My Oracle Support Banner

ZS4-4 CPU faults - replacement may not be required -> BIOS Issue (Doc ID 2044717.1)

Last updated on MARCH 23, 2021

Applies to:

Oracle ZFS Storage ZS4-4 - Version All Versions and later
7000 Appliance OS (Fishworks)


There have been several reported incidents of CPU faults reported on the ZS4-4 Storage Appliance.


These appear to be transient errors and can be cleared BUT may re-appear on reboot.

These do not actually appear to be CPU hardware issues (CPU replacement is generally NOT required), but are a result of a 'downrev' BIOS issue.


This issue may manifest itself as an 'unexpected' reboot of the system.

The CPU 'fault' may be shown as a faulty component and various associated FMA/alerts/faults displayed in the logs, including :

Example: CPU shown as 'faulted' in the BUI 'maintenance hardware' view






To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

In this Document

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.