Skip to main content

NetApp_Insight_2020.png 

NetApp Knowledgebase

What is the NFSv3 mount "noac" option?

Views:
92
Visibility:
Public
Votes:
0
Category:
ontap-9
Specialty:
nfs
Last Updated:

Applies to

ONTAP 9

Answer

The noac option is a client side option available that disables attribute caching.  This option is disabled by default.  Unless there's a very specific reason to enable the noac option, NetApp Technical Support does not recommend enabling this option.  The NFS attribute cache is a local cache of file and directory permissions.  By disabling this cache, a new lookup has to occur each time to validate file and directory permissions.  Expect an increase in IO operations and a decrease in performance if this option is enabled.

Additional Information

additionalInformation_text

 

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