans, power supplies, disks, and temperature sensors.


Also, you might notice all the disks on the shelf showing DIS/CLK under storage-expander within the ASUP.
DIS/CLK = PHY is disabled due to an expander reference clock error.

 

CUSTOMER EXCLUSIVE CONTENT

Registered NetApp customers get unlimited access to our dynamic Knowledge Base.

New authoritative content is published and updated each day by our team of experts.

Current Customer or Partner?

Sign In for unlimited access

New to NetApp?

Learn more about our award-winning Support