On Mon, Apr 26, 2021 at 4:30 PM penguin pages <jeremey.wise@gmail.com> wrote:

It was on a support ticket / call I was having.  I googled around and the only article I found was the one about features being removed.. But not sure if this effects oVirt / HCI.

My ticket was about trying to deploy OCP on a full SSD cluster of three nodes and disk performance over 10Gb will too slow and RH support was " We don't support use of gluster for OCP.. and need you to move off gluster for CEPH.

So I opened another ticket about CEPH on HCI .. and was told "not supported.. CEPH nodes must be external"  So my three server small work office and demo stack, now is rethinking having to go to anther stack / vendor such as VMWare and vSAN, just because I can't get a stack that meets needs for small HCI stack with Linux.
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Remaining in enterprise and products/solutions supported by Red Hat, here there are two different use cases for Red Hat Hyperconverged infrastructure, see:
https://access.redhat.com/products/red-hat-hyperconverged-infrastructure

1) Red Hat Hyperconverged Infrastructure for Cloud
that is for Openstack and in that case Ceph (RHCS) is the only storage solution supported.

2) Red Hat Hyperconverged Infrastructure for Virtualization
that is for RHV and in that case Gluster (RHGS) is the only storage solution supported

Then there is the use case of OCP where you want to use persistent storage, and again the only supported solution is Ceph (RHCS).
See
https://docs.openshift.com/container-platform/4.7/storage/persistent_storage/persistent-storage-ocs.html
https://access.redhat.com/articles/4731161

HIH clarifying,
Gianluca