First of all, thanks for your valuable feedback.
regarding the KB, before your reply my understanding was different: in case we present some drives to vSAN as Passthrough & some as RAID0 only then it is not supported with vSAN...because whole KB talks about presenting drives to vSAN & vSphere taking one scenario at a time for vSAN & then same scenario of presenting discs to vSAN.
So if in
Scenario 1: we have present drives with RAID0 & some drives as RAW TO VSPHERE ---- then it is good to go with
Scenario 2: we are going to present RAID0 drives to vSAN & simultaneously present drives (from same controller) in RAW/passthrough mode as well TO VSAN...ONLY THEN IT IS NOT
SUPPORTED
MY CASE: RAID0/JBOD to vSphere & passthrough to vSAN (your point also noted & I will use all disks in Pass-through/JBOD Mode for all drives) --- in my opinion, my scenario is different.
| IO Controller Mode | Drive Assignments | vSphere supported? | vSAN supported | Caveats |
| Mixed | Some devices assigned as single drive RAID-0, some as raw (Passthru) HBA devices | Yes | No, Untested | All the devices must be assigned for vSphere usage regardless of mapping as RAID or non-RAID. Be careful not to create an imbalance in your storage as RAIDed devices may exhibit a different performance profile that Passthru/HBA ones |
Separate RAID Controllers can be used & in fact it is better to use separate controllers for vSAN & vSphere.