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How to tune memory settings of OTV/VSC for scale and performance 9.12 and above

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Applies to

ONTAP Tools for VMware vSphere (OTV) 9.12 and later

Description

Tuning Memory Settings: 
  • The virtual appliance for Virtual Storage Console (VSC), VASA Provider (VP), and Storage Replication Adapter (SRA) runs in a VM (OVA) and uses Java for many of its processes.
  • In large scale environments, performance may be improved by increasing Java heap memory settings.
  • In certain cases, NetApp Support may recommend adjusting these settings for other customers as well. Insufficient memory for a specific process can impact user interface and other application task performance. 
  • This article is targeted to 9.12 and later releases which add more granularity for Java heap memory settings for large scale environments.
What is Large Scale?
  • NetApp Engineering suggests these thresholds as indicators of large scale environments that may benefit from these adjustments.
  • Number of vSphere/ESXi hosts: 25 or more
  • Number of datastores: 50 or more
  • Number of LUNs (both traditional datastore LUNs as well as VVol Protocol Endpoint LUNs*): 100 or more
  • Number of NFS mounts (FlexVol Volumes): 100 or more
* There will be one PE LUN for each FlexVol volume that is a VVol datastore.

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