topic Re: SAS Viya LTS 2024.09 CAS Disk Cache - block or filesystem storageclass? in Administration and Deployment

SAS Viya LTS 2024.09 CAS Disk Cache - block or filesystem storageclass?

EyalGonen — Thu, 29 May 2025 08:04:20 GMT

Hi experts,

SAS Viya LTS 2024.09 on OCP.

When setting up CAS Disk Cache according to https://go.documentation.sas.com/doc/en/itopscdc/v_064/dplyml0phy0dkr/n08u2yg8tdkb4jn18u8zsi6yfv3d.htm?fromDefault=#p0wtwirnp4uayln19psyon1rkkr9 does the storage need to be BLOCK based or FILESYSTEM based (there is an option to choose between the two when creating the PVC)? Does it matter to SAS Viya?

I think it needs a FILESYSTEM type as there is a note on that page that says " Make sure the volume is formatted with an xfs or ext4 file system and is mounted by the VM."

Is this a correct understanding?

Re: SAS Viya LTS 2024.09 CAS Disk Cache - block or filesystem storageclass?

gwootton — Fri, 30 May 2025 15:57:42 GMT

The FILESYSTEM volume mode would be appropriate, Viya doesn't use a raw block device for CAS disk cache.

Re: SAS Viya LTS 2024.09 CAS Disk Cache - block or filesystem storageclass?

EyalGonen — Tue, 03 Jun 2025 08:02:29 GMT

Can I safely assume that FILESYSTEM type PV is also the one which should be used for SAS WORK in the Compute Server?

Re: SAS Viya LTS 2024.09 CAS Disk Cache - block or filesystem storageclass?

gwootton — Wed, 04 Jun 2025 13:13:45 GMT

Yes, the same is true of WORK.