Provisioning persistant volume for SAS Viya4 on openshift cluster

[thesasuser]

Hello
I was looking at the deployment process by manual deployment of SAS Viya4 on open shift cluster. 
Taking the procedure in the SAS Viya Deployment subscription in respect of install on OpenShift as the basis, I don't see anything on provisioning persistent volume.
The raises a question does install on OpenShift automatically provisions the persistent volume   OR do we need to add references to the transformer section in the kustomization.yaml file?
I could not find much in the SAS Viya Platform: Deployment Guide 

and also at SAS Help Center: Sizing Recommendations.
Wondering if somebody can guide on this and point to the appropriate resources.
Thanks.

[thesasuser]

Hello
I think I got the answer here  SAS Help Center: Optional Customizations
Please let me know if there is something more to it.
Thanks

[gwootton · Accepted solution]

When you deploy Viya it creates a number of PersistentVolumeClaims using the default storage class, unless you override that storage class, for things like the database and configuration server. The storage class has an associated provisioner which is responsible for creating the persistent volume in response to the creation of a claim.
You could similarly create your own PersistentVolumeClaim to house data, user home directories, drivers, etc. The optional customization you've linked is an example of how to mount one of those additional PVCs into the CAS server (you might also want to mount them into the compute server).