NetApp-Harvest(Per second latency stats for volume)

[midnight mountain]

We have a requirement from a Banking customer in APAC to have the volume latency & ops stats per second.

They want to get the data for few critical volumes only(Not all volumes in the system)

The data retention is required for 24 hours , post which it can be rolled over to the next day.

The application is quite latency sensitive and they would experience latency which lasts for few seconds and hence they would like to have a mechanism to view the granular level latency from Storage end.

We would like to understand the feasibility of getting this configured and the space requirement for the same.

Also would like to understand , if this would have any repercussion on the system due to excessive data polling (like high CPU utilization due to Host_OS etc.)

[pulsar socket]

hi @midnight mountain do you know what ONTAP versions your customer has? I ask because Harvest can make a filtered REST request for a set of critical resources, but the ZAPI collector currently does not support that. The filtering REST support requires ONTAP versions 9.9+ It might work in earlier versions of ONTAP but we would need to check.
Space requirements are outlined in the FAQ https://github.com/NetApp/harvest/wiki/FAQ#sizing
In terms of excessive data polling, querying a few volumes is unlikely to be noticed

[midnight mountain]

Hi @pulsar socket , thank you for the quick response on this. This customer is on 9.5P6. Would be able to check if we can make the REST work at that version. If not then we might have to ask them to upgrade to 9.9+.

[pulsar socket]

Hey @midnight mountain REST is not available at 9.5, a more recent version of ONTAP would be required to work with REST