SuperCluster: How To Remediate Performance Degradation Due To NFS Load On The ZFSSA (Doc ID 2228639.1)

Last updated on AUGUST 18, 2017

Applies to:

Oracle SuperCluster Specific Software - Version 1.x to 2.x [Release 1.0 to 2.0]
Oracle SuperCluster M7 Hardware - Version All Versions to All Versions [Release All Releases]
Oracle SuperCluster M6-32 Hardware - Version All Versions to All Versions [Release All Releases]
Oracle SuperCluster T5-8 Hardware - Version All Versions to All Versions [Release All Releases]
SPARC SuperCluster T4-4 - Version All Versions to All Versions [Release All Releases]
Oracle Solaris on SPARC (64-bit)

Goal

On SuperCluster Solaris Zones and IO Domains are installed on iSCSI LUNs exported by the internal ZFS Storage Appliance (ZFSSA). On SuperCluster M7, Dedicated and Root Domains are also installed on such LUNs.

A SuperCluster configured with many IO Domains and Solaris Zones - especially an M7 SuperCluster - can become sensitive to iSCSI performance: an additional load on the ZFSSA - such as some NFS traffic generated by backup activities - can have a negatively impact on the iSCSI latency and on the overall performance.

In such a case Solaris Crossbow flows can be put in place to control the NFS load on the ZFSSA.

Solution

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